Android Studios, Update on time - Android Studio

Hey, I'm fairly new to using android studios and I am trying to make an app that updates its display every few seconds.
The method I am currently using is to update when a button is pressed using the following:
public void Refreshing(View view) {
// do stuff here...
}
Where Refreshing is the onClick of a button I placed.
How can I use a similar format but instead of doing things on a button press just have it done automatically after a few seconds?

You can use a android.os.Handler for that. It allows you to interact with the event loop and post a Runnable that will be executed after a given delay
In your Activity's onCreate() method:
Code:
final int delayMs = 1000;
final Handler handler = new Handler(this);
final Runnable runnable = new Runnable() {
@Override public void run() {
// Call your refresh method
Refreshing();
// Restart the timer
handler.postDelayed(runnable, delayMs);
};
}
handler.postDelayed(runnable, delayMs);

Thanks, this is exactly what I'm looking for. I add the code to the onCreate but I had an semicolon error. So I added another semicolon but its having trouble with a few other parts. Here is what I have.
Code:
final int delayMs = 1000;
final Handler handler = new Handler([B]this[/B]);
final Runnable runnable = new Runnable() {
@Override public void run() {
// Call your refresh method
Refreshing();
// Restart the timer
handler.postDelayed([B]runnable[/B], delayMs);
};
};
handler.postDelayed(runnable, delayMs);
The error listed is:
Error : (134, 33) error: no suitable constructor found for Handler(MainActivity)
constructor Handler.Handler(Looper,Callback) is not applicable
(actual and formal argument lists differ in length)
constructor Handler.Handler(Looper) is not applicable
(actual argument MainActivity cannot be converted to Looper by method invocation conversion)
constructor Handler.Handler(Callback) is not applicable
(actual argument MainActivity cannot be converted to Callback by method invocation conversion)
constructor Handler.Handler() is not applicable
(actual and formal argument lists differ in length)
The words I bolded are underlined in red in Android Studios.
this ----------------has a constructor error
runnable ----------has a initialization error
I tried troubleshooting for a little bit and took out the this and the only error left is with runnable. It says: Error: (141, 37) error: variable runnable might not have been initialized

Yep, I wrote the code without testing it. It might need some adaptation.
Here is a version that should work:
Code:
final int delayMs = 1000;
final Handler handler = new Handler([B]this[/B]);
final Runnable runnable = new Runnable() {
@Override public void run() {
// Call your refresh method
Refreshing();
// Restart the timer
handler.postDelayed([B]this[/B], delayMs);
};
};
handler.postDelayed([B]runnable[/B], delayMs);

Thank you so much, it worked. I just had to change
Code:
final Handler handler = new Handler(this);
to
Code:
final Handler handler = new Handler();

Related

[Q] Dev - How to launch an app from another one

Hi there,
I'm working on my LeoParts and integrated ROM Updater in my ROM.
Now I want my LeoParts to launch ROM Updater on a PreferenceScreen.
I tried two things:
1. With the XML
Code:
<PreferenceScreen
android:key="rom_update"
android:title="@string/updates_title"
android:summary="@string/updates_summary">
<intent android:action="android.intent.action.MAIN"
android:targetPackage="org.elegosproject.romupdater"
android:targetClass="org.elegosproject.romupdater.VersionsList"/>
</PreferenceScreen>
2. With the Java code
Code:
Intent intent = new Intent(Intent.ACTION_MAIN);
intent.setClassName("org.elegosproject.romupdater", "org.elegosproject.romupdater.VersionsList");
startActivity(intent);
3. From the shell
Code:
am start -a android.intent.action.MAIN -n org.elegosproject.romupdater/.VersionsList
This last one works, but I would like something less hacky...
Here is the error I get from a logcat:
Code:
java.lang.SecurityException: Permission Denial: starting Intent { act=android.intent.action.MAIN cmp=org.elegosproject.romupdater/.VersionsList } from ProcessRecord{407e1ed8 775:com.leonnib4.leo_parts/10044} (pid=775, uid=10044) requires null
I know this as something to do with permissions, most likely in the AndroidManifest.xml, but I can't get it to work.
Please help me out
Thx
I got arround by doing:
Code:
Intent intent = getPackageManager().getLaunchIntentForPackage("org.elegosproject.romupdater");
if (intent != null) {
toast.show();
String commands[] = {
"am start -a android.intent.action.MAIN -n org.elegosproject.romupdater/.VersionsList"
};
// Execute in a shell
} else {
// Toast notif "ROM Updater is missing"
}
But that is still hacky and I'm still looking for a better way to do this...
Thx

[Q] How to enable WifiAP / tethering programmatically from within app on SGS I9000?

I try to activate WifiAP (wifi tethering) via my application code. Since there is no direct API for it, it needs to be done via reflection.
Using the approach as mentioned on StackOverflow.com.
It works fine on Nexus One, HTC Desire, Huawei Ideos (all running 2.2.x), but it doesn't run on the SGS with 2.2.1.
Checking the android.net.wifi.WifiManager class via reflection, I see that Samsung has obviously modified the class and it has 57 instead of 37 methods.
Unfortunately the modified WifiManager class is not open sourced by Samsung and the error messages don't give any details or stack trace.
I am looking for somebody who can enable WifiAP activation programmatically on the SGS, eventually by modifying the underlying system, since I'm myself am an application developer, not working on system level. Also considering contract work!
There are two things I am trying:
1) activate WifiAP directly via reflection:
Code:
WifiManager wifi = (WifiManager) getSystemService(Context.WIFI_SERVICE);
Method[] wmMethods = wifi.getClass().getDeclaredMethods();
Log.d(TAG, "enableMobileAP methods " + wmMethods.length);
for(Method method: wmMethods){
Log.d(TAG, "enableMobileAP method.getName() " + method.getName());
if(method.getName().equals("setWifiApEnabled")) {
WifiConfiguration netConfig = new WifiConfiguration();
netConfig.SSID = "MyWifiAP";
netConfig.allowedAuthAlgorithms.set(WifiConfiguration.AuthAlgorithm.OPEN);
netConfig.allowedProtocols.set(WifiConfiguration.Protocol.RSN);
netConfig.allowedProtocols.set(WifiConfiguration.Protocol.WPA);
netConfig.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.NONE);
try {
Log.d(TAG, "enableMobileAP try: ");
method.invoke(wifi, netConfig, enabled);
if (netConfig.wepKeys!=null && netConfig.wepKeys.length>=1)
Log.d(TAG, "enableMobileAP key : " + netConfig.wepKeys[0]);
Log.d(TAG, "enableMobileAP enabled: ");
mIsWifiEnabled = enabled;
} catch (Exception e) {
Log.e(TAG, "enableMobileAP failed: ", e);
}
}
}
Attached are the logfiles I am getting on Nexus One (success) and SGS (failure).
The noticable part in the SGS log are maybe these lines:
Code:
D/WifiService( 2818): setWifiApEnabled: allowWifiAp: true
E/WifiService( 2818): setWifiApEnabledState 2
E/SoftapController( 2681): Softap already stopped
E/WifiService( 2818): Exception in stopAccessPoint()
E/WifiService( 2818): setWifiApEnabledState 4
D/WifiAp (23523): enableMobileAP key : null
2) another thing I try - since the modified SGS WifiManager (only that one) has a method named 'showApDialog' without any parameter taken, I try to call that method, but this also just gives an 'Error' in the log without further explanation.)
Code:
WifiManager wifi = (WifiManager) getSystemService(Context.WIFI_SERVICE);
Method[] wmMethods = wifi.getClass().getDeclaredMethods();
Log.d(TAG, "enableMobileAP methods " + wmMethods.length);
for(Method method: wmMethods){
Log.d(TAG, "enableMobileAP method.getName() " + method.getName());
if(method.getName().equals("showApDialog")) {
WifiConfiguration netConfig = new WifiConfiguration();
try {
method.invoke(wifi);
} catch (Exception e) {
Log.e("Main", "Can't open ap dialog.", e);
}
}
}
I have been able to enable an existing configuration by passing null as the WifiConfiguration parameter to the setWifiApEnabled method.
I had the same problems as you when I tried to use this function to create a new configuration. I also failed when I tried to pass the existing configuration as a parameter, after invoking getWifiApConfiguration.
I noticed in the Android source code that there is a similar function called setWifiApConfiguration, but calling wifiManager.getClass().getMethod("setWifiApConfiguration") throws NoSuchMethodException when I run it on my SGS.
I also wondered if I can use addNetwork to create a new configuration, but suspect it is only for connecting to APs, rather than creating one.
As I only wanted to toggle the existing configuration, which I have now achieved, I stopped investigating at this point.
Hope that helps,
Good luck...
Yes, I've also got it to work meanwhile but didn't update this thread. You're right, the problem were the configuration, which had to be left empty. Cheers
thank you for sharing this, it really made my day
it seems that (on Android 2.3.4) it only works if you first disable the WiFi (Nexus One).

[MOD][CM12][COLOROS 2][HYDROGENOS] Splash Screen Image Injector v1.2

This is a program that I wrote to decode the newer style "logo.bin" files used in some OPPO, and OnePlus devices. Please read below so you can better understand this type of encoding being used:
What Is A Raw Image?
A raw image, whether it be a file or an image in memory, is simply pixel data. There is no extra information like width, height, name, end of line... Absolutely nothing, just pixel data. If you have an image that is raw and the resolution is 1080x1920 and you are using a typical RGB24 or BGR24 (like the ones used here), then your exact filesize or size in memory will be 1080x1920x3! We use 3 here because there is one byte for the R or red component, one for the G (green), and one for the B(blue).
What Is A Run Length Encoded Image?
A run length image encoding uses a count ;usually a single byte (char), 2 bytes (short int), or 4 bytes (long int); and then the pixel components. So instead of writing out 300 bytes of '0's to make a line of 100 black pixels. Black is RGB(0,0,0). You could encode this as 100, 0, 0, 0. And only use 4 bytes of data to get the exact same image as the 300 byte raw image. All the run length encoding I've found, except the Motorola style which is a little different, use a run length encoding that is pixel-oriented like this.
Now I've figured out this new one and it is a byte-oriented run length encoding. This is for runs of bytes, not pixels. You may think, well whats the big deal? When you add a little area of color, you increase the run length encoded image in you logo.bin immensely! You use 6 bytes per pixel if there aren't any runs of color data. If you had an image that was a 1080x1920 black image with a 25 pixel wide, by 25 pixel high red box in the middle. The encoder would be doing runs of black data efficiently until it reached the red area.
.....0 255 0 255 0 255 0 255 0 255 0 133 /// we've reached the top left corner of the red square /// 13 1 30 1 255 1 // << that was just one red pixel!! in bgr color order (13, 30, 255) <<// And it keeps going through the rest of the red pixels on that line using 6 bytes per pixel, which is the opposite of compression. Before reaching the red square the encoding was decoding to 255 zeros over and over, until finally 133 zeros. 255 zeros is 85 black pixels stored in just 2 bytes!
This type of encoding is only good for grey scale images. It is not good with color, but it still will handle color of course. In grey scale, the Red, Blue, and Green data components are always the same values. All the way from black (0,0,0) to white (255, 255, 255); including every shade of grey in between>>>(1,1,1) (2,2,2) (3,3,3)....(243, 243, 243) (244, 244, 244)<<<
One other difference in this method of run length encoding is that the color byte is before the count, which is backwards from all of the other methods.​
The attachment contains the C source code (which is also in the 2nd post) and the executable that was compiled using mingw32 on a 64 bit Windows 7 pc. The png library that I used is LodePng, the source is in the download.
To use logoinjector:
Decode your logo.bin:
Code:
logoInjector.exe -i logo.bin -d
All the PNG 's will be extracted from logo.bin. Edit the PNGs that you want to change...
Note:
Your original "logo.bin" file is never changed, it is just read. If the file you try to load isn't a logo.bin file, or if it is the older style, then the program will tell you and exit​
Inject the image(s) back in to the logo.bin:
Code:
logoinjector.exe -i logo.bin -j image_name_1 image_name_3
To list whats in your logo file:
Code:
logoinjector.exe -i logo.bin -l
For a more detailed list:
Code:
logoinjector.exe -i logo.bin -L
If the colors are messed up use the "-s" switch while decoding.
Code:
logoinjector.exe -i logo.bin -d -s
If you had to use the "-s" switch to decode properly, you'll have to use it to inject also:
Code:
logoinjector.exe -i logo.bin -j image_name -s
Note:
With version 1.2, you can put as many names after "-j" as you want, and it's not case sensitive. You also don't have to put the whole name. If you just put "-j fhd" every image in the logo.bin that starts with "fhd" will be injected. There has to be a PNG with the name in the directory though​
The size of your modified.logo.bin will displayed along with the original size, if everything went good. Please know the size of you logo partition. I made this program to encompass any device using this format, and there is no set size of the logo partition between devices. Fastboot will just error out if you try to flash data bigger than the partition before it writes anything. But if someone gets brave and trys to "DD" to the logo partition, it could get ugly.:cyclops:
Flash the "modified.logo.bin" file through fastboot.
v1.2
made it possible for multiple injections in one command
doesn't add png to the decoded png if it was already in the name
fixed out of scope with image 26 in OPPO find 7 logo.bin
added LodePng source in the download
made the default color order BGR
displays the modified logo file size as well as the original file size
runs the modified.logo.bin back through the list function after injecting
checks the number of offsets between the original and modified logo.bin
Use this at your own risk.
Always make backups.
Always.
Code:
/*
/*
* Logo Injector v1.2
*
* Copyright (C) 2015 Joseph Andrew Fornecker
* makers_mark @ xda-developers.com
* [email protected]
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 3 of the License, or (at your
* opinion) any later version. See <http://www.gnu.org/licenses/gpl.html>
*
* New in v1.2:
*
* - Fixed out of scope crash involving image #26 in oppo find 7 logo.bin (26 IS BIG)
* - Multiple injection names possible after the -j parameter
* - Injection names are now case insensitive
* - BGR is the the default color order, instead of RGB
* - Added more error checks
* - Show the change in file size of original logo.bin compare to the modified logo.bin
* - Several small changes dealing with readability
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <stdint.h>
#include "lodepng.h"
#define SWAP32(x) (( x >> 24 )&0xff) | ((x << 8)&0xff0000) | ((x >> 8)&0xff00) | ((x << 24)&0xff000000)
#define BLOCK 512
#define OFFSETSTART 48
#define BYTESPERPIXEL 3
#define MAXOFFSETS 28
#define SIZEOFLONGINT 4
#define TWOTOTHETEN 1024
typedef struct {
uint8_t header[8];
uint8_t blank[24];
uint32_t width;
uint32_t height;
uint32_t lengthOfData;
uint32_t special;
uint32_t offsets[MAXOFFSETS];
uint8_t name[64];
uint8_t metaData[288];
} IMAGEHEAD;
uint16_t Copy(FILE *, IMAGEHEAD *, uint16_t , uint16_t, FILE *);
int32_t InjectNewStyle(FILE *, IMAGEHEAD *, uint16_t , uint8_t *, uint16_t, FILE *, uint32_t * );
int32_t RewriteHeaderZero( uint32_t , uint16_t, FILE* , int32_t, uint32_t * );
uint32_t Encode(uint8_t*, uint8_t*, uint32_t);
uint32_t GetEncodedSize(uint8_t*, uint32_t);
