OnReceive無法正常工作

Question

我的onreceive調用沒有調用，所以我的方法不起作用。 這是我的清單：

<?xml version="1.0" encoding="utf-8"?> 
<manifest xmlns:android="http://schemas.android.com/apk/res/android" 
package="com.example.hobbs.homework_4"> 

    <uses-permission android:name="android.permission.INTERNET" /> 
    <uses-permission android:name="android.permission.WRITE_SMS"/> 
    <uses-permission android:name="android.permission.RECEIVE_SMS"/> 
    <uses-permission android:name="android.permission.READ_SMS"/> 

    <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" 
      android:screenOrientation="landscape"> 
      <intent-filter> 
       <action android:name="android.intent.action.MAIN" /> 

       <category android:name="android.intent.category.LAUNCHER" /> 
      </intent-filter> 
     </activity> 

     <receiver 
      android:name=".MyBroadcastReceiver" 
      android:enabled="true" 
      android:exported="true"> 
      <intent-filter> 
       <action 
        android:name="android.provider.Telephony.SMS_RECEIVED"/> 
      </intent-filter> 
     </receiver> 
    </application> 

</manifest> 

這是我的廣播接收器的方法：

public class MyBroadcastReceiver extends BroadcastReceiver { 
public MyBroadcastReceiver() { 
} 

@Override 
public void onReceive(Context context, Intent intent) { 
    // TODO: This method is called when the BroadcastReceiver is receiving 
    // an Intent broadcast. 

    Bundle bundle = intent.getExtras(); 

    if(bundle != null){ 
     Object[] messages = (Object[]) bundle.get("pdus"); 
     SmsMessage[] sms = new SmsMessage[messages.length]; 

     for (int n = 0; n < messages.length; n++){ 
      sms[n] = SmsMessage.createFromPdu((byte []) messages[n]); 
     } 
     for(SmsMessage s: sms){ 
      Log.d("MY_BROADCAST-RECEIVER", s.getMessageBody()); 
     } 

     Intent startMyActivityIntent = new Intent(context.getApplicationContext(),MainActivity.class); 
     startMyActivityIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 
     context.startActivity(startMyActivityIntent); 
    } 
    throw new UnsupportedOperationException("Not yet implemented"); 
    } 
} 

這是我的主要活動：

public class MainActivity extends AppCompatActivity { 

ListView list; 
WebView webView; 
List<String> sites = Arrays.asList("https://www.google.com", "https://www.yahoo.com", "https://www.apple.com"); 
String [] url = {"https://www.google.com", "https://www.yahoo.com", "https://www.apple.com"}; 

MyBroadcastReceiver receiver; 

@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_main); 

    list = (ListView)findViewById(R.id.listview); 
    final MyListAdapter adapter = new MyListAdapter(this, sites); 
    list.setAdapter(adapter); 
    list.setDividerHeight(5); 

    webView = (WebView)findViewById(R.id.webview); 
    webView.setWebViewClient(new WebViewClient(){}); 

    list.setOnItemClickListener(new AdapterView.OnItemClickListener(){ 
     @Override 
     public void onItemClick(AdapterView<?> adapterView, View view, int position, long id){ 
      Toast.makeText(getApplicationContext(), sites.get(position), Toast.LENGTH_SHORT).show(); 
      webView.loadUrl("https://www.google.com"); 
      webView.loadUrl(url[position]); 

     } 
    }); 

    receiver = new MyBroadcastReceiver(); 
    this.sendBroadcast(new Intent("MyBroadcastReceiver")); 
    IntentFilter filter = new IntentFilter(); 
    registerReceiver(receiver,filter); 
    } 
} 

此外，如何將SMS添加到我的默認清單？

這裏是我的陣列適配器：

public class MyListAdapter extends ArrayAdapter<String> { 
    private Activity context_; 
    private List<String> sites; 

    //constructor 
    public MyListAdapter(Activity context, List<String> sites){ 
     super(context,R.layout.row,sites); 
     context_ = context; 
     this.sites = sites; 


    public View getView (int position, View convertView, ViewGroup parent){ 
     if(convertView == null){ 
      LayoutInflater inflater = context_.getLayoutInflater(); 
      convertView = inflater.inflate(R.layout.row,null); 
     } 

     ViewHolder holder = (ViewHolder) convertView.getTag(); 

     if(holder == null){ 
      holder = new ViewHolder(convertView); 
      holder.tv_link.setText(sites.get(position)); 
     } 
     else{ 
      holder.tv_link.setText(sites.get(position)); 
     } 
     return convertView; 
    } 

    private class ViewHolder{ 
     TextView tv_link; 
     public ViewHolder(View row){ 
      tv_link = (TextView) row.findViewById(R.id.tv_link); 
     } 
    } 
} 

Answer 1

動作不你的意圖過濾器定義，先註冊接收器，然後發送廣播。

receiver = new MyBroadcastReceiver(); 
IntentFilter filter = new IntentFilter("MyBroadcastReceiver"); 
registerReceiver(receiver,filter); 
this.sendBroadcast(new Intent("MyBroadcastReceiver"));