BroadcastReceiver广播接听器的初步认识，动态注册，静态注册(1)

BroadcastReceiver广播接听器的初步认识，动态注册，静态注册(1)
1、静态注册，在清单文件AndroidMinifest中注册，静态注册的广播只要应用一安装，并且该应用至少启动过一次，该广播会一直有效
2、动态注册，一般在Activity的onCreate（）方法中注册，动态注册的广播在Activity停止运行后也将解除注册，这时广播接收器不能继续收到外部发来的广播
清单文件注册：
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="project.wgc.mybroadcastreceiver01" >
 
    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/AppTheme" >
        <activity android:name=".MainActivity" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
 
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
//清单文件注册
        <receiver android:name=".MyBroadcastReceiver">
            <intent-filter>
                <action android:name="android.intent.action.NEW_OUTGOING_CALL"></action>
            </intent-filter>
        </receiver>
    </application>
 
</manifest>
 
代码中动态注册：
public class
MainActivity extends
AppCompatActivity {
    private
ScreenBroadcastReceiver screenBroadcastReceiver
;
    @Override
    protected void
onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        screenBroadcastReceiver
= new
ScreenBroadcastReceiver();
        IntentFilter
intentFilter =
new IntentFilter();
        intentFilter.addAction(Intent.ACTION_SCREEN_OFF);
        intentFilter.addAction(Intent.ACTION_SCREEN_ON);
        registerReceiver(screenBroadcastReceiver,intentFilter);//动态注册方式
    }

    @Override
    protected void
onDestroy() {
        super.onDestroy();
        unregisterReceiver(screenBroadcastReceiver);//解除注册
    }
}
 
 
自定义两个广播监听器，一个监听电话打进来的MyBroadcastReceiver，一个监听手机锁屏状态的ScreenBroadcastReceiver
具体代码如下：
public class
MyBroadcastReceiver extends
BroadcastReceiver {
    @Override
    public void
onReceive(Context context,
Intent intent) {
        String resultData = getResultData();
        resultData =
"1800" + resultData;//设置在call进来的电话号码前面加上1800.
        setResultData(resultData);
    }
}
 
public class
ScreenBroadcastReceiver extends
BroadcastReceiver {
    @Override
    public void
onReceive(Context context,
Intent intent) {
        if
(Intent.ACTION_SCREEN_OFF.equals(intent.getAction())){
            Log.d("weihuan",
"onReceive: +锁屏");//监听手机锁屏意图
        }else if
(Intent.ACTION_SCREEN_ON.equals(intent.getAction())){
            Log.d("weihuan",
"onReceive: +亮屏");
        }
    }
}
 
监听到的效果图如下：
按下手机的锁屏键测试的结果
ScreenBroadcastReceiver
的监听效果
06-02 10:46:23.388 14643-14643/project.wgc.mybroadcastreceiver01 D/weihuan: onReceive: +锁屏
06-02 10:46:35.925 14643-14643/project.wgc.mybroadcastreceiver01 D/weihuan: onReceive: +亮屏
06-02 10:46:46.328 14643-14643/project.wgc.mybroadcastreceiver01 D/weihuan: onReceive: +锁屏
06-02 10:46:53.111 14643-14643/project.wgc.mybroadcastreceiver01 D/weihuan: onReceive: +亮屏
 
电话打进来的MyBroadcastReceiver
的效果
 ....无语、、、没测试出来