android重启APP并杀掉之前的APP进程

Intent intent = applicationContext.getPackageManager().getLaunchIntentForPackage(application.getPackageName());
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TOP
        | Intent.FLAG_ACTIVITY_CLEAR_TASK);
applicationContext.startActivity(intent);
android.os.Process.killProcess(android.os.Process.myPid());
System.exit(0);

加上Intent.FLAG_ACTIVITY_CLEAR_TOP和Intent.FLAG_ACTIVITY_CLEAR_TASK这两个flag可以避免重启时黑屏一两秒