Android中BroadcastReceiver使用總結

Android中BroadcastReceiver使用分為動態註冊BroastcastReceiver ，靜態註冊BroastcastReceiver

1、動態註冊BroastcastReceiver。

定義BroadcastReceiver：

                private BroadcastReceiver bcr1 = new BroadcastReceiver() { @Overridepublic void onReceive(Context context, Intent intent) {// TODO Auto-generated method stub String action = intent.getAction();           Toast.makeText(context, "動態:"+action, 1000).show();  }       }; 

 註冊registerReceiver(bcr1, new IntentFilter(ACTION_1));代碼如下。關鍵代碼是註冊代碼registerReceiver(bcr1, new IntentFilter(ACTION_1))，其他是一些簡單的按鈕， 及綁定的Click事件。

 Button btn1,btn2,btn3;   static final String ACTION_1 = "com.example.broadcastreceiverdemo.ACTION_1";   static final String ACTION_2 = "com.example.broadcastreceiverdemo.ACTION_2";   static final String ACTION_3 = "com.example.broadcastreceiverdemo.ACTION_3";  @Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);btn1 = (Button)this.findViewById(R.id.button1);btn1.setOnClickListener(new ClickEvent());btn2 = (Button)this.findViewById(R.id.button2);btn2.setOnClickListener(new ClickEvent());btn3 = (Button)this.findViewById(R.id.button3);btn3.setOnClickListener(new ClickEvent());registerReceiver(bcr1, new IntentFilter(ACTION_1));}

 發送廣播

  class ClickEvent implements OnClickListener {  @Override  public void onClick(View v) {  // TODO Auto-generated method stub  if(v == btn1)  {  Intent intent = new Intent(ACTION_1);  sendBroadcast(intent);  }  if(v == btn2)  {  Intent intent = new Intent(ACTION_2);  sendBroadcast(intent);  }  if(v == btn3)  {  IntentFilter filter = new IntentFilter();  filter.addAction(Intent.ACTION_BATTERY_LOW);  filter.addAction(ACTION_3);    registerReceiver(bcr2, new IntentFilter(ACTION_3));    Intent intent = new Intent(ACTION_3);  intent.putExtra("Conuntry", "China");  intent.putExtra("City", "ShangHai");  sendBroadcast(intent);  }  }

   其中 v == btn1為發送至內部動態註冊的BroadcastReceiver;

       v == btn2為發送至內部靜態註冊的BroadcastReceiver;

　　 v == btn3為發送至系統級內部動態註冊BroadcastReceiver(bt1和bt3基本一樣，只是稍微加了addAction以及Intent的putExtra);

 

2 靜態註冊BroastcastReceiver。靜態註冊更要煩些，要在Androidmanifest.xml中註冊。

    <application        android:allowBackup="true"        android:icon="@drawable/ic_launcher"        android:label="@string/app_name"        android:theme="@style/AppTheme" >        <receiver android:name="cls2">            <intent-filter>                <action android:name="com.example.broadcastreceiverdemo.ACTION_2"></action>            </intent-filter>        </receiver>        <activity            android:name="com.example.broadcastreceiverdemo.MainActivity"            android:label="@string/app_name" >            <intent-filter>                <action android:name="android.intent.action.MAIN" />                <category android:name="android.intent.category.LAUNCHER" />            </intent-filter>        </activity>    </application>

 並且要實現一個類繼承BroadcastReceiver

public class cls2 extends BroadcastReceiver{@Overridepublic void onReceive(Context context, Intent intent) {// TODO Auto-generated method stubString action = intent.getAction();      Toast.makeText(context, "靜態:"+action, 1000).show();  }}