第一行代码Android学习（六）

第一行代码Android学习：第六部分主要涉及到接收系统广播、发送自定义广播、使用本地广播

DYHDM_05_00BroadcastTest

1.AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.dyhdm_05_00broadcasttest"
android:versionCode="1"
android:versionName="1.0" >

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

<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />

<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name="com.example.dyhdm_05_00broadcasttest.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 android:name=".BootCompleteReceiver" >
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED" />
</intent-filter>
</receiver>
<receiver android:name=".MyBoradcastReceiver" >
<intent-filter android:priority="100">
<action android:name="com.example.dyhdm_05_00broadcasttest.MY_BROADCAST" />
</intent-filter>
</receiver>
</application>

</manifest>

2.activity_main.xml

<RelativeLayout 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"
tools:context=".MainActivity" >

<Button
android:id="@+id/bt"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
android:text="Send Broadcast" />

</RelativeLayout>

3.BootCompleteReceiver.java

/*
* @Title:  BootCompleteReceiver.java
* @Description:  TODO
* @author:  张志安
* @date:  2016-8-16 上午9:07:07
*
*/
package com.example.dyhdm_05_00broadcasttest;

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

/**
* TODO 静态注册实现开机启动 需要修改AndroidManifest.xml
*
* <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
* <receiver android:name=".BootCompleteReceiver" >
*      <intent-filter>
*          <action android:name="android.intent.action.BOOT_COMPLETED" />
*      </intent-filter>
* </receiver>
*
* @author 张志安
* @date: 2016-8-16 上午9:07:07
*/
public class BootCompleteReceiver extends BroadcastReceiver {

/**
* 重载方法
*/
@Override
public void onReceive(Context context, Intent intent) {
Toast.makeText(context, "Boot Complete", Toast.LENGTH_SHORT).show();
}

}

4.MainActivity.java

package com.example.dyhdm_05_00broadcasttest;

import android.app.Activity;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.os.Bundle;
import android.support.v4.content.LocalBroadcastManager;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.Toast;

public class MainActivity extends Activity {

private IntentFilter intentFilter;
private NetworkChangeReceiver networkChangeReceiver;

private LocalBroadcastManager localBroadcastManager;
private LocalReceiver localReceiver;
private Button bt;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

// 本地广播
localBroadcastManager = LocalBroadcastManager.getInstance(this);

bt = (Button) findViewById(R.id.bt);
bt.setOnClickListener(new OnClickListener() {

@Override
public void onClick(View v) {
// 发送标准广播
// sendBroadcast(new
// Intent("com.example.dyhdm_05_00broadcasttest.MY_BROADCAST"));
// 发送有序广播
// 在AndroidManifest.xml中加android:priority="100"优先级较高可以先收到广播
// sendOrderedBroadcast(new
// Intent("com.example.dyhdm_05_00broadcasttest.MY_BROADCAST"),null);
// 发送本地广播
localBroadcastManager
.sendBroadcast(new Intent(
"com.example.dyhdm_05_00broadcasttest.LOCAL_BROADCAST"));
}
});

// 动态注册监听网络变化
// intentFilter = new IntentFilter();
// intentFilter.addAction("android.net.conn.CONNECTIVITY_CHANGE");
// networkChangeReceiver = new NetworkChangeReceiver();
// registerReceiver(networkChangeReceiver, intentFilter);

// 本地注册监听网络变化
intentFilter = new IntentFilter();
intentFilter
.addAction("com.example.dyhdm_05_00broadcasttest.LOCAL_BROADCAST");
localReceiver = new LocalReceiver();
localBroadcastManager.registerReceiver(localReceiver, intentFilter);

}

/**
* 重载方法
*/
@Override
protected void onDestroy() {
super.onDestroy();
// 取消广播接收器的注册
// unregisterReceiver(networkChangeReceiver);
// 取消本地广播接收器的注册
localBroadcastManager.unregisterReceiver(localReceiver);

}

/**
* TODO 网络状态改变的广播接收器
*
* @author 张志安
* @date: 2016-8-16 上午9:45:43
*/
class NetworkChangeReceiver extends BroadcastReceiver {

/**
* 重载方法
*/
@Override
public void onReceive(Context context, Intent intent) {
ConnectivityManager connectivityManager = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo networkInfo = connectivityManager
.getActiveNetworkInfo();
if (networkInfo != null && networkInfo.isAvailable()) {
Toast.makeText(context, "network is available",
Toast.LENGTH_SHORT).show();
} else {
Toast.makeText(context, "network is unavailable",
Toast.LENGTH_SHORT).show();
}

}

}

/**
* TODO 本地广播的广播接收器
*
* @author 张志安
* @date: 2016-8-16 上午9:48:01
*/
class LocalReceiver extends BroadcastReceiver {

/**
* 重载方法
*/
@Override
public void onReceive(Context context, Intent intent) {
Toast.makeText(context, "received local broadcast",
Toast.LENGTH_SHORT).show();
}

}
}

5.MyBoradcastReceiver.java

/*
* @Title:  MyBoradcastReceiver.java
* @Description:  TODO
* @author:  张志安
* @date:  2016-8-16 上午9:17:38
*
*/
package com.example.dyhdm_05_00broadcasttest;

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

/**
* TODO 联系发送广播需要用到的广播接收器
* @author  张志安
* @date:  2016-8-16 上午9:17:38
*/
public class MyBoradcastReceiver extends BroadcastReceiver {

/**
* 重载方法
*/
@Override
public void onReceive(Context context, Intent intent) {
Toast.makeText(context, "received in MyBoradcastReceiver", Toast.LENGTH_SHORT).show();
//将广播截断
abortBroadcast();
}

}

DYHDM_05_01BroadcastTest1

1.AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.dyhdm_05_01broadcasttest1"
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.dyhdm_05_01broadcasttest1.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 android:name=".AnotherBroadcastReceiver" >
<intent-filter>
<action android:name="com.example.dyhdm_05_00broadcasttest.MY_BROADCAST" />
</intent-filter>
</receiver>
</application>

</manifest>

2.MainActivity.java

package com.example.dyhdm_05_01broadcasttest1;

import android.app.Activity;
import android.os.Bundle;

public class MainActivity extends Activity {

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}

}

3.AnotherBroadcastReceiver.java

/*
* @Title:  AnotherBroadcastReceiver.java
* @Description:  TODO
* @author:  张志安
* @date:  2016-8-16 上午9:28:51
*
*/
package com.example.dyhdm_05_01broadcasttest1;

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

/**
* TODO 从另一个项目中接受广播
*
* @author 张志安
* @date: 2016-8-16 上午9:28:51
*/
public class AnotherBroadcastReceiver extends BroadcastReceiver {

/**
* 重载方法
*/
@Override
public void onReceive(Context context, Intent intent) {
Toast.makeText(context, "received in AnotherBoradcastReceiver",
Toast.LENGTH_SHORT).show();
}

}

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