BroastcastReceiver的具体使用方法, 还不是很清楚,
今天又学习了一下大神张国威的博客. 有点收获.
忙里抽闲也要找点时间来学习..
动态和静态调用的方法都不是很复杂.
这个例子里面还包函了获取系统参数的方法.
动态注册比静态注册要简单一些:
两步就可以了.
// 动态注册广播消息
registerReceiver(bcrIntenal1, new IntentFilter(INTENAL_ACTION_1)); /*
* 接收动态注册广播的BroadcastReceiver
*/
private BroadcastReceiver bcrIntenal1 = new BroadcastReceiver() {
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
Toast.makeText(context, "动态:" + action, 1000).show();
}
};静态注册的方法:
首先要在XML中声明:
// 静态注册方法
<receiver android:name=".StaticReceiver">
<intent-filter>
<action
android:name="com.testBroadcastReceiver.Internal_2"/>
</intent-filter>
</receiver>
两个name, 第一个name 是类名. 第二个是action名称.
public class StaticReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
Toast.makeText(context, "静态:" + action, 1000).show();
}
}
具体代码:
src/main/AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.youtwo.testbroastcast" >
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name=".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>
// 静态注册方法
<receiver android:name=".StaticReceiver">
<intent-filter>
<action
android:name="com.testBroadcastReceiver.Internal_2"/>
</intent-filter>
</receiver>
</application>
</manifest>
布局文件:
layout/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" android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:paddingBottom="@dimen/activity_vertical_margin" tools:context=".MainActivity">
<LinearLayout
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_alignParentTop="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true">
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="内部动态注册BroadCastReceiver"
android:id="@+id/button1" />
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="内部静态注册BroadCastReceiver"
android:id="@+id/button2" />
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="系统BROADCASTReceiver"
android:id="@+id/button3"
android:layout_gravity="center_horizontal" />
</LinearLayout>
</RelativeLayout>
com/example/youtwo/testbroastcast/MainActivity.java
package com.example.youtwo.testbroastcast;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;
public class MainActivity extends ActionBarActivity {
Button btnInnerDynamic, btnInnerStatic, btnSystem;
static final String INTENAL_ACTION_1 = "com.testBroadcastReceiver.Internal_1"; // 动态
static final String INTENAL_ACTION_2 = "com.testBroadcastReceiver.Internal_2"; // 静态
static final String INTENAL_ACTION_3 = "com.testBroadcastReceiver.Internal_3"; // 系统
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
btnInnerDynamic = (Button)this.findViewById(R.id.button1);
btnInnerDynamic.setOnClickListener(new ClickEvent());
btnInnerStatic = (Button)this.findViewById(R.id.button2);
btnInnerStatic.setOnClickListener(new ClickEvent());
btnSystem = (Button)this.findViewById(R.id.button3);
btnSystem.setOnClickListener(new ClickEvent());
// 动态注册广播消息
registerReceiver(bcrIntenal1, new IntentFilter(INTENAL_ACTION_1));
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
class ClickEvent implements View.OnClickListener {
@Override
public void onClick(View v) {
if(v == btnInnerDynamic) {
Intent intent = new Intent(INTENAL_ACTION_1);
sendBroadcast(intent);
}
else if(v == btnInnerStatic) {
Intent intent = new Intent(INTENAL_ACTION_2);
sendBroadcast(intent);
}
else if(v == btnSystem) {
// 获取系统参数的方法
IntentFilter filter = new IntentFilter();//
filter.addAction(Intent.ACTION_BATTERY_CHANGED);//系统电量检测信息
filter.addAction(INTENAL_ACTION_3);//第三组自定义消息
registerReceiver(batInfoReceiver, filter);
Intent intent = new Intent(INTENAL_ACTION_3);
intent.putExtra("Name", "大神");
intent.putExtra("Blog", "http://blog.youkuaiyun.com/hellogv"); // 有时间去膜拜一下.
sendBroadcast(intent);//传递过去
}
}
}
/*
* 接收动态注册广播的BroadcastReceiver
*/
private BroadcastReceiver bcrIntenal1 = new BroadcastReceiver() {
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
Toast.makeText(context, "动态:" + action, 1000).show();
}
};
private BroadcastReceiver batInfoReceiver = new BroadcastReceiver() {
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
//如果捕捉到的action是ACTION_BATTERY_CHANGED
if (Intent.ACTION_BATTERY_CHANGED.equals(action)) {
//当未知Intent包含的内容,则需要通过以下方法来列举
Bundle b=intent.getExtras();
Object[] lstName=b.keySet().toArray();
for(int i=0;i<lstName.length;i++)
{
String keyName=lstName[i].toString();
Log.e(keyName, String.valueOf(b.get(keyName)));
}
}
//如果捕捉到的action是INTENAL_ACTION_3
if (INTENAL_ACTION_3.equals(action)) {
//当未知Intent包含的内容,则需要通过以下方法来列举
Bundle b=intent.getExtras();
Object[] lstName=b.keySet().toArray();
for(int i=0;i<lstName.length;i++)
{
String keyName=lstName[i].toString();
Log.e(keyName,b.getString(keyName));
}
}
}
};
}
com/example/youtwo/testbroastcast/StaticReceiver.java
package com.example.youtwo.testbroastcast;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.widget.Toast;
/**
* Created by YouTwo on 2015/1/19.
*/
public class StaticReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
Toast.makeText(context, "静态:" + action, 1000).show();
}
}
本文介绍了Android中BroadcastReceiver的使用方法,包括动态和静态注册过程,并提供了具体的代码示例。此外,还介绍了如何通过BroadcastReceiver获取系统参数。

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