Question

我是android的新手。我正在创建一个应用程序，我必须在单击后禁用该按钮，并在5分钟后再次启用它。即使应用程序关闭后，倒计时器仍应继续。任何帮助表示赞赏。提前致谢！

Answer 1

您可以通过以下代码将时间存储在共享偏好中。

 SharedPreferences  settings = c.getSharedPreferences(PREFS_NAME, 1);
 SharedPreferences.Editor editor = settings.edit();
 editor.putString("click_time", your_time);

每当需要比较时，只需将当前时间与优先存储的时间进行比较。检查时间差是否小于5分钟。

从偏好中抽出时间：

   SharedPreferences  settings = c.getSharedPreferences(PREFS_NAME, 1);
   String storedTime=settings.getString("clic_time", "");

分钟：

   Date current, Date previous;
   long diff = current.getTime() - previous.getTime();
   long minutes = diff / (60 * 1000);

要显示计时器，当应用程序来自后台时，您可以通过使用2次之间的差异从偏好中获取时间并启动计时器。

Answer 2

1）创建服务并在其中加入计时器代码

2）在服务中，在你的时间完成广播后的意图

3）在您的活动中再次编写广播接收器和广播接收器启用按钮。

关闭app后运行服务：How to keep a service running in background even after user quits the app?

从服务到活动的发送意图请查看：send intent from service to activity

一些经过测试的代码

1）创建服务：

var myarr = ['test', 'tost', 'aww'];
console.log(myarr.indexOf('tost')); // returns 1
console.log(myarr.indexOf('tosts')); // returns -1 (value not found)

2）你的活动

-create action string

public class TimeService extends IntentService {
    public TimeService() {
        super("TimeService");
    }

@Override
protected void onHandleIntent(Intent intent) {

   //Your Time Code

    //broadcast intent in your app 
    Intent RTReturn = new Intent(MainActivity.RECEIVE);
    RTReturn.putExtra("state", "done");
    LocalBroadcastManager.getInstance(this).sendBroadcast(RTReturn);
}

- 创建BroadcastManager

//Your activity will respond to this action String
public static final String RECEIVE = "TIMING";

- 创建broadcastReceiver

private LocalBroadcastManager bManager;

onCreate（）

中的

-put intent过滤器

private BroadcastReceiver bReceiver = new BroadcastReceiver() {
    @Override
    public void onReceive(Context context, Intent intent) {
        if(intent.getAction().equals(RECEIVE)) {
            String serviceString = intent.getStringExtra("state");
            if(serviceString.equals("done"))
                 // enable your button 
                 btnEnable();
        }
    }
};

点击

将其添加到按钮中

 @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        //make an intent filter
        bManager = LocalBroadcastManager.getInstance(this);
        IntentFilter intentFilter = new IntentFilter();
        intentFilter.addAction(RECEIVE);
        bManager.registerReceiver(bReceiver, intentFilter);


     }

最后记住两件事：

首先 - ＆gt;将服务添加到您的清单

秒 - ＆gt;在onDestroy（）

中取消注册广播接收器

Answer 3

private long mLastClickTime = 0;

public static final long MAX_CLICK_INTERVAL = 1000; // here you can pass the time interval you want the user to wait for the next click

// and paste the below code on button click 

if (SystemClock.elapsedRealtime() - mLastClickTime < MAX_CLICK_INTERVAL) {
            return;
}
mLastClickTime = SystemClock.elapsedRealtime();

Answer 4

尝试处理程序

Handler handler = new Handler();
Runnable runnable = new Runnable() {
    @Override
    public void run() {

        // this will disable your button
        yourButton.setEnabled(false);
    }
};


yourButton.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {

            // wait for 5 minutes
            handler.postDelayed(runnable, 5*60*1000);

        }
    });

如何在Android中单击5分钟后禁用按钮

4 个答案: