Android无序广播的实现代码

首先大多时候都是无序广播与有序广播的区别,那今天先讲讲无序广播.

咱们先来讲一个广播发送者和广播接受者的案例

1.如图:

熟悉一下广播传播者与广播接受者的属性

下面会带大家熟悉代码,简单的演示一下

2.代码演示:

发送者的一个简单布局

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
    android:orientation="vertical"
    android:layout_height="match_parent" tools:context="com.example.my_android_sender.MainActivity">

   <EditText
       android:layout_width="match_parent"
       android:layout_height="wrap_content"
       android:id="@+id/et_main_content"
       android:hint="请输入要发送的内容"
       />

    <Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="发送"
        android:onClick="send"
        />

</LinearLayout>

发送者的activity,在此之中,我用了黏性广播

package com.example.my_android_sender;

import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.EditText;

public class MainActivity extends AppCompatActivity {

    private EditText editText;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        editText = (EditText) findViewById(R.id.et_main_content);
    }
    public void  send(View view){
        String content=editText.getText().toString();
        //发送广播
        //两种类型的广播
        //有序广播 无序广播
        Intent intent=new Intent();
        //指定广播的名字
        intent.setAction("com.example.my_android_sender.Tiny");//你的包名之后取一个名字
        //指定广播内容
        intent.putExtra("content",content);
        //发送无序广播
//        sendBroadcast(intent);
        //发送无序黏性广播
        sendStickyBroadcast(intent);

    }

}


由于用了黏性广播,那就需要获取黏性广播的读取权限

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.my_android_sender">

    <!--黏性广播权限-->
    <uses-permission android:name="android.permission.BROADCAST_STICKY"></uses-permission>

    <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>
    </application>

</manifest>

两个接受者,一个动态注册(Receiver01),一个静态注册(Receiver02).

<!--注册:广播接受者
动态注册:使用java代码配置

静态注册:在xml文件中配置
-->

动态注册(Receiver01)
A.MyReceiver01

package com.example.my_android_receiver01;

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.util.Log;

/**
 * Created by Administrator on 2017/7/11.
 */

public class MyReceiver01 extends BroadcastReceiver {
    @Override
    public void onReceive(Context context, Intent intent) {
        //获取广播的名字
        String action=intent.getAction();
        if ("com.example.my_android_sender.Tiny".equals(action)){
            //获取广播内容
            String content=intent.getStringExtra("content");
            Log.i("test","广播接受者1号："+content);
        }
    }
}




B.activity
package com.example.my_android_receiver01;

import android.content.IntentFilter;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.text.InputFilter;

public class MainActivity extends AppCompatActivity {

    private MyReceiver01 myReceiver01;
    private IntentFilter intentFilter;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        myReceiver01 = new MyReceiver01();
        intentFilter = new IntentFilter();
        intentFilter.addAction("com.example.my_android_sender.Tiny");
    }

    //动态
    @Override
    protected void onResume() {
        super.onResume();
        //注册广播
        registerReceiver(myReceiver01,intentFilter);
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        //取消注册
        unregisterReceiver(myReceiver01);
    }
}


静态注册(Receiver02).
A.MyReceiver02
由于它是静态所以不需要java代码,只需要配置xml
package com.example.my_android_receiver02;

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.util.Log;

/**
 * Created by Administrator on 2017/7/11.
 */

public class MyReceiver02 extends BroadcastReceiver {
    @Override
    public void onReceive(Context context, Intent intent) {
        //获取广播的名字
        String action=intent.getAction();
        if ("com.example.my_android_sender.Tiny".equals(action)){
            //获取广播内容
            String content=intent.getStringExtra("content");
            Log.i("test","广播接受者2号："+content);
        }
    }
}

配置

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.my_android_receiver02">

    <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>

        <!--注册:广播接受者
      动态注册:使用java代码配置

      静态注册:在xml文件中配置
      -->
        
        <receiver android:name=".MyReceiver02">
            <intent-filter>
                <action android:name="com.example.my_android_sender.Tiny"></action>
            </intent-filter>
        </receiver>
        
        
    </application>

</manifest>

这个案例就算是完成了,如果有什么疑问,请进行留言回复.