具有挂起意图的警报管理器:设置时间未正确注册

Question

我正在尝试使用alarmManager和挂起的意图来允许我的用户设置在我的应用程序中发生某个事件的时间。但是，BroadcastReceiver 是在 onClick 事件结束时启动的，而不是在我刚刚设置的预期时间启动的。这必须很简单，但我没有看到它。代码如下。蒂亚。

public class MainActivity extends Activity implements View.OnClickListener {
PendingIntent pendingIntent;
BroadcastReceiver broadcastReceiver;
AlarmManager alarmManager;
TextView tvHours, tvMins;
int iHours = 23;
int iMins = 15;
int iSecs = 0;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    initiateBroadcastReceiver();
    findViewById(R.id.the_button).setOnClickListener(this);
    tvHours = (TextView) findViewById(R.id.Hours);
    String szHours = Integer.toString(iHours);
    tvHours.setText(szHours);
    tvMins = (TextView) findViewById(R.id.Mins);
    String szMins = Integer.toString(iMins);
    tvMins.setText(szMins);
}
private void initiateBroadcastReceiver() {
    broadcastReceiver = new BroadcastReceiver() {
        @Override
        public void onReceive(Context context, Intent intent) {
            Toast.makeText(MainActivity.this, "This is the alarm event!", Toast.LENGTH_LONG).show();
        }
    };
    registerReceiver(broadcastReceiver, new IntentFilter("pending event"));
    pendingIntent = PendingIntent.getBroadcast( this, 0, new Intent("pending event"), 0 );
    //PendingIntent alarmIntent = PendingIntent.getBroadcast(context, 0, activate, 0);
    alarmManager = (AlarmManager)(this.getSystemService( Context.ALARM_SERVICE ));
}
@Override
public void onClick(View v) {
    String szHours=tvHours.getText().toString();
    int iHourTemp = Integer.parseInt(szHours);
    if (iHourTemp < 24){
        iHours = iHourTemp;
    }else{
        Toast.makeText(MainActivity.this, "Please enter an hour value between 0 and 23.", Toast.LENGTH_LONG).show();
    }
    String szMins=tvMins.getText().toString();
    int iMinTemp = Integer.parseInt(szMins);
    if (iMinTemp < 60){
        iMins = iMinTemp;
    }else{
        Toast.makeText(MainActivity.this, "Please enter an minute value between 0 and 60.", Toast.LENGTH_LONG).show();
    }
    Calendar cal = Calendar.getInstance();
    cal.set(Calendar.HOUR_OF_DAY, iHours);
    cal.set(Calendar.MINUTE, iMins);
    cal.set(Calendar.SECOND, iSecs);
    alarmManager.set(AlarmManager.RTC_WAKEUP, cal.getTimeInMillis(), pendingIntent);
    Toast.makeText(MainActivity.this, "Event is now set for " +iHours+":"+iMins, Toast.LENGTH_LONG).show();
}
@Override
protected void onDestroy() {
    alarmManager.cancel(pendingIntent);
    unregisterReceiver(broadcastReceiver);
    super.onDestroy();
  }
}

Answer 1

您必须在 android 清单文件中授予接收者权限和服务权限。 您可以对警报管理器执行此步骤。

步骤1：你做报警接收器类

public class AlarmReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
    Intent service1 = new Intent(context, AlarmService.class);
    Bundle extras = intent.getExtras();
    String notification_msg = extras.getString("bookName");
    service1.putExtra("bookName",notification_msg);
    context.startService(service1);
}
}

步骤2：你做新的服务等级，它的名字叫报警服务

public class AlarmService extends IntentService {
private static final int NOTIFICATION_ID = 1;
private NotificationManager notificationManager;
private PendingIntent pendingIntent;

public AlarmService() {
    super("AlarmService");
}

@Override
public int onStartCommand(Intent intent, int flags, int startId) {
    return super.onStartCommand(intent, flags, startId);
}
@Override
protected void onHandleIntent(Intent intent) {
    // don't notify if they've played in last 24 hr
    Context context = this.getApplicationContext();
    notificationManager = (NotificationManager)context.getSystemService(Context.NOTIFICATION_SERVICE);
    Intent mIntent = new Intent(this, MainActivity.class);
    Bundle bundle = new Bundle();
    bundle.putString("", "test");
    mIntent.putExtras(bundle);
    pendingIntent = PendingIntent.getActivity(context, 0, mIntent, PendingIntent.FLAG_UPDATE_CURRENT);
    Bundle extras = intent.getExtras();
    String notification_msg = extras.getString("bookName");
    NotificationCompat.Builder builder = new NotificationCompat.Builder(this);
    builder.setContentIntent(pendingIntent)
            .setSmallIcon(R.mipmap.logo_home)
            .setLargeIcon(BitmapFactory.decodeResource(getResources(), R.mipmap.logo_home))
            .setContentTitle(getResources().getString(R.string.app_name))
            .setDefaults(Notification.DEFAULT_SOUND).setAutoCancel(true)
            .setContentText(notification_msg);
    notificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
    notificationManager.notify(NOTIFICATION_ID, builder.build());

}
}

步骤3 要设置呼叫报警的地方，执行此代码

      Calendar calendar = Calendar.getInstance();
calendar.set(Calendar.DAY_OF_WEEK, lDay);
            calendar.set(calendar.HOUR_OF_DAY, Integer.parseInt(hours[0]));
            calendar.set(Calendar.MINUTE, Integer.parseInt(hours[1]));
            calendar.set(Calendar.SECOND, 0);
            calendar.set(Calendar.MILLISECOND, 0);
            Date date = calendar.getTime();
            System.out.println(calendar.getTime());
            long sdl = calendar.getTimeInMillis();
            Intent alarmIntent = new Intent(context, AlarmReceiver.class);
            alarmIntent.setData(Uri.parse("custom://" + Your Passing data));
                            PendingIntent pendingIntent = PendingIntent.getBroadcast(context, index, alarmIntent, 0);
            alarmManager.set(AlarmManager.RTC, sdl, pendingIntent);
            index++; 

Step4：像这样在清单文件中授予权限

 <receiver android:name="com.sk.yman.utils.AlarmReceiver"  android:enabled="true"/>
    <service android:name="com.sk.yman.utils.AlarmService" />

如需更多帮助，请遵循此示例

http://javatechig.com/android/repeat-alarm-example-in-android