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Android之BroadcastReceiver1

2014-04-07 12:04 316 查看
1.触发发送广播

public class MainActivity extends Activity {
private Button sendButton;

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

sendButton = (Button) findViewById(R.id.sendButton);
sendButton.setOnClickListener(new BroadcastListener());
/*
* if (savedInstanceState == null) {
* getSupportFragmentManager().beginTransaction() .add(R.id.container,
* new PlaceholderFragment()).commit(); }
*/
}

class BroadcastListener implements OnClickListener {
@Override
public void onClick(View v) {
TestReceiver tr = new TestReceiver();
Intent intent = new Intent();
intent.setAction(Intent.ACTION_EDIT);
MainActivity.this.sendBroadcast(intent);
}
}


2.注册广播

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.mars_1700_broadcast"
android:versionCode="1"
android:versionName="1.0" >

<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="19" />

<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name="com.example.mars_1700_broadcast.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>
<!-- 注册一个广播 -->
<receiver android:name=".TestReceiver">
<intent-filter>
<action android:name="android.intent.action.EDIT"/>
</intent-filter>
</receiver>
</application>

</manifest>


3.定义接收广播类

package com.example.mars_1700_broadcast;

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

public class TestReceiver extends BroadcastReceiver{

public TestReceiver(){
System.out.println("TestReceiver");
}

@Override
public void onReceive(Context context, Intent intent) {
System.out.println("onReceive");
}

}
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