Question

我在android-studio应用程序上发出警报时遇到了一些麻烦。首先，我有一个方法，使用按钮（onClick）调用，然后我在此创建alarmManager，并尝试调用类AlarmReceiver来响铃。问题是程序运行永远不会进入我的AlarmReceiver类，我不明白为什么。我来告诉你代码：

public void sendMessage(View v) {

    long time = currentTimeMillis();
    Toast.makeText(this, "ALARM ON", Toast.LENGTH_SHORT).show();
    alarmManager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
    Intent intent = new Intent(MainActivity.this, AlarmReceiver.class);

    pendingIntent = PendingIntent.getBroadcast(this, 0, intent, 0);

    Calendar calendar = Calendar.getInstance();
    calendar.setTimeInMillis(System.currentTimeMillis());
    calendar.set(Calendar.HOUR_OF_DAY, 14);

    calendar.set(Calendar.MINUTE, 58);

    Toast.makeText(MainActivity.this, "bjr", Toast.LENGTH_SHORT).show();

    alarmManager.set(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(),pendingIntent);}

这是单击按钮时调用的方法，现在这是AlarmReceiver：

public class AlarmReceiver extends WakefulBroadcastReceiver
{


@Override
public void onReceive(Context context, Intent intent)
{
    Toast.makeText(context, "Alarm! Wake up! Wake up!", Toast.LENGTH_LONG).show();
    Uri alarmUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_ALARM);
    if (alarmUri == null)
    {
        alarmUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
    }
    Ringtone ringtone = RingtoneManager.getRingtone(context, alarmUri);
    ringtone.play();
}
}

因此，当我运行应用程序时，然后单击按钮，打印“ALARM ON”和“bjr”字样，但是AlarmReceiver中的文字“Alarm！Wake up！”永远不会打印，所以应用程序永远不会进入这个类，我需要知道为什么。

我的机器人清单：

`<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.beantunes.myapplication">


    <uses-feature
        android:name="android.hardware.sensor.accelerometer"
        android:required="true"/>
    <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/>
    <uses-permission android:name="android.permission.WAKE_LOCK" />
    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity android:name=".vue.MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
        </activity>
       <receiver android:name=".vue.AlarmReceiver"
        android:enabled="false">
        <intent-filter>
            <action android:name="android.intent.action.BOOT_COMPLETED"></action>
        </intent-filter>
    </receiver>
    <activity android:name=".vue.DisplayMessageActivity"></activity>
</application>

`

安排闹钟Android应用

0 个答案: