从最近启动应用程序时重定向到特定 Activity

Redirect to particular Activity when launching app from recents

假设您在 Activity A 中并按下主页按钮,您的应用现在将转到后台。现在长按你的主页按钮,你可以看到最近的应用程序。如果我点击我的应用程序,它应该是 activity 而不是 Activity A.

我认为这是一个奇怪的要求,但你可以这样做:

@Override
public void onResume() {
   startActivity(new Intent(this, TargetActivity.class));
}   

onResume() 在您的应用处于状态 'running'

之前被调用

参考此 post - How can I detect user pressing HOME key in my activity? 已实现以下逻辑。

使用上面的 post 检测主页按钮按下并在首选项中存储一个标志。当通过第一个 OnRestart() 方法从最近的列表启动应用程序时,将被触发,因此检查主页按钮按下标志并启动特定的 activity.

    @Override
    protected void onPause() {
        // TODO Auto-generated method stub
        super.onPause();
        if (isApplicationSentToBackground(this)) {
            // Do what you want to do on detecting Home Key being Pressed
             preferences.setHomeButtonPressed(true);
        }

    }

    @Override
    protected void onRestart() {
        super.onRestart();
    // Do what you want to do on detecting app launching from recents section
        if (preferences.isHomeButtonPressed()) {
            Intent i = new Intent(this,
                    ParticularActivity.class);
            startActivity(i);
            preferences.setHomeButtonPressed(false);
        }

    }

    public static boolean isApplicationSentToBackground(final Context context) {
        ActivityManager am = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
        List<ActivityManager.RunningTaskInfo> tasks = am.getRunningTasks(1);
        if (!tasks.isEmpty()) {
            ComponentName topActivity = tasks.get(0).topActivity;
            if (!topActivity.getPackageName().equals(context.getPackageName())) {
                return true;
            }
        }
        return false;
    }