Android 广播（内部类）

1.广播定义在一个单独的文件中

源码：

public class MessageReceiver extends BroadcastReceiver{

    @Override
    public void onReceive(Context context, Intent intent) {
        // TODO Auto-generated method stub
        if(intent.getAction().equals("android.provider.Telephony.SMS_RECEIVED")){

        }
    }
}

在Manifest中注册：

<receiver android:name=".MessageReceiver">
            <intent-filter>
                <action android:name="android.provider.Telephony.SMS_RECEIVED"/>
            </intent-filter>
</receiver>

使用代码注册：

//生成广播处理
MessageReceiver  smsBroadCastReceiver = new MessageReceiver ();
//实例化过滤器并设置要过滤的广播
IntentFilter intentFilter = new IntentFilter();
intentFilter.addAction("android.provider.Telephony.SMS_RECEIVED");  

//注册广播
this.registerReceiver(smsBroadCastReceiver, intentFilter);  

注销广播：

unregisterReceiver(smsBroadCastReceiver);

2.广播是内部类

public class SettingForSMS extends PreferenceActivity{

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        addPreferencesFromResource(R.layout.sms_setting);
    }

    public static class MessageChangeReceiver extends BroadcastReceiver {
        @Override
        public void onReceive(Context context, Intent intent) {
            // TODO Auto-generated method stub
            Log.i(tag, "onReceive");
        }
    }
}

注意定义的过程中必须声明为static，不然会找不到

在Manifest中注册：

<receiver android:name=".SettingForSMS$MessageChangeReceiver">
            <intent-filter>
                <action android:name="com.ginwave.message_changed"/>
            </intent-filter>
</receiver>

注意内部类使用$符号而不是.，使用.会出现类找不到异常

在程序内注册，register是放在onCreate中，unregister是放在onDestroy中。

smsBroadCastReceiver = new MessageChangeReceiver ();
        //实例化过滤器并设置要过滤的广播
        IntentFilter intentFilter = new IntentFilter();
        intentFilter.addAction("com.ginwave.message_changed");  

        //注册广播
        this.registerReceiver(smsBroadCastReceiver, intentFilter); 

unregisterReceiver(smsBroadCastReceiver);

注意：如果使用getResource()方法，要使用context.getResource()