Question

我想更新我的应用数据库中的表格，这只有在我重新启动应用时才有可能。因此，在用户未与应用程序交互或用户将应用程序置于后台的一段时间后，是否可以以编程方式退出或重新启动Android应用程序。

Answer 1

只是扩展了这个基本活动而不是AppCompatActivity

public class BaseAppCompactActivity extends AppCompatActivity {
       //activity restart this timeout
        public static final long DISCONNECT_TIMEOUT = 14400000; // 5 min = 5 * 60 * 1000 ms


        private Handler disconnectHandler = new CustomHandler();

        private Runnable disconnectCallback = new Runnable() {
            @Override
            public void run() {
                // Perform any required operation on disconnect
                finishAffinity();
            }
        };

        public void resetDisconnectTimer(){
            disconnectHandler.removeCallbacks(disconnectCallback);
            disconnectHandler.postDelayed(disconnectCallback, DISCONNECT_TIMEOUT);
        }

        public void stopDisconnectTimer(){
            disconnectHandler.removeCallbacks(disconnectCallback);
        }

        @Override
        public void onUserInteraction(){
            resetDisconnectTimer();
        }

        @Override
        public void onResume() {
            System.out.println("Base Activity Resume called");
            super.onResume();
            resetDisconnectTimer();
        }

        @Override
        public void onStop() {
            System.out.println("Base Activity Stop called");
            super.onStop();
            stopDisconnectTimer();
        }
        static class CustomHandler extends Handler {
            public void handleMessage(Message msg) {
            }
        }

        @Override
        public void onBackPressed() {
            super.onBackPressed();
        }
    }

当用户没有与app交互时，如何退出或重新启动Android应用程序

1 个答案: