How to determine which application is open on Android

Question

I am developing a custom Android keyboard and I want to send sticky ideas to my friends, for example, in a video call from my keyboard. I have added some png for this.

When I use the android share for Android, I must first select the application to share. Is it possible to detect the current open application from my keyboard? For example, if I’m hanging out with video calls, then I want to name an intention telling him to share with “com.something.hangouts”

If I am in the FB envoy, I tell him "com.something.facebook.messenger", etc.

I tried to do this:

fun getOpenedApplication() { var am = this.getSystemService(ACTIVITY_SERVICE) as ActivityManager; var l = am.getRecentTasks(1, ActivityManager.RECENT_WITH_EXCLUDED); var i = l.iterator(); var pm = this.packageManager; while (i.hasNext()) { try { var intent = i.next().baseIntent; var list = pm.queryIntentActivities(intent, PackageManager.MATCH_DEFAULT_ONLY); var c = pm.getApplicationLabel(pm.getApplicationInfo( list[0].activityInfo.packageName, PackageManager.GET_META_DATA)); Toast.makeText(this, "Application name: " + c.toString(), Toast.LENGTH_LONG).show(); } catch (e: Exception) { Toast.makeText(this, "Application name not found: " + e.toString(), Toast.LENGTH_LONG).show(); } } } 

But it does not work well ... It returns the launcher or keyboard. (Randomly)

I tried to get the first application from the list of recent applications, but it did not work

Answer 1

This is a very simple task.

 String packageName = getCurrentInputEditorInfo().packageName; 

of your class InputMethodService.

Answer 2

For Android L and above, use:

 ActivityManager activityManager = (ActivityManager) newContext.getSystemService(Context.ACTIVITY_SERVICE); List<RunningAppProcessInfo> runAppProcessesList = activityManager.getRunningAppProcesses(); for (RunningAppProcessInfo runAppProcess : runAppProcessesList) { if (runAppProcess.importance == RunningAppProcessInfo.IMPORTANCE_FOREGROUND) { Log.d("current foreground App", runAppProcess.processName); } } 

Answer 3

To get the currently running application, use the following function for the Android version prior to kitkat

 public String getRunningAppPackageName() { ActivityManager activityManager = (ActivityManager)context.getSystemService(Context.ACTIVITY_SERVICE); List<RunningTaskInfo> tasks = activityManager.getRunningTasks(1); RunningTaskInfo p = (RunningTaskInfo) tasks.get(0); return p.baseActivity.getPackageName();} 

To get the currently running application, use the following function for the Android version above kitkat

  public String getRunningAppPackageName() { ActivityManager activityManager = (ActivityManager)getSystemService(Context.ACTIVITY_SERVICE); List<RunningTaskInfo> tasks = activityManager.getRunningAppProcesses(); return activityManager.getRunnningAppProcesses().get(0).processName;} 

Answer 4

You can also use accessibility services, but for this you need to redirect your users to accessibility settings to enable them. Sample code is given below to receive a package of just opened application.

  public class MyAccessibilityService extends AccessibilityService { @Override public void onAccessibilityEvent(AccessibilityEvent event) { String packageName = event.getPackageName(); if(packageName.equals("com.sample")) //Do whatever you want }} 

Learn more about this here . Accessibility Services

Answer 5

Check this code

  /** * @param context * @return * @throws PackageManager.NameNotFoundException */ public String getRunningPackageName(Context context) throws PackageManager.NameNotFoundException { ActivityManager mgr = (ActivityManager) getSystemService(Context.ACTIVITY_SERVICE); String packagename = ""; if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) { List<ActivityManager.AppTask> tasks = mgr.getAppTasks(); for (ActivityManager.AppTask task : tasks) { packagename = task.getTaskInfo().baseIntent.getComponent().getPackageName(); if (packagename.equalsIgnoreCase(context.getPackageName().toString())) { break; } } } else { ActivityManager activityManager = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE); List<ActivityManager.RunningTaskInfo> alltasks = activityManager.getRunningTasks(1); packagename = alltasks.get(0).topActivity.getPackageName(); } return packagename; } private void yourMethodName(Context context, Bundle notifyBundle) { boolean isActivityFound = false; String packageName = ""; try { packageName = getRunningPackageName(context); } catch (PackageManager.NameNotFoundException e) { e.printStackTrace(); } if (packageName.equalsIgnoreCase(context.getPackageName().toString())) { isActivityFound = true; } } 

Answer 6

You can use getRunningAppProcesses api from ActivityManager, but when your result is more than 1 MB (basically, if more than 30-35 applications are running), you will get a "TransactionTooLargeException". This Android implementation does not allow the transfer of binder data greater than 1 MB.