無法讓AlarmManager在Galaxy III或模擬器上工作

Question

我瀏覽了兩個數十個樣本，文章等，試圖瞭解爲什麼我的代碼無法工作。我有一個非常簡單的廣播監聽器，我正在嘗試與一個報警管理器進行通話。這裏是我的代碼：

主要活動的onCreate和功能（MapsActivity.java）

@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    FacebookSdk.sdkInitialize(getApplicationContext()); 
    setContentView(R.layout.activity_maps); 

    setUpMapIfNeeded(); 
    mGoogleApiClient = new GoogleApiClient.Builder(this) 
      .addConnectionCallbacks(this) 
      .addOnConnectionFailedListener(this) 
      .addApi(LocationServices.API) 
      .build(); 
    // Create the LocationRequest object 
    mLocationRequest = LocationRequest.create() 
      .setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY) 
      .setInterval(240 * 1000)  // 10 seconds, in milliseconds 
      .setFastestInterval(80 * 1000); // 1 second, in milliseconds 
    Button clickButton = (Button) findViewById(R.id.search_for_beer); 
    clickButton.setOnClickListener(new View.OnClickListener() { 

     @Override 
     public void onClick(View v) { 
      Intent bar = new Intent(MapsActivity.this, SearchBeer.class); 
      bar.putExtra("tloc", Double.toString(location.getLongitude()) + "," + Double.toString(location.getLatitude())); 
      startActivity(bar); 
     } 
    }); 
    startNotes(); 
} 

public void startNotes() { 

    Calendar cal = Calendar.getInstance(); 

    Intent intent = new Intent(MapsActivity.this, BeerNotes.class); 
    PendingIntent pintent = PendingIntent.getService(MapsActivity.this, 12345, intent, 0); 

    AlarmManager alarm = (AlarmManager) getSystemService(Context.ALARM_SERVICE); 

    alarm.setRepeating(AlarmManager.RTC_WAKEUP, SystemClock.elapsedRealtime() + (5 * 1000), 5 * 1000, pintent); 

} 

我的廣播接收器......我註釋掉的代碼，我會想要做，只是想獲得一個現在登錄，我什麼都沒有。

package com.tapmap.app.tapmapapp; 
import android.content.BroadcastReceiver; 
import android.content.Context; 
import android.content.Intent; 
import android.util.Log; 

import java.io.InputStream; 
import java.net.HttpURLConnection; 

public class BeerNotes extends BroadcastReceiver { 

private Exception exception; 
private HttpURLConnection urlConnection; 
public InputStream in; 
private String total; 
private static final long REPEAT_TIME = 1000 * 30; 
private static final String APP_TAG = "LOG: "; 
private static final int EXEC_INTERVAL = 20 * 1000; 

@Override 
public void onReceive(Context context, Intent intent) { 

    Log.i(APP_TAG, "onReceive() called"); 
    /* 
    try { 
     URL url = new URL("http://fltapmap.com/notes.php"); 
     try { 
      urlConnection = (HttpURLConnection) url.openConnection(); 
      urlConnection.connect(); 
      in = new BufferedInputStream(urlConnection.getInputStream()); 
      try { 
       BufferedReader r = new BufferedReader(new InputStreamReader(in)); 
       String line; 
       total = ""; 
       while ((line = r.readLine()) != null) { 
        total += line + "\n"; 
       } 
       urlConnection.disconnect(); 
       Log.i("TOTAL NOTES", total); 
      } catch(IOException ioe) { 
       Log.i("MALFORMED1", ioe.getMessage()); 
       urlConnection.disconnect(); 
      } 
     } catch (IOException ioe) { 
      Log.i("MALFORMED2", ioe.getMessage()); 
      urlConnection.disconnect(); 
     } 
    } catch (MalformedURLException ioex) { 
     Log.i("MALFORMED3", ioex.getMessage()); 
    } 
    */ 
} 
} 

清單

<?xml version="1.0" encoding="utf-8"?> 
<manifest xmlns:android="http://schemas.android.com/apk/res/android" 
package="com.tapmap.app.tapmapapp" > 

<uses-permission android:name="android.permission.INTERNET" /> 
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" /> 
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /> 
<uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES" /> 
<uses-permission android:name="android.permission.INTERACT_ACROSS_USERS_FULL" /> 

<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" /> 
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" /> 
<uses-permission android:name="android.permission.GET_ACCOUNTS" /> 
<uses-permission android:name="android.permission.WAKE_LOCK" /> 

<permission 
    android:name="com.javapapers.android.permission.C2D_MESSAGE" 
    android:protectionLevel="signature" /> 

<uses-permission android:name="com.javapapers.android.permission.C2D_MESSAGE" /> 
<uses-permission android:name="com.google.android.c2dm.permission.RECEIVE" /> 
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" /> 
<uses-permission android:name="android.permission.VIBRATE" /> 
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/> 

<application 
    android:allowBackup="true" 
    android:icon="@mipmap/ic_launcher" 
    android:label="@string/app_name" 
    android:theme="@style/AppTheme" > 
    <meta-data 
     android:name="com.facebook.sdk.ApplicationId" 
     android:value="@string/facebook_app_id" /> 
    <meta-data 
     android:name="com.google.android.gms.version" 
     android:configChanges="orientation|screenSize" 
     android:screenOrientation="portrait" 
     android:value="@integer/google_play_services_version" /> 
    <meta-data 
     android:name="com.google.android.maps.v2.API_KEY" 
     android:value="AIzaSyAksheZLMAALUfLHKWOsfTFCz7iP_KwpCE" /> 

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

      <category android:name="android.intent.category.LAUNCHER" /> 
     </intent-filter> 
    </activity> 
    <activity 
     android:name=".BarBrewry" 
     android:configChanges="orientation|keyboardHidden|screenSize" 
     android:label="@string/title_activity_bar_brewry" 
     android:theme="@style/FullscreenTheme" > 
    </activity> 
    <activity 
     android:name=".SearchBeer" 
     android:configChanges="orientation|keyboardHidden|screenSize" 
     android:label="@string/title_activity_search_beer" 
     android:theme="@style/FullscreenTheme" > 
    </activity> 
    <activity 
     android:name=".ViewBeer" 
     android:configChanges="orientation|keyboardHidden|screenSize" 
     android:label="@string/title_activity_search_beer" 
     android:theme="@style/FullscreenTheme" > 
    </activity> 
    <activity 
     android:name="com.facebook.FacebookActivity" 
     android:configChanges="keyboard|keyboardHidden|screenLayout|screenSize|orientation" 
     android:label="@string/app_name" 
     android:theme="@android:style/Theme.Translucent.NoTitleBar" /> 

    <provider 
     android:name="com.facebook.FacebookContentProvider" 
     android:authorities="com.facebook.app.FacebookContentProvider934301593259187" 
     android:exported="true" /> 

    <receiver 
     android:name="com.tapmap.app.tapmapapp.BeerNotes"></receiver> 
</application> 

</manifest> 

Answer 1

變化PendingIntent.getService()到PendingIntent.getBroadcast()

編輯

我發現在你的BroadcastReceiver註釋代碼將努力使網絡請求。這會導致你的應用程序崩潰，出現NetworkOnMainThread異常。我建議您創建一個延伸IntentService的課程，並在onHandleIntent()之內執行您的網絡操作。在這種情況下，您可以使用PendingIntent.getService()將意向轉到該服務。