uint32_t GetWidth(FILE*);
uint32_t GetHeight(FILE*);
uint64_t BlockIt(uint32_t);
uint16_t GetNumberOfOffsets(FILE*);
int32_t DecodeLogoBin(FILE*, IMAGEHEAD *);
int32_t ListFileDetails(FILE*, IMAGEHEAD *);
uint8_t* Decode(FILE*, uint32_t, uint32_t, uint32_t, uint8_t*);
int32_t IsItTheNewStyle(FILE*);
IMAGEHEAD* ParseHeaders(FILE*, uint16_t);
int32_t IsItALogo(FILE*);
void PrintFileSize(uint32_t);
uint32_t GetFileSize(FILE *);
uint16_t badAss = 0;
int16_t rgb2bgr = 1;
uint16_t convertToPNG = 1;
uint8_t HEADER[] = {0x53,0x50,0x4C,0x41,0x53,0x48,0x21,0x21};
int32_t IsItALogo(FILE *originalLogoBin){
uint8_t string[9];
uint16_t i;
fread(string, 1, 8, originalLogoBin);
for (i = 0 ; i < 8 ; i++){
if (string[i] == HEADER[i]){
continue;
} else {
return 0;
}
}
return 1;
}
int32_t IsItTheNewStyle(FILE *originalLogoBin){
int32_t newStyle = 0;
fread(&newStyle, 1, SIZEOFLONGINT, originalLogoBin);
if (newStyle == 0){
return 1;
} else {
return 0;
}
}
IMAGEHEAD *ParseHeaders(FILE *originalLogoBin, uint16_t numberOfOffsets){
uint8_t i = 0;
IMAGEHEAD *imageHeaders;
imageHeaders = malloc(BLOCK * numberOfOffsets);
memset(imageHeaders, 0, BLOCK * numberOfOffsets);
fseek(originalLogoBin, 0, SEEK_SET);
fread(&imageHeaders[i], 1 , BLOCK, originalLogoBin);
for ( i = 1 ; i < numberOfOffsets ; ++i ){
fseek(originalLogoBin, imageHeaders[0].offsets[i], SEEK_SET);
fread(&imageHeaders[i], 1 , BLOCK, originalLogoBin);
}
return imageHeaders;
}
uint16_t GetNumberOfOffsets(FILE *originalLogoBin){
uint16_t i = 0;
uint32_t readAs = 0;
fseek(originalLogoBin, OFFSETSTART, SEEK_SET);
while(i < MAXOFFSETS){
fread(&readAs, 1, SIZEOFLONGINT, originalLogoBin);
if ((readAs == 0) && (i != 0)){
break;
} else {
i++;
}
}
return i;
}
uint8_t* Decode(FILE *originalLogoBin, uint32_t start, uint32_t length, uint32_t imageBytes, uint8_t* image){
uint32_t decodedBytes = 0, i = 0;
uint8_t* data;
fseek(originalLogoBin, start, SEEK_SET);
data = (uint8_t*)malloc(length);
if (fread(data, 1, length, originalLogoBin) != length) {
fprintf(stderr, "Could not read file!!\n");
exit(0);
}
while((i < length) && (decodedBytes < imageBytes)){
memset(&image[decodedBytes], data[i], (data[i + 1]));
decodedBytes += (uint8_t)data[i+1];
i += 2;
if ((i < length) && (imageBytes - decodedBytes < (uint8_t)data[i + 1])){
memset(&image[decodedBytes], data[i], imageBytes - decodedBytes);
decodedBytes = imageBytes;
fprintf(stdout, "More information was in encoding than resolution called for.\n");
break;
}
}
fprintf(stdout, "%ld decoded bytes\n", decodedBytes);
free(data);
if( rgb2bgr == 1 ){
uint8_t old;
i = 0;
while( i < imageBytes){
old = image[i];
memset(&image[i], image[i + 2], 1);
memset(&image[i + 2], old, 1);
i += BYTESPERPIXEL;
}
}
return image;
}
int32_t DecodeLogoBin(FILE *originalLogoBin, IMAGEHEAD *imageHeaders){
uint32_t size, imageBytes, start;
uint8_t* image;
uint8_t name[65];
uint8_t r = 0;
uint16_t i , numberOfOffsets = GetNumberOfOffsets(originalLogoBin);
for ( i = 0 ; i < numberOfOffsets ; i++ ){
fprintf(stdout,"\n\n\n#%d: Offset:%ld\n", i + 1, imageHeaders[0].offsets[i]);
if ((imageHeaders[i].width == 0) || (imageHeaders[i].height == 0)){
fprintf(stdout, "Placeholder for %s\n", imageHeaders[i].metaData);
continue;
}
fprintf(stdout, "Header=%s\nWidth=%ld\nHeight=%ld\nData Length=%ld\nSpecial=%ld\nName=%s\nMetadata=%s\n",
imageHeaders[i].header, imageHeaders[i].width, imageHeaders[i].height,
imageHeaders[i].lengthOfData, imageHeaders[i].special, imageHeaders[i].name, imageHeaders[i].metaData);
if (convertToPNG){
start = imageHeaders[0].offsets[i] + BLOCK;
imageBytes = imageHeaders[i].width * (imageHeaders[i].height) * BYTESPERPIXEL;
image = malloc(imageBytes);
uint8_t lengthOfName = strlen(imageHeaders[i].name);
uint8_t *ext;
ext = strrchr(imageHeaders[i].name, '.');
if (((ext[1] == 'p') || (ext[1] == 'P')) &&
((ext[2] == 'n') || (ext[2] == 'N')) &&
((ext[3] == 'g') || (ext[3] == 'G')) &&
((ext[0] == '.'))){
sprintf(name, "%s", imageHeaders[i].name);
} else {
sprintf(name, "%s.png", imageHeaders[i].name);
}
lodepng_encode24_file(name, Decode(originalLogoBin, (uint32_t)start, (uint32_t)imageHeaders[i].lengthOfData, (uint32_t)imageBytes, image) , (unsigned)imageHeaders[i].width, (unsigned)imageHeaders[i].height);
free(image);
}
}
return 0;
}
int32_t ListFileDetails(FILE *originalLogoBin, IMAGEHEAD *imageHeaders){
uint32_t i = 0, j = 0;
fseek(originalLogoBin, 0, SEEK_SET);
uint16_t numberOfOffsets = GetNumberOfOffsets(originalLogoBin);
fprintf(stdout, "Resolution\tOffset\tName\n");
fprintf(stdout, "-------------------------------------------------------------\n");
for ( i = 0 ; i < numberOfOffsets ; i++ ){
if ((imageHeaders[i].width == 0) || (imageHeaders[i].height == 0)){
fprintf(stdout, "(placeholder) for %s\n", imageHeaders[i].metaData);
continue;
}
fprintf(stdout,"%dx%d\t", imageHeaders[i].width, imageHeaders[i].height);
if ((imageHeaders[i].width < 1000) && (imageHeaders[i].height <1000)){fprintf(stdout, "\t");}
fprintf(stdout, "%ld\t%s\n", imageHeaders[0].offsets[i], imageHeaders[i].name );
}
return 1;
}
uint16_t Copy(FILE *originalLogoBin, IMAGEHEAD *imageHeaders, uint16_t numberOfOffsets, uint16_t injectionNumber, FILE *modifiedLogoBin){
uint8_t *data;
uint32_t offset, originalOffset;
uint32_t imageSize = BlockIt(BLOCK + imageHeaders[injectionNumber].lengthOfData);
if( imageHeaders[injectionNumber].name[0] == 0){
fprintf(stdout, "Copying \t#%d:(placeholder) %s\n", injectionNumber + 1 , imageHeaders[injectionNumber].metaData);
} else {
fprintf(stdout, "Copying \t#%d:%s\n", injectionNumber + 1 , imageHeaders[injectionNumber].name);
}
data = malloc(imageSize);
memset(data, 0 , imageSize);
fread(data, 1, imageSize, originalLogoBin);
fwrite(data, 1 , imageSize, modifiedLogoBin);
free(data);
}
int32_t InjectNewStyle(FILE *originalLogoBin, IMAGEHEAD *imageHeaders, uint16_t numberOfOffsets, uint8_t *injectionName, uint16_t injectionNumber, FILE *modifiedLogoBin, uint32_t *ihMainOffsets ){
uint32_t encodedSize = 0, actualWritten = 0, imageSize = 0;
uint8_t *data, *header;
int8_t inFileName[69];
int32_t blockDifference;
uint32_t offset, originalOffset;
FILE *pngFile;
sprintf(inFileName, "%s", injectionName);
if (imageHeaders[injectionNumber].special != 1){
fprintf(stdout, "ERROR: \"Special\" is not equal to '1' \nThis would not be safe to flash!\nPlease email logo.bin in question to:\[email protected]\n");
fclose(originalLogoBin);
fclose(modifiedLogoBin);
return 0;
}
if ((pngFile = fopen(inFileName, "rb")) == NULL){
sprintf(inFileName, "%s.png", injectionName);
if ((pngFile = fopen(inFileName, "rb")) == NULL){
fclose(pngFile);
fclose(modifiedLogoBin);
fclose(originalLogoBin);
fprintf(stderr, "%s could not be read\n", inFileName);
return 0;
}
}
IMAGEHEAD new;
memset(new.blank, 0, sizeof(new.blank));
memset(new.metaData, 0, sizeof(new.metaData));
memset(new.offsets, 0, SIZEOFLONGINT * MAXOFFSETS);
strncpy(new.header, HEADER , 8);
strncpy(new.metaData, imageHeaders[injectionNumber].metaData, sizeof(imageHeaders[injectionNumber].metaData));
strncpy(new.name, injectionName, 64);
new.special = 1;
fprintf(stdout, "Injecting\t#%d:%s\n", injectionNumber + 1 , imageHeaders[injectionNumber].name);
if (((new.width = GetWidth(pngFile)) != imageHeaders[injectionNumber].width) && (!badAss)){
fprintf(stderr, "Error: Width of PNG to be injected is %d, it must be %d!\n", new.width, imageHeaders[injectionNumber].width);
fclose(pngFile);
fclose(modifiedLogoBin);
fclose(originalLogoBin);
return 0;
}
if (((new.height = GetHeight(pngFile)) != imageHeaders[injectionNumber].height) && (!badAss)){
fprintf(stderr, "Error: Height of PNG to be injected is %d, it must be %d!\n", new.height, imageHeaders[injectionNumber].height);
fclose(pngFile);
fclose(modifiedLogoBin);
fclose(originalLogoBin);
return 0;
}
uint32_t rawBytes = new.width * new.height * BYTESPERPIXEL;
uint8_t *decodedPNG = malloc(rawBytes);
lodepng_decode24_file(&decodedPNG, (uint32_t*)&new.width, (uint32_t*)&new.height , (const uint8_t*)inFileName);
if (rgb2bgr == 1){
uint8_t old;
uint32_t k = 0;
while( k < rawBytes ){
old = decodedPNG[k];
memset(&decodedPNG[k], decodedPNG[k + 2], 1);
memset(&decodedPNG[k + 2], old, 1);
k += BYTESPERPIXEL;
}
}
encodedSize = GetEncodedSize(decodedPNG, (new.width * new.height * BYTESPERPIXEL));
new.lengthOfData = encodedSize;
uint8_t *rlEncoded = malloc(BlockIt(encodedSize));
memset(rlEncoded, 0, BlockIt(encodedSize));
actualWritten = Encode(decodedPNG, rlEncoded, (new.width * new.height * BYTESPERPIXEL));
blockDifference = (((BLOCK + BlockIt(actualWritten)) - (BLOCK + BlockIt(imageHeaders[injectionNumber].lengthOfData))) / BLOCK);
fwrite(&new, 1 , BLOCK, modifiedLogoBin);
fwrite(rlEncoded, 1 , BlockIt(actualWritten), modifiedLogoBin);
free(decodedPNG);
free(rlEncoded);
RewriteHeaderZero( injectionNumber , numberOfOffsets , modifiedLogoBin , blockDifference, ihMainOffsets);
fclose(pngFile);
return 1;
}
int32_t RewriteHeaderZero( uint32_t injectionImageNumber , uint16_t numberOfOffsets, FILE *modifiedLogoBin , int32_t blockDifference, uint32_t *ihMainOffsets){
uint8_t i, j = injectionImageNumber + 1 ;
uint32_t filePosition = ftell(modifiedLogoBin);
uint32_t offset = 0;
for( ; j < numberOfOffsets; j++){
fseek(modifiedLogoBin, OFFSETSTART + (SIZEOFLONGINT * j), SEEK_SET);
offset = ihMainOffsets[j];
offset += (blockDifference * BLOCK);
fseek(modifiedLogoBin, OFFSETSTART + (SIZEOFLONGINT * j), SEEK_SET);
fwrite(&offset, 1 , SIZEOFLONGINT , modifiedLogoBin);
ihMainOffsets[j] = offset;
}
fseek(modifiedLogoBin, filePosition , SEEK_SET);
return;
}
uint32_t GetEncodedSize(uint8_t* data, uint32_t size){
uint32_t pos = 0, ret = 0;
uint16_t count = 1;
for( pos = 0 ; pos < size ; ++pos , count = 1){
while((pos < size - 1) && (count < 0xFF) && ((memcmp(&data[pos], &data[pos+1], 1)) == 0)){
count++;
pos++;
}
ret += 2;
}
return ret;
}
uint32_t Encode(uint8_t* rawRgbReading, uint8_t* rlEncoded, uint32_t rawSize){
uint32_t writePosition = 0 , readPosition = 0;
uint16_t count = 1;
for( readPosition = 0 ; readPosition < rawSize ; ++readPosition , count = 1){
while((readPosition < rawSize - 1 ) && (count < 0xFF) && ((memcmp(&rawRgbReading[readPosition], &rawRgbReading[readPosition+1], 1)) == 0)){
count++;
readPosition++;
}
rlEncoded[writePosition] = rawRgbReading[readPosition];
rlEncoded[writePosition + 1] = count;
writePosition += 2;
}
return writePosition;
}
uint32_t GetWidth(FILE *pngFile){
uint32_t width;
fseek(pngFile, 16, SEEK_SET);
fread(&width, 1, SIZEOFLONGINT, pngFile);
return(SWAP32(width));
}
uint32_t GetHeight(FILE *pngFile){
uint32_t height;
fseek(pngFile, 20, SEEK_SET);
fread(&height, 1, SIZEOFLONGINT, pngFile);
return(SWAP32(height));
}
uint64_t BlockIt(uint32_t isize){
uint32_t blockSize = BLOCK;
if ((isize % blockSize) == 0){
return isize;
}else{
return isize + (blockSize - (isize % blockSize));
}
}
void Usage(){
fprintf(stdout, "Usage: logoinjector -i \"input file\" [-l] | [-L] | [-d [-s]] | [-j \"image to be replaced\" [-b] | [-s]]\n\n");
fprintf(stdout, "Mandatory Arguments:\n\n");
fprintf(stdout, "\t-i \"C:\\xda\\logo.bin\"\n");
fprintf(stdout, "\t This is the logo.bin file to analyze or inject an image\n\n");
fprintf(stdout, "Optional Arguments:\n\n");
fprintf(stdout, "\t-d Decode all images into PNGs, (-s)wap parameter may be needed for proper color.\n");
fprintf(stdout, "\t-l Lower case 'L' is to display a short list of what is inside the input file.\n");
fprintf(stdout, "\t-L Upper case 'L' is for a more detailed list of logo.bin image contents.\n");
fprintf(stdout, "\t-b 'b' is used to tell the program to disregard width or height differences\n");
fprintf(stdout, "\t when encoding an image, the program also won't fail if it can't find a name\n");
fprintf(stdout, "\t that can't be found on the inject list when encoding images\n");
fprintf(stdout, "\t-s 's' is used to swap RGB and BGR color order. Can be used on decoding or encoding.\n");
fprintf(stdout, "\t NEW IN THIS V1.2: Swap is on by default, meaning the color order will be BGR. Using\n");
fprintf(stdout, "\t the \"-s\" switch will result in a RGB color order. Bottom line: If you (-d)ecode the\n");
fprintf(stdout, "\t images (that have color) and the colors aren't right, then you should use (-s) to \n");
fprintf(stdout, "\t decode and inject images.\n");
fprintf(stdout, "\t-j \"image(s) to be replaced\"\n");
fprintf(stdout, "\t The image(s) name to be replaced as seen in the (-l)ist\n");
fprintf(stdout, "\t NEW IN THIS V1.2: Multiple image names may be put after \"-j\"\n");
fprintf(stdout, "\t The names simply need to be separated by a space. The names now also are not case\n");
fprintf(stdout, "\t sensitive, and it doesn't matter if you put the extension at the end of the name.\n");
fprintf(stdout, "\t You actually only need to put the first characters of the name.\nExample:\n");
fprintf(stdout, "\t logoinjector -i \"your_logo.bin\" -j FHD \n\n");
fprintf(stdout, "\t This will inject a PNG for every name in the logo bin that begins with \"fhd\"\n");
return;
}
void PrintFileSize(uint32_t bytes){
float megaBytes = 0, kiloBytes = 0;
kiloBytes = (float)bytes / (float)TWOTOTHETEN;
megaBytes = kiloBytes / (float)TWOTOTHETEN;
if (kiloBytes < (float)TWOTOTHETEN){
fprintf(stdout, "\t%.2f KB\n", kiloBytes);
} else {
fprintf(stdout, "\t%.2f MB\n", megaBytes);
}
return;
}
uint32_t GetFileSize(FILE *temp){
fseek(temp, 0 , SEEK_END);
uint32_t fileSizeZ = ftell(temp);
return(fileSizeZ);
}
int32_t main(int32_t argc, int8_t **argv){
int32_t c;
int16_t h, i , j , k = 0;
FILE *originalLogoBin = NULL, *modifiedLogoBin = NULL;
uint8_t *inputFile = NULL;
uint8_t *injectNames[MAXOFFSETS];
int16_t decodeAllOpt = 0;
int16_t encodeOpt = 0;
int16_t inject = 0;
int16_t listFile = 0;
uint16_t numberOfOffsets = 0, injected = 0;
for(i = 0; i < MAXOFFSETS; i++){
injectNames[i] = NULL;
}
fprintf(stdout, "__________________________________________________________-_-\n");
fprintf(stdout, "Logo Injector v1.2\n\nWritten By Makers_Mark @ XDA-DEVELOPERS.COM\n");
fprintf(stdout, "_____________________________________________________________\n\n");
while ((c = getopt (argc, (char**)argv, "sSj:J:hHbBdDlLi:I:")) != -1){
switch(c)
{
case 'l':
listFile = 1;
break;
case 'L':
decodeAllOpt = 1;
convertToPNG = 0;
break;
case 'i':
case 'I':
inputFile = optarg;
break;
case 'b':
case 'B':
badAss = 1;
break;
case 'j':
case 'J':
h = optind - 1 ;
uint8_t *nextArg;
while(h < argc){
inject = 1;
nextArg = strdup(argv[h]);
h++;
if(nextArg[0] != '-'){
injectNames[k++] = nextArg;
} else {
break;
}
}
optind = h - 1;
break;
case 'd':
case 'D':
decodeAllOpt = 1 ;
break;
case 's':
case 'S':
rgb2bgr = -1 ;
break;
case 'h':
case 'H':
Usage();
return 0;
break;
default:
Usage();
return 0;
break;
}
}
if (inputFile == NULL){
Usage();
return 0;
}
fprintf(stdout, "FILE: %s\n_____________________________________________________________\n\n", inputFile);
if (rgb2bgr == 1){
fprintf(stdout, "BGR is the color order. Use \"-s\" switch to change it to RGB.\n\n");
} else {
fprintf(stdout, "RGB is the color order. Use \"-s\" switch to change it to BGR.\n\n");
}
if ((originalLogoBin = fopen(inputFile, "rb")) == NULL){
fprintf(stderr, "%s could not be opened\n", inputFile);
return 0;
}
if (!IsItALogo(originalLogoBin)){
fprintf(stdout, "\nThis is NOT a valid Logo.bin\n\n");
fclose(originalLogoBin);
return 0;
}
if (!IsItTheNewStyle(originalLogoBin)){
fprintf(stdout, "\nThis is the old style logo.bin\n\n");
fclose(originalLogoBin);
return 0;
}
numberOfOffsets = GetNumberOfOffsets(originalLogoBin);
IMAGEHEAD *imageHeaders = ParseHeaders(originalLogoBin, numberOfOffsets);
if (listFile){
ListFileDetails(originalLogoBin, imageHeaders);
return 1;
}
if(inject){
uint32_t ihMainOffsets[MAXOFFSETS];
uint8_t found = 0, exitFlag = 0;
for (i = 0; i < MAXOFFSETS ; i++){
ihMainOffsets[i] = 0;
}
for (j = 0; j < k ; j++){
for (i = 0 ; i < numberOfOffsets ; i++ ){
if((strcasecmp(imageHeaders[i].name, injectNames[j]) == 0) ||
(strncasecmp(imageHeaders[i].name, injectNames[j], strlen(injectNames[j])) == 0)){
found = 1;
break;
} else {
found = 0;
}
}
if (!found){
fprintf(stdout, "ERROR: \"%s\" is not in the logo bin !!!!\n", injectNames[j]);
exitFlag = 1;
}
}
if ((exitFlag) && (!badAss)){
fclose(originalLogoBin);
exit(0);
}
memcpy(&ihMainOffsets , &imageHeaders[0].offsets, SIZEOFLONGINT * MAXOFFSETS);
fseek(originalLogoBin, 0, SEEK_SET);
if ((modifiedLogoBin = fopen("modified.logo.bin", "wb+")) == NULL){
fclose(modifiedLogoBin);
fclose(originalLogoBin);
fprintf(stderr, "modified.logo.bin could not be opened\n");
return 0;
}
for (i = 0 ; i < numberOfOffsets ; i++ , injected = 0 ){
for (j = 0; j < k ; j++){
if((strcasecmp(imageHeaders[i].name, injectNames[j]) == 0) ||
(strncasecmp(imageHeaders[i].name, injectNames[j], strlen(injectNames[j])) == 0)){
if (InjectNewStyle(originalLogoBin, imageHeaders , numberOfOffsets, imageHeaders[i].name, i, modifiedLogoBin, ihMainOffsets) == 0){
fprintf(stderr, "Error: Injecting %s\n", imageHeaders[i].name);
fclose(originalLogoBin);
fclose(modifiedLogoBin);
return 0;
}
if ( i != numberOfOffsets - 1 ){
fseek(originalLogoBin, imageHeaders[0].offsets[i+1], SEEK_SET);
}
injected = 1;
break;
}
}
if (!injected){
Copy(originalLogoBin , imageHeaders, numberOfOffsets, i, modifiedLogoBin);
}
}
uint16_t modifiedNumberOfOffsets = 0;
if (GetNumberOfOffsets(modifiedLogoBin) != numberOfOffsets){
fprintf(stderr, "ERROR: The number of offsets doesn't match the Original file!!\n");
fclose(modifiedLogoBin);
if (!badAss){
unlink("modified.logo.bin");
}
exit(0);
}
fprintf(stdout, "\n\nContents of the NEW \"modified.logo.bin\":\n");
fprintf(stdout, "VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV\n\n");
ListFileDetails(modifiedLogoBin, imageHeaders);
fprintf(stdout, "\n\n_____________________________________________________________\nOriginal filesize: ");
PrintFileSize(GetFileSize(originalLogoBin));
fprintf(stdout, "Modified filesize: ");
PrintFileSize(GetFileSize(modifiedLogoBin));
fprintf(stdout, "-------------------------------------------------------------\n");
fclose(originalLogoBin);
fclose(modifiedLogoBin);
return 1;
}
if (decodeAllOpt){
DecodeLogoBin(originalLogoBin, imageHeaders);
fclose(originalLogoBin);
return 1;
}
fclose(originalLogoBin);
return 1;
}
Terrific, this works. Thank you a lot!
After a little trial-and-error and some time in our beloved QHSUSB_DLOAD mode, I finally got it to work! I own a OnePlus One, and I had to use the -s parameter to get it to work correctly. Just a heads-up for any OPO owners who wants to use this. Great work, OP!
treChoy said:
After a little trial-and-error and some time in our beloved QHSUSB_DLOAD mode, I finally got it to work! I own a OnePlus One, and I had to use the -s parameter to get it to work correctly. Just a heads-up for any OPO owners who wants to use this. Great work, OP!
Click to expand...
Click to collapse
Thanks for chiming in, I was going to ask you to test for me initially. Can you elaborate on what happened?
makers_mark said:
Thanks for chiming in, I was going to ask you to test for me initially. Can you elaborate on what happened?
Click to expand...
Click to collapse
Just a foreword that I was using a Windows 8.1 machine, which is bound to be the cause of some of the issues I ran into.
After I unzipped the program and put the logo.bin in the extracted folder, I kept running the commands, but each time, I'd get an error message saying that the program didn't support my OS version, or something to that effect. I tried rewording the commands, but to no avail. Eventually, I just deleted the whole folder and extracted the package again. That seemed to do the trick.
So I had all the images extracted, and I created the ones I wanted to replace. There was a bit of confusion repackaging the image, since the OPO's logo.bin places the ".png" into the name of the images, but eventually, I got it all right. I flashed the modified logo.bin, but when I tried to reboot, my computer started installing drivers for QHSUSB. This had happened before when I was playing around with the LOGO partition, and it was an easy fix. I just jammed the power button for 30 seconds, and prayed to God. Thankfully, the phone booted up, but the splash screen I had created had its colors messed up. I assumed that I needed to swap the red and the blue, so I used the parameter you provided and packaged a new splash screen. I flashed it, and everything looked fine.
It's definitely a little more intimidating than the tool that @chillstep1998 created, but with a little trial-and-error, it's certainly doable. Great work!
Oh, yeah. I needed to use the -s parameter too and I skipped putting the logo.bin in through fastboot - I just modded an install zip and flashed it in with TWRP.
Thanks for this program. Glad that it's back from someone for CM12 as we waited for quite some time now. I have a query though about repacking.
logoinjector.exe -i logo.bin -j (image name you want to replace)
Is it possible to put different file names at the same time if I want to replace two or three files at the same time like this
logoinjector.exe -i logo.bin -j 4-fastboot.png 5-lowpower.png
because it doesn't work for me, I will have to run this command for the number of times I have files to replaced?
Does this method work with custom roms based on nightly cm 12.1?I'm currently on exodus rom.
Spyrious said:
Does this method work with custom roms based on nightly cm 12.1?I'm currently on exodus rom.
Click to expand...
Click to collapse
I suppose it should because logo.bin would be same for all those roms.
Sent from my "GT-I9300/1+1" powered by Carbon Rom & Boeffla/ak Kernel
Fueled by 7000mAh ZeroLemon Battery
Awesome! I had to also use the -s parameter but it worked great. Thanks OP.
Is this an appropriate place to start sharing logos or do we need a separate thread for that?
makers_mark said:
Code:
/*
* Logo Injector v1.0
[/QUOTE]
WOW - Thanks !
I've waited a LONG time for this !
Few things to let you know
1. On my Win 8.1 x64 I run Comodo CIS - which prevents LogoInjector.exe from creating the PNG images after I run "logoInjector.exe -i logo.bin -d".
This is of course the behavior of a false-positive, the overprotection of comodo A/V.
So once I temporary disable it -LogoInjector can successfully create the PNGs.
2. I also, as already reported, needed to use the -s switch inorder to get the right colors
3. I would also very much appreciate if it will be possible to inject multiple images at once with one command.
4. I can advise to update the OP with the size limits of the logo.bin ( if there is at all )
I injected a 276KB png into 335KB logo.bin and got a modified logo.bin size 12,171KB ( 12MB ! ) - never the less - After I flashed it - everything is OK.
5. I can advise to put in the OP a link to a tool/method ( if exist at all ) that can enable extraction of the current installed logo.bin from the phone it self.
button line - VERY GOOD WORK ! :good: :good: :good::highfive:
[B][U]EDIT:[/U][/B]
I attach a[B] FLASHABLE ZIP FILE that INSTALLS the logo.bin[/B] found inside the zip.
just replace the logo.bin in the root of the zip with your custom made "logo.bin".
This method is an alternative to the fastboot command "fastboot flash LOGO logo.bin"
Click to expand...
Click to collapse
330kb modified bootlogo
I got a 330KB modified logo.bin file
Isn't it supposed to be around 16MB?
I'm currently on cm12.1 06/08/2015 (DD/MM/YYYY)
ranger1021994 said:
I got a 330KB modified logo.bin file
Isn't it supposed to be around 16MB?
I'm currently on cm12.1 06/08/2015 (DD/MM/YYYY)
Click to expand...
Click to collapse
Size depends on the size of embedded images.
Sent from my "GT-I9300/1+1" powered by Carbon Rom & Boeffla/ak Kernel
Fueled by 7000mAh ZeroLemon Battery
LOGO.bin file size
nicesoni_ash said:
Size depends on the size of embedded images.
Sent from my "GT-I9300/1+1" powered by Carbon Rom & Boeffla/ak Kernel
Fueled by 7000mAh ZeroLemon Battery
Click to expand...
Click to collapse
My original LOGO file is 16MB big.
How can my modified file be only 330KB?
I don't know what is causing the file size to come down drastically from 16MB to just 330KB. Is it normal? Because I'm not sure it is
ranger1021994 said:
My original LOGO file is 16MB big.
How can my modified file be only 330KB?
I don't know what is causing the file size to come down drastically from 16MB to just 330KB. Is it normal? Because I'm not sure it is
Click to expand...
Click to collapse
Check all image files size individually and if the difference is not that huge then surely something is wrong.
Sent from my "GT-I9300/1+1" powered by Carbon Rom & Boeffla/ak Kernel
Fueled by 7000mAh ZeroLemon Battery
nicesoni_ash said:
Check all image files size individually and if the difference is not that huge then surely something is wrong.
Click to expand...
Click to collapse
ranger1021994 said:
My original LOGO file is 16MB big.
How can my modified file be only 330KB?
I don't know what is causing the file size to come down drastically from 16MB to just 330KB. Is it normal? Because I'm not sure it is
Click to expand...
Click to collapse
gps3dx said:
I injected a 276KB png into 335KB logo.bin and got a modified logo.bin size 12,171KB ( 12MB ! ) - never the less - After I flashed it - everything is OK.
Click to expand...
Click to collapse
@read my quote.
if you enter an image with only ONE COLOR background ( Same RBG values, not gradient ! ) it can drastically lower the final file size.
You can of course use black as background color and crop the images size to your content, so that the cropped areas will be filled automatically by the OPO as black color.
The idea here is that if you'll have full sized photo (1080x1920) with small area content (like 300x400), it contains black areas ( for no reason ) which enlarges the final file size - which make no sense.
nevertheless, Read my quote, as you can see I flash a ~12MB file while the original file was 335KB - and everything works!
I have a stupid question, how can I know whether I have a CM12 or CM11 logo in my oneplus? I have flashed CM11 as a primary rom and flashed CM12 as a secondary rom. I do remember that I flashed a CM12 zip to be able to flash CM12 as a secondary rom but that's a faint memory and I want to be sure before flashing a logo because last time I did that, I lost everything in my Oneplus and had to start from the beginning first by reviving it from its dead state.
Thanks.
nicesoni_ash said:
I have a stupid question, how can I know whether I have a CM12 or CM11 logo in my oneplus? I have flashed CM11 as a primary rom and flashed CM12 as a secondary rom. I do remember that I flashed a CM12 zip to be able to flash CM12 as a secondary rom but that's a faint memory and I want to be sure before flashing a logo because last time I did that, I lost everything in my Oneplus and had to start from the beginning first by reviving it from its dead state.
Thanks.
Click to expand...
Click to collapse
EDIT: Deleted for misinformation
It works!!
gps3dx said:
@read my quote.
if you enter an image with only ONE COLOR background ( Same RBG values, not gradient ! ) it can drastically lower the final file size.
You can of course use black as background color and crop the images size to your content, so that the cropped areas will be filled automatically by the OPO as black color.
The idea here is that if you'll have full sized photo (1080x1920) with small area content (like 300x400), it contains black areas ( for no reason ) which enlarges the final file size - which make no sense.
nevertheless, Read my quote, as you can see I flash a ~12MB file while the original file was 335KB - and everything works!
Click to expand...
Click to collapse
AMAZING!
It works!!
Finally
Thanks a lot!

Fatal Error, null object. How to debug?

I have inported an Eclipse app into Studio. When I run the app I get the fatal error:
Attempt to invoke virtual method 'void android.nfc.NfcAdapter.enableForegroundDispatch(android.app.Activity, android.app.PendingIntent, android.content.IntentFilter[ ], java.lang.String[ ][ ])' on a null object reference
As far as I can tell the error is caused by the mAdapter.enableForegroundDispatch method below, because one ore more of it's parameters is null. I put a breakpoint there and run the debugger in the emulator. It never hits the breakpoint. I also set the debugger to break on any exception and it doesn't. the App starts and I get the "unfortunately the app has stopped" message.
@override
protected void onResume()
{
// TODO Auto-generated method stub
super.onResume();
//Used for DEBUG : Log.v("NFCappsActivity.java", "ON RESUME NFC APPS ACTIVITY");
mPendingIntent = PendingIntent.getActivity(this, 0,new Intent(this, getClass()).addFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP), 0);
mAdapter.enableForegroundDispatch(this, mPendingIntent, mFilters, mTechLists);
}
Thanks for the help.
Rich

PowerManger permission denied with Magisk and SuperSU

First of all, we need to reboot the device by button click.
Device: Mediatek MT6737M Android 6.0 running Marshmallow
I currently have three devices. One rooted with Magisk another SuperSU the third with Kingroot. In the settings on all three root managers I have it set to grant all permissions. When we try and restart Kingroot flashes a prompt to allow permission which we can work around but Kingroot is riddled with garbage that we don't want. We want to use Magisk or SuperSU because they are clean with less baggage. Magisk and SuperSU however throw an error: java.io.IOException:
Code:
Error running exec(). Command: [/system/bin/su, -c, reboot now] Working Directory: null Environment: null.
This is the code we're using to access PowerManager:
Code:
void reboot() {
if (reboot) {
try {
Process proc = Runtime.getRuntime().exec(new String[]{"/system/bin/su", "-c", "reboot"});
proc.waitFor();
} catch (Exception ex) {
Log.e(TAG, "Error ", ex);
}
}
}
Is there a way to grant permission to this process using either Magisk or SuperSU? If not is there another rooting management tool or software that is clean and malware free that can achieve that?
NOTE: Code by senior developer I am a Baby, Jr dev here tasked with finding the answer. Please be patient if I ask dumb questions.
Ok so first thing I'll start by saying that you should be making su calls in a background thread. The su call is a blocking call so it will block the UI thread which can cause ANRs (crashes) and overall bad user experience. AsyncTask is perfect for su calls to run in the background instead.
You should also stick with Magisk as it is actively being developed and is the current standard.
Let's get started. Create a new class and call it RootShell.java. Then copy the following code into it.
Java:
class RootShell {
private static void exec(String[] cmd) {
new Execute().execute(cmd);
}
private static class Execute extends AsyncTask<String, Void, Void> {
Override
protected Void doInBackground(String... cmds) {
try {
Process process = Runtime.getRuntime().exec("su");
DataOutputStream os = new DataOutputStream(process.getOutputStream());
for (String tmpCmd : cmds) {
os.writeBytes(tmpCmd + "\n");
}
os.writeBytes("exit\n");
os.flush();
os.close();
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
}
}
Keep in mind that XDA has awful code formatting so the Override should have the @ symbol in front of it.
Now you can pass single or multiple root commands to this class which will be executed in a background thread. Here's how...
Lets say you're using a button in another class to reboot the phone. This is what it would look like...
Java:
private void rebootButton(View view) {
String[] cmd = { "reboot" };
RootShell.exec(cmd);
}
To pass multiple commands your button would look like this.
This is to reboot into safe mode...
Java:
private void rebootSafeMode(View view) {
String[] cmd = {
"setprop persist.sys.safemode 1",
"setprop ctl.restart zygote"
};
RootShell.exec(cmd);
}
For more info on how to properly su you should check out the following link...
https://su.chainfire.eu/
Hope this helps you with your app and good luck.

Categories

Resources