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我想要一个简单的Toast消息“Helloo everyone”在每天11:30 a.m显示。为此,我有两个类MainActivity和AlarmReceiver 我已经尝试了很多解决方案但没有找到答案。 请帮帮我。在每天的固定时间,Toast消息应显示在Android
代码: -
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Calendar cur_cal = new GregorianCalendar();
cur_cal.setTimeInMillis(System.currentTimeMillis());//set the current time and date for this calendar
Calendar cal = new GregorianCalendar();
cal.add(Calendar.DAY_OF_YEAR, cur_cal.get(Calendar.DAY_OF_YEAR));
cal.set(Calendar.HOUR_OF_DAY, 11);
cal.set(Calendar.MINUTE, 30);
cal.set(Calendar.SECOND, cur_cal.get(Calendar.SECOND));
cal.set(Calendar.MILLISECOND, cur_cal.get(Calendar.MILLISECOND));
cal.set(Calendar.DATE, cur_cal.get(Calendar.DATE));
cal.set(Calendar.MONTH, cur_cal.get(Calendar.MONTH));
Intent intent = new Intent(MainActivity.this, AlarmReceiver.class);
PendingIntent pintent = PendingIntent.getService(MainActivity.this, 0, intent, 0);
AlarmManager alarm = (AlarmManager)getSystemService(Context.ALARM_SERVICE);
alarm.setRepeating(AlarmManager.RTC_WAKEUP, cal.getTimeInMillis(), 30*1000, pintent);
}
}
AlarmReceiver.java
public class AlarmReceiver extends BroadcastReceiver {
int MID = 0;
@Override
public void onReceive(Context context, Intent intent) {
// TODO Auto-generated method stub
// For our recurring task, we'll just display a message
Toast.makeText(context, "Hello everyone", Toast.LENGTH_SHORT).show();
}
}
Mainfest
<uses-permission android:name="com.android.alarm.permission.SET_ALARM"/>
<receiver android:name="com.example.alarmmanagernotifcation.AlarmReceiver"/>
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN"/>
<category android:name="android.intent.category.LAUNCHER"/>
</intent-filter>
</activity>
<receiver android:name=".AlarmReceiver"></receiver>
</application>
我已经试过您的解决方案,但它不工作 – Shivangi
任何错误。请发布日志。 – AndroidHacker
没有什么事情发生。 – Shivangi