Android广播接收器

Question

我在我的应用程序中使用基于闹钟的应用程序我已经使用以下代码设置了闹钟。如果我创建闹钟意味着创建，但闹钟不会移动到广播接收器。我尝试了几次，但它不适合我。即使我已经正确地在android清单文件中添加了广播接收器。

1.设置报警类别：

public class Alertedit extends Activity { 

    boolean AlarmEnabled; 
    final static int RQS_1 = 1; 
    TimePicker myTimePicker; 

private SQLiteConnectornew loginDataBaseAdapter; 


     protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 

     setContentView(R.layout.activity_alertaddlist); 

    Button bt1 = (Button) findViewById(R.id.alerttime); 

     bt1.setOnClickListener(new OnClickListener() { 

      @Override 
      public void onClick(View v) { 
       // TODO Auto-generated method stub 
       openTimePickerDialog(false); 
      }});} 

      private void openTimePickerDialog(boolean is24r){ 
     Calendar calendar = Calendar.getInstance(); 

     timePickerDialog = new TimePickerDialog(
      Alertedit.this, 
      onTimeSetListener, 
      calendar.get(Calendar.HOUR_OF_DAY), 
      calendar.get(Calendar.MINUTE), 
      is24r); 
     timePickerDialog.setTitle("Set Alarm Time"); 

     timePickerDialog.show();} 

     OnTimeSetListener onTimeSetListener 
     = new OnTimeSetListener(){ 

     @Override 
     public void onTimeSet(TimePicker view, int hourOfDay, int minute) { 

      Calendar calNow = Calendar.getInstance(); 
      Calendar calSet = (Calendar) calNow.clone(); 

      calSet.set(Calendar.HOUR_OF_DAY, hourOfDay); 
      calSet.set(Calendar.MINUTE, minute); 
      calSet.set(Calendar.SECOND, 0); 
      calSet.set(Calendar.MILLISECOND, 0); 

      if(calSet.compareTo(calNow) <= 0){ 
       //Today Set time passed, count to tomorrow 
       calSet.add(Calendar.DATE, 1); 
      } 

      setAlarm(calSet); 
     } 

     private void setAlarm(Calendar targetCal) { 
      // TODO Auto-generated method stub 
      bt1.setText("" + targetCal.getTime()); 
      Log.d("set", "Alarm set"); 
      Intent intent = new Intent(Alertedit.this, AlarmReciever.class); 
      PendingIntent pendingIntent = PendingIntent.getBroadcast(Alertedit.this, RQS_1, intent, 0); 
      AlarmManager alarmManager = (AlarmManager)getSystemService(Context.ALARM_SERVICE); 
      alarmManager.set(AlarmManager.RTC_WAKEUP, targetCal.getTimeInMillis(), pendingIntent); 

     }}; 

2.Receiver类：

public class AlarmReciever extends BroadcastReceiver { 


@Override 
public void onReceive(Context context, Intent intent) { 
    try { 
     /* Display an alert */ 
     Log.e("value", "how are you??"); 
     Toast.makeText(context, "How are you?", Toast.LENGTH_LONG).show(); 
    } 
    catch (Exception r) { 
     Toast.makeText(context, "You were supposed to do something" 
       +" now but I can't retrieve what it was.", 
       Toast.LENGTH_SHORT).show(); 
     Log.e("ALARM_RECEIVER", r.toString()); 
    } 
    } 

}

3.Manifest文件：

<?xml version="1.0" encoding="utf-8"?> 
<manifest xmlns:android="http://schemas.android.com/apk/res/android" 
package="com.example.contactlist" 
android:versionCode="1" 
android:versionName="1.0" > 

<uses-sdk 
    android:minSdkVersion="7" 
    android:targetSdkVersion="17" /> 
<uses-permission android:name="android.permission.INTERNET"/> 

<application 
    android:allowBackup="true" 
    android:icon="@drawable/ic_launcher" 
    android:label="@string/app_name" 
    android:screenOrientation="portrait" 
    android:theme="@style/AppTheme" > 
    <activity 
     android:name="com.example.contactlist.Primemfrontpage" 

     android:label="@string/app_name" > 
     <intent-filter> 
      <action android:name="android.intent.action.MAIN" /> 

      <category android:name="android.intent.category.LAUNCHER" /> 
     </intent-filter> 
      <activity 
     android:name="com.example.contactlist.Login" 
     android:label="@string/app_name" > 
    </activity> 
      <activity 
     android:name="com.example.contactlist.Registration" 
     android:label="@string/app_name" > 
    </activity> 
    <activity 
     android:name="com.example.contactlistnew.Alertedit" 
     android:label="@string/app_name" 
     android:theme="@android:style/Theme.Translucent.NoTitleBar" > 
    </activity> 

    <receiver android:name="com.example.contactlistnew.AlarmReceiver"> 
    </receiver></application></manifest> 

Answer 1

看来你应该为你的添加意图过滤器ceiver，如下

<receiver android:name="com.example.contactlistnew.AlarmReceiver"> 
    <intent-filter> 
     <action android:name="android.alarm.demo.action" /> 
    </intent-filter> 
</receiver> 

Answer 2

从广播接收器必须读你的意图的消息，如在

import android.content.BroadcastReceiver; 
import android.content.Context; 
import android.content.Intent; 
import android.widget.Toast; 

public class MyBroadcastReceiver extends BroadcastReceiver{ 

    @Override 
    public void onReceive(Context context, Intent intent) { 
     // TODO Auto-generated method stub 

     // Extract data included in the Intent 
     CharSequence intentData = intent.getCharSequenceExtra("message"); 
     Toast.makeText(context, "Received the Intent's message: "+intentData, Toast.LENGTH_LONG).show(); 
    } 

}