Is there a way to get current process name in Android

Question

I set an Android:process=\":XX\" for my particular activity to make it run in a separate process. However when the new activity/process init, it will call my Application:onC

Answer 1

Get it from ActivityThread

In API 28+, you can call Application.getProcessName(), which is just a public wrapper around ActivityThread.currentProcessName().

On older platforms, just call ActivityThread.currentProcessName() directly.

Note that prior to API 18, the method was incorrectly called ActivityThread.currentPackageName() but still in fact returned the process name.

Example code

public static String getProcessName() {
    if (Build.VERSION.SDK_INT >= 28)
        return Application.getProcessName();

    // Using the same technique as Application.getProcessName() for older devices
    // Using reflection since ActivityThread is an internal API

    try {
        @SuppressLint("PrivateApi")
        Class activityThread = Class.forName("android.app.ActivityThread");

        // Before API 18, the method was incorrectly named "currentPackageName", but it still returned the process name
        // See https://github.com/aosp-mirror/platform_frameworks_base/commit/b57a50bd16ce25db441da5c1b63d48721bb90687
        String methodName = Build.VERSION.SDK_INT >= 18 ? "currentProcessName" : "currentPackageName";

        Method getProcessName = activityThread.getDeclaredMethod(methodName);
        return (String) getProcessName.invoke(null);
    } catch (ClassNotFoundException e) {
        throw new RuntimeException(e);
    } catch (NoSuchMethodException e) {
        throw new RuntimeException(e);
    } catch (IllegalAccessException e) {
        throw new RuntimeException(e);
    } catch (InvocationTargetException e) {
        throw new RuntimeException(e);
    }
}

Compatibility

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