android activity/service开机后自动运行

看了网上的几个例子，也做了一个系统启动后直接运行 activity的小程序

代码贴在下面：

首先是从 BroadcastReceiver 派生出一个新类，用来监听系统启动后发出的广播消息 android.intent.action.BOOT_COMPLETED 。

BootReceiver.java:

import android. content. BroadcastReceiver; import android. content. Context ; import android. content. Intent; import android. util . Log ; public class BootReceiver extends BroadcastReceiver { public void onReceive( Context context , Intent intent) { if ( intent. getAction ( ) . equals ( "android.intent.action.BOOT_COMPLETED" ) ) { Log . d( "BootReceiver" , "system boot completed" ) ; Intent newIntent = new Intent( context , FirstRun. class ) ; newIntent. setAction ( "android.intent.action.MAIN" ) ; //MyActivity action defined in AndroidManifest.xml newIntent. addCategory( "android.intent.category.LAUNCHER" ) ; //MyActivity category defined in AndroidManifest.xml newIntent. setFlags( Intent. FLAG_ACTIVITY_NEW_TASK) ; //If activity is not launched in Activity environment, this flag is mandatory to set context . startActivity( newIntent) ; //if you want to start a service, follow below method: /******************************************************* Intent service = new Intent(yourService.ACTION_START); service.setClass(context, yourService.class); context.startService(service); ******************************************************/ } } }

接下来这个类就是监听到系统启动完毕后，我们要运行的activity.
FirstRun.java

import android. app. Activity ; import android. os. Bundle; public class FirstRun extends Activity { public void onCreate( Bundle savedInstanceState) { super . onCreate( savedInstanceState) ; setContentView( R. layout . main) ; } }

当然，我们还要改配置文件，需要注意的是,在manifest.xml中需要加上
< uses-permission android:name= "android.permission.RECEIVE_BOOT_COMPLETED" > < / uses-permission>

Manifest.xml

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

< application android:icon= "@drawable/icon" android:label