Question

我的主要活动有一个按钮，用于打开您提交数据的表单活动。提交数据后，Button将消失。如何让它在当天的每个小时开始出现？

例如，如果我在晚上7:05提交数据，该按钮将消失，直到晚上8点。当我按下按钮再次提交数据时，该按钮将消失，直到晚上9点，依此类推。

Answer 1

提交数据时获取当前时间戳并将其存储在sharedPref中。当您启动活动时，请检查sharedPref并将其与设备的当前时间进行比较。

Answer 2

尝试使用后台服务并在1小时后设置通知间隔按钮单击后按钮启动服务，而不是使用此后台服务进行任何操作

BackgroundService.java

public class BackgroundService extends Service {

public static final int notify = 100000;  //interval between two services(Here Service run every 1 Minute)

private Timer mTimer = null;    //timer handling

Context context;

ScheduledExecutorService scheduleTaskExecutor;

View view;

Handler mHandler = new Handler();

/** indicates how to behave if the service is killed */
int mStartMode;

/** interface for clients that bind */
IBinder mBinder;

/** indicates whether onRebind should be used */
boolean mAllowRebind;

/** Called when the service is being created. */
@Override
public void onCreate() {
    super.onCreate();
    context = getApplicationContext();

    Toast.makeText(this, "Service is created", Toast.LENGTH_SHORT).show();

    if (mTimer != null) // Cancel if already existed
        mTimer.cancel();
    else
        mTimer = new Timer();   //recreate new
    mTimer.scheduleAtFixedRate(new TimeDisplay(), 0, notify);   //Schedule task
}

/** The service is starting, due to a call to startService() */
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
    return super.onStartCommand(intent, flags, startId);

}

@Override
public IBinder onBind(Intent intent){
    return null;
}

/** Called when all clients have unbound with unbindService() */
@Override
public boolean onUnbind(Intent intent) {
    return mAllowRebind;
}

/** Called when a client is binding to the service with bindService()*/
@Override
public void onRebind(Intent intent) {

}

/** Called when The service is no longer used and is being destroyed */
@Override
public void onDestroy() {
    super.onDestroy();
    mTimer.cancel();    //For Cancel Timer
  Toast.makeText(this, "Service Destroyed", Toast.LENGTH_LONG).show();
}

//class TimeDisplay for handling task
class TimeDisplay extends TimerTask {
    @Override
    public void run() {
        // run on another thread
        mHandler.post(new Runnable() {
            @Override
            public void run() {
        // Toast.makeText(this, "Service Start",Toast.LENGTH_LONG).show();
            }
        });
    }
}

}

AndroidManifest.xml
<service android:name=".BackgroundService.KametSportsEventsService" android:enabled="true" />

//开始后台服务

startService（new Intent（getBaseContext（），BackgroundService.class））;

//停止后台服务

stopService（new Intent（getBaseContext（），BackgroundService.class））;

每小时开始时按钮是否可见？

2 个答案: