BroadcastReceiver是安卓四大组件之一,本例通过代码的方式演示静态注册和动态注册。
1、静态注册
静态注册只需要AndroidManifest.xml中进行配置:
AndroidManifest.xml:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="thonlon.example.cn.ipdaildemo">
<uses-permission android:name="android.permission.PROCESS_OUTGOING_CALLS" />
<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>
<receiver android:name=".MyBroadcastReceiver">
<intent-filter>
<action android:name="android.intent.action.NEW_OUTGOING_CALL" />
</intent-filter>
</receiver>
</application>
</manifest>
下面是相关的代码:
MyBroadcastReceiver.java:
package thonlon.example.cn.ipdaildemo;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
/**
* Created by NIUXINLONG on 2018/6/21.
*/
public class MyBroadcastReceiver extends BroadcastReceiver{
@Override
public void onReceive(Context context, Intent intent) {
String number = getResultData();
setResultData(number+"123456");
}
}
MainActivity.java:
package thonlon.example.cn.ipdaildemo;
import android.content.IntentFilter;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
public class MainActivity extends AppCompatActivity {
private MyBroadcastReceiver myBroadcastReceiver;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
MyBroadcastReceiver myBroadcastReceiver = new MyBroadcastReceiver();//在主活动中调用了广播使广播生效
}
2、动态注册
需要在Java代码中进行如下设定:
MainActivity.java:
package thonlon.example.cn.ipdaildemo;
import android.content.IntentFilter;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
public class MainActivity extends AppCompatActivity {
private MyBroadcastReceiver myBroadcastReceiver;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
IntentFilter filter = new IntentFilter();
filter.addAction("android.intent.action.NEW_OUTGOING_CALL");
myBroadcastReceiver = new MyBroadcastReceiver();
registerReceiver(myBroadcastReceiver, filter);
}
@Override
protected void onDestroy() {
super.onDestroy();
unregisterReceiver(myBroadcastReceiver);//销毁广播
}
}
另外,动态相互侧虽然不需要在AndroidManifest.xml中配置<receiver>,但是不要忘了在配置文件加上广播类型的权限:
<uses-permission android:name="android.permission.PROCESS_OUTGOING_CALLS" />