SamJ SamJ - 2 months ago 23
Android Question

Force Close an app programmatically

I need to make an application that can programmatically do what the force stop button does to applications. (I am using root permissions)

ScreenShot

I have tried this code:

private void killApp(){
try {
int pid = getPid(com.XXX);
if(pid != -1){
String command = "kill "+pid;
Log.i("Got PID",pid + "");
try {
Process suProcess = Runtime.getRuntime().exec("su");
DataOutputStream os = new DataOutputStream(suProcess.getOutputStream());

os.writeBytes(command + "\n");
os.flush();

Log.i("Executed","Kill " + pid);
} catch (IOException e) {
// Handle error
}
} else {
Log.i("Not Found","App Not Found");
}
} catch (Exception e) {
e.printStackTrace(); // Device not rooted!
}
}

private int getPid(String packageName){
ActivityManager am = (ActivityManager)getApplicationContext().getSystemService(Context.ACTIVITY_SERVICE);
List<ActivityManager.RunningAppProcessInfo> pids = am.getRunningAppProcesses();
int processid = 0;
for(int i = 0; i < pids.size(); i++) {
ActivityManager.RunningAppProcessInfo info = pids.get(i);

Log.i("PID",pids.get(i) + "");
Log.i("PID Package",info.processName);

if(info.processName.equalsIgnoreCase(packageName)){
processid = info.pid;
return processid;
}
}
return -1;
}


But the problem is that the process isn't found, even though the force stop button isn't grayed out.

Even Using:

Process suProcess = Runtime.getRuntime().exec("su");
DataOutputStream os = new DataOutputStream(suProcess.getOutputStream());


os.writeBytes("kill "+ APP_PID + "\n");

os.flush();


Doesn't do what the force stop button does since after i execute this code the force stop button isn't grayed out.

Using root how can I programmatically do what the force stop button in the App info does?

Answer

I found a solution:

Process suProcess = Runtime.getRuntime().exec("su");
DataOutputStream os = new DataOutputStream(suProcess.getOutputStream());

os.writeBytes("adb shell" + "\n");

os.flush();

os.writeBytes("am force-stop com.xxxxxx" + "\n");

os.flush();

Where com.xxxxxx is package name of application to force stop.