I am looking for a way to kill the foreground Dalvik App(actively running) from the linux kernel(using it's process ID)?
How can I achieve this? any ideas? Does the kernel see the pid of a running App?
How does for eg. process Manager/Task manager in Android achieve this?
Any leads?
Edited:
The problem I'm looking at is a way to kill an App that "behaves differently than intended".
This "different behaviour" is always fixed. Think of it like sending a message to a particular port.
How can I kill an App by staying outside of it and still having permissions to kill it? That is why I was wondering if I have to make this module sit on the framework if not right in the kernel.
This will get all running processes and kill those with the specified pid:
ArrayList<Integer> pids = new ArrayList<Integer>();
ActivityManager manager = (ActivityManager)this.getSystemService(Context.ACTIVITY_SERVICE);
List<ActivityManager.RunningAppProcessInfo> listOfProcesses = manager.getRunningAppProcesses();
for (ActivityManager.RunningAppProcessInfo process : listOfProcesses)
{
if (pids.contains(process.pid))
{
// Ends the app
manager.restartPackage(process.processName);
}
}
You will need these permissions to do this:
<uses-permission android:name="android.permission.GET_TASKS" />
<uses-permission android:name="android.permission.RESTART_PACKAGES"/>
Related
This question already has answers here:
Kill another application on Android?
(2 answers)
Closed 3 years ago.
I want to kill another app from my Application once the other app comes into foreground.
I am already capturing if my app is in foreground or background. When my app gets to background, I want to filter for the right process by it's name and use its pid to kill it. I'm using ActivityManager.getRunningAppProcesses() and filtering the processes for the wanted name, but only processes related to my app are shown. That's the first problem, because I cannot access the pid of the other apps processes.
The next problem is that, even by using the current pid (from adb) of the other apps process, my code which should kill it does not work (the other app keeps running).
I am using
<uses-permission android:name="android.permission.KILL_BACKGROUND_PROCESSES" /> and <uses-permission android:name="android.permission.GET_TASKS" />.
I assume that I would need be root to kill other apps, so also something like Runtime.getRuntime().exec(arrayOf<String>("su", "-c", "kill 24043")) does not work.
val amg = getSystemService(ACTIVITY_SERVICE) as ActivityManager
var processes = amg.getRunningAppProcesses();
for (info in processes) {
if (info.processName.equals(otherAppName)) {
val process = Runtime.getRuntime().exec(arrayOf<String>("su", "-c", "kill $pid"))
android.os.Process.killProcess(info.pid)
android.os.Process.sendSignal(info.pid, android.os.Process.SIGNAL_KILL)
amg.killBackgroundProcesses(info.processName)
}
}
The last three lines result in the signal being send, but nothing happening and the one before obviously leads to java.io.IOException: Cannot run program "su": error=13, Permission denied.
Is there another way to kill another app, that doesn't require to be root?
You can't kill another app for security reasons. As a user, i don't want to install an app that close my apps without a good reason and without I even know about it, it would be pretty weird. That being said, it's possible to close background process from another app's, I didn't test it by myself but here is:
ActivityManager manager = (ActivityManager)getSystemService(Activity.ACTIVITY_SERVICE);
manager.killBackgroundProcesses(packageName);
You'll need to put this on your Manifest as well:
<uses-permission android:name="android.permission.KILL_BACKGROUND_PROCESSES" />
I want force stop my app after activity destroyed , i tried to use
Process.KillProcess(Process.MyPid());
the app stop but it still able to force stop it again in Settings>App
I also tried to stop it by this code
ActivityManager am = (ActivityManager)GetSystemService(Context.ActivityService);
am.KillBackgroundProcesses("TurkeyanaCall.TurkeyanaCall");
but i got
An unhandled exception occured.
i want to click this button from my app in anyway
Unhandled Exception:
Java.Lang.SecurityException: Permission Denial: killBackgroundProcesses() from pid=2440, uid=10554 requires android.permission.KILL_BACKGROUND_PROCESSES
As the document said, KillBackgroundProcesses :
Have the system immediately kill all background processes associated with the given package. This is the same as the kernel killing those processes to reclaim memory; the system will take care of restarting these processes in the future as needed.
Requires the KILL_BACKGROUND_PROCESSES permission.
You should add the permission :
<uses-permission android:name="android.permission.KILL_BACKGROUND_PROCESSES" />
Then you could use it :
ActivityManager am = (ActivityManager)GetSystemService(Context.ActivityService);
am.KillBackgroundProcesses(PackageName);
Android.OS.Process.KillProcess(Android.OS.Process.MyPid());
Java.Lang.JavaSystem.Exit(0);
I also used this to kill all process used in app .
First i stopped all services then i kill the app totally from everywhere the code below explain this .
try{
StopService(new Intent(this, typeof(CallService)));
StopService(new Intent(this, typeof(TwilioClientService)));
} catch(Exception ee){ }
ActivityManager am = (ActivityManager)GetSystemService(Context.ActivityService);
am.KillBackgroundProcesses("TurkeyanaCall.TurkeyanaCall");
Android.OS.Process.SendSignal(Android.OS.Process.MyPid(), Signal.Kill);
I am getting List of running background applications. To kill those applications by using:
List<RunningAppProcessInfo> listprocInfos =actvityManager.getRunningAppProcesses();
if(RunningAppProcessInfo procInfos : listprocInfos ) {
activityManager.killBackgroundProcesses(procInfos.processName);
// or activityManager.restartPackage(procInfos.processName);
}
But It is not working please help me.
You must have special permissions to kill other applications programmatic.
<uses-permission android:name="android.permission.KILL_BACKGROUND_PROCESSES" />
Also there is no grantee this will kill the process. If the device is rooted try finding the PID of the process and kill it via command.
I am using this code to stop the selected running applications in android phone:
Button view = (Button)findViewById(R.id.button1);
view.setOnClickListener(new View.OnClickListener(){
public void onClick(View view){
String appname = getIntent().getExtras().getString("appname");
String pname=appname.split("\n")[3];
int id=Integer.parseInt(pname);
finish();
android.os.Process.killProcess(id);
The Id is correct but this code is not working... any help??
Is there any other code to kill processes by using their id??
if you check the Android API for Kill Process it says the following:
Kill the process with the given PID. Note that, though this API allows us to request to kill any process based on its PID, the kernel will still impose standard restrictions on which PIDs you are actually able to kill. Typically this means only the process running the caller's packages/application and any additional processes created by that app; packages sharing a common UID will also be able to kill each other's processes.
This means you're not able to kill other apps except the ones your app package is in.
This answer explains why it is so and how it works: https://stackoverflow.com/a/7560009/1306012
You need the package name of the app you want to kill (for example com.facebook.katana) and then call
ActivityManager.killBackgroundProcesses(packageName);
//for example: kill the facebook app
//ActivityManager.killBackgroundProcesses("com.facebook.katana);
However, you need the permission KILL_BACKGROUND_PROCESSES defined in your manifest.
you can use
ActivityManager manager = (ActivityManager)getSystemService(Context.ACTIVITY_SERVICE);
List<RunningAppProcessInfo> services = manager.getRunningAppProcesses();
String service1name = service[1].processName;
you can get all running process's package names, check which one you want to kill, choose that
process get process id by service.pid.
and call
android.os.Process.killProcess(service.pid);
i am trying to find out the list of processes which is running in the device.
after that i want to force close all the process except my current application.
I tried using this below code . Its listing out the processed but its not killing the processes .
ActivityManager manager = (ActivityManager) context.getSystemService(ACTIVITY_SERVICE);
List<RunningAppProcessInfo> process = manager.getRunningAppProcesses();
for (int i = 1 ;i< process.size();i++)
{
int pid = process.get(i).pid;
System.out.println("Task " + process.get(i).processName);
android.os.Process.killProcess(pid);is
}
This above code only i tried to kill the processes. once after the killprocess called i again called the getRunningAppProcess() to check the process are killed or not. still its showing all the processes.
Its listing out the processed but its not killing the processes .
Of course. You do not have rights to kill other processes using killProcess(). I have no idea why you think you would have such a right.
We want to kill all foreground as well as background application also.
This will crash the operating system.
If you only want your application running, build your own devices with your own firmware and your own OS and your own GUI framework, put your application on those devices, and distribute those devices.
You can try killBackgroundProcesses() (it needs package names), you need the KILL_BACKGROUND_PROCESSES permission for it. And you can kill your own process without a special permission (be sure to do it last).
If it still doesn't work, you need to root the phone, and do it as root.