Launch another app using an intent with package name if app has a launcher activity or using package name and class name of main activity.

Android - Launch another app

// only works if app has a launcher activity
Intent launchIntent = getPackageManager().getLaunchIntentForPackage("com.example.yourapp");
startActivity(launchIntent);

// works if we know the name of the main activity, even if not a launcher
Intent intent = new Intent(Intent.ACTION_MAIN);
intent.setClassName("com.example.yourapp", "com.example.yourapp.MainActivity");
startActivity(intent);

hello, thanks for code! but i have a question! i run a com.example.myapp, but how to finish or kill it after 10 sec?

That would be handled in the target app, a timer countdown that triggers an activity finish after 10 seconds

Code is working...but its not working on Above android 10 version..is there any solution

Code is working...but its not working on Above android 10 version..is there any solution

Hello!
My working solution for Android 13 is:

add this section in AndroidManifest.xml:

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:tools="http://schemas.android.com/tools"
    xmlns:android="http://schemas.android.com/apk/res/android">

  ...
  <queries> <!-- name the required packages -->
    <package android:name="com.your.company.your.app"/>
    <package android:name="com.other.company.other.app"/>
  </queries>
  ...

</manifest>

and my method in Java is:

public void startNewActivity(Context context, String packageName) {
        Intent intent = context.getPackageManager().getLaunchIntentForPackage(packageName);
        //Fix for Android 13
        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.TIRAMISU) {
            intent.addCategory(Intent.CATEGORY_LAUNCHER);
        }

        if (intent == null) {
            // Bring user to the market or let them choose an app, as the package is not installed
            intent = new Intent(Intent.ACTION_VIEW);
            intent.setData(Uri.parse("market://details?id=" + packageName));
        }
        intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        context.startActivity(intent);
    }

you made my day @dominicthomas !! thx for sharing this..

only change needed for me was using context.startActivity(intent); instead of startActivity(intent); (Android14)