Android四大組件之--BroadcastReceiver

靜態廣播,動態廣播,有序廣播

MainActivity.Java

package com.example.week4_day5_case;

import android.os.Bundle;
import android.app.Activity;
import android.content.Intent;
import android.content.IntentFilter;
import android.view.View;

public class MainActivity extends Activity {

	BroadCast1 broadCast1=new BroadCast1();
	BroadCast2 broadCast2=new BroadCast2();
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        IntentFilter intentFilter=new IntentFilter();
        intentFilter.addAction("www.com");
       registerReceiver(broadCast1, intentFilter);
       registerReceiver(broadCast2, intentFilter);
    }
    
    public void Send(View v){
    	switch (v.getId()) {
    
    	/**
    	 * 靜態廣播
    	 * 1 新建一個廣播類,繼承BroadcastReceiver 
    	 * 2 實現方法 onReceive
    	 * 3 在清單配置文件中註冊廣播
    	 * 4 發送接收
    	 */
		case R.id.send1:
			Intent intent=new Intent();
			intent.putExtra("str", "表示已經收到靜態廣播");
			intent.setAction("qqs.com");
			sendBroadcast(intent);
			break;
			/**
			 * 動態廣播
			 * 步驟: 1 聲明並創建廣播對象
			 * 2  registerReceiver註冊廣播
			 * 3 創建意圖過濾器
			 * 4 添加action
			 * 5 發送,接收
			 */
		case R.id.send2:
			Intent intent2=new Intent();
			intent2.putExtra("str", "表示已經收到動態廣播");
			intent2.setAction("www.com");
			sendBroadcast(intent2);
			break;
			/**
			 * 順序廣播
			 * 在清單文件中添加優先級
			 */
			case R.id.send3:
				Intent intent3=new Intent();
				intent3.putExtra("str", "表示已經收到順序廣播");
				intent3.setAction("q.com");
				sendBroadcast(intent3);
				break;
		default:
			break;
		}
    }
}

接收靜態廣播1

package com.example.week4_day5_case;

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.widget.Toast;

public class StaticBroadCast1 extends BroadcastReceiver{

	/*
	 * 接收和處理廣播
	 * 參數1 上下文對象
	 * 參數2 發送過來的意圖
	 */
	@Override
	public void onReceive(Context context, Intent intent) {
		String content = intent.getStringExtra("str");
		Toast.makeText(context,"StaticBroadCast1"+content , Toast.LENGTH_SHORT).show();
		
	}

}

接收靜態廣播2

package com.example.week4_day5_case;

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.widget.Toast;

public class StaticBroadCast2 extends BroadcastReceiver{

	@Override
	public void onReceive(Context context, Intent intent) {
		String content = intent.getStringExtra("str");
		Toast.makeText(context,"StaticBroadCast2"+content , Toast.LENGTH_SHORT).show();
		
	}

}

接收動態廣播1

package com.example.week4_day5_case;

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.widget.Toast;

public class BroadCast1 extends BroadcastReceiver{

	@Override
	public void onReceive(Context context, Intent intent) {
		String content = intent.getStringExtra("str");
		Toast.makeText(context,"BroadCast1"+content , Toast.LENGTH_SHORT).show();
		
	}

}

接收動態廣播2,有序廣播1,2 同上

清單配置文件

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.week4_day5_case"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="17" />

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name="com.example.week4_day5_case.MainActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <!-- receiver:註冊廣播
         priority:優先級,-1000~1000,值越大優先級越高-->
        <receiver android:name=".StaticBroadCast1">
            <intent-filter >
                <action android:name="qqs.com"/>
               
            </intent-filter>
        </receiver>
         <receiver android:name=".StaticBroadCast2">
            <intent-filter >
                <action android:name="qqs.com"/>
            </intent-filter>
        </receiver>
        <receiver android:name=".BroadCast_1">
            <intent-filter android:priority="1">
                <action android:name="q.com"/>
               
            </intent-filter>
        </receiver>
         <receiver android:name=".BroadCast_2">
            <intent-filter android:priority="2">
                <action android:name="q.com"/>
            </intent-filter>
        </receiver>
    </application>

</manifest>

佈局文件

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    >

    <Button
        android:id="@+id/send1"
        android:onClick="Send"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="靜態廣播" />
      <Button
        android:id="@+id/send2"
        android:onClick="Send"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="動態廣播" />
        <Button
        android:id="@+id/send3"
        android:onClick="Send"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="有序廣播" />

</LinearLayout>