BroadcastReceiver（广播）的静态注册和动态注册 --Android开发

Posted 2020-11-19 Thanlon

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" />