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android入门——BroadCast(2)

2024-08-14 06:45:49   221人阅读

自定义广播

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<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android"    package="com.example.wkp.broadcast">    <!-- 声明自定义权力 -->    <permission android:name="com.example.wkp.broadcast.MY_PEMISSION"/>    <application        android:allowBackup="true"        android:icon="@mipmap/ic_launcher"        android:label="@string/app_name"        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>        <activity android:name=".SecondActivity">            <intent-filter>                <action android:name="android.intent.action.MAIN" />                <category android:name="android.intent.category.LAUNCHER" />            </intent-filter>        </activity>        <receiver android:name=".MyReceiver2">            <intent-filter>                <action android:name="com.example.wkp.broadcast.MY_ACTION"/>            </intent-filter>        </receiver>         <!--静态注册 -->        <receiver android:name=".MyReceiver">            <intent-filter>                <!-- 动作   打开飞行模式时触发广播 -->                <!--<action android:name="android.intent.action.AIRPLANE_MODE"/>-->                <!-- 收到短信时  暂时无法实现 -->                <!--<action android:name="android.provider.Telephony.SMS_RECEIVED"/>-->                <!--<action android:name="android.provider.Telephony.SMS_DELIVER"/>-->            </intent-filter>        </receiver>    </application>    <!-- 开启短信权限 -->    <uses-permission android:name="android.permission.SEND_SMS"></uses-permission>    <uses-permission android:name="android.permission.RECEIVE_SMS"></uses-permission>    <uses-permission android:name="android.permission.READ_SMS"></uses-permission>    <!-- 自定义权力 -->    <uses-permission android:name="com.example.wkp.broadcast.MY_PEMISSION"></uses-permission></manifest>
AndroidMainfest.xml

注意声明自定义权力 

<permission android:name="com.example.wkp.broadcast.MY_PEMISSION"/>

开启权力

<uses-permission android:name="com.example.wkp.broadcast.MY_PEMISSION"></uses-permission>

静态注册

<receiver android:name=".MyReceiver2">
    <intent-filter>
        <action android:name="com.example.wkp.broadcast.MY_ACTION"/>
    </intent-filter>
</receiver>
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package com.example.wkp.broadcast;import android.content.BroadcastReceiver;import android.content.Context;import android.content.Intent;import android.util.Log;/** * Created by wkp on 2016/9/21. */public class MyReceiver2 extends BroadcastReceiver{    @Override    public void onReceive(Context context, Intent intent) {        Log.v("hh","get broadcast");    }}
MyReceiver2.java

接收器

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package com.example.wkp.broadcast;import android.app.Activity;import android.content.Intent;import android.os.Bundle;import android.util.Log;import android.view.View;import android.widget.Button;/** * Created by wkp on 2016/9/21. */public class SecondActivity extends Activity {    private Button btn=null;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_second);        btn= (Button) findViewById(R.id.send);        btn.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                Intent intent=new Intent();                intent.setAction("com.example.wkp.broadcast.MY_ACTION");                sendBroadcast(intent,"com.example.wkp.broadcast.MY_PEMISSION");                Log.v("hehe","already send");            }        });    }}
SecondActivity.java

点击按钮发送广播

 

 

有序广播先定义先接收

abortBroadcast();忽略广播  

可以通过android:priority制定优先级  不写为0

可以设置是否接收其他app的广播

可以设置是否被其他app接收广播 本地广播LocalBroadcastManager

private LocalBroadcastManager manager= LocalBroadcastManager.getInstance(this);

LocalReceiver receiver=new LocalReceiver();

IntentFilter filter=new IntentFilter();

filter.addAction("com.example.wkp.broadcast.MY_ACTION");

manager.registerReceiver(receiver,filter);

 

android入门——BroadCast(2)


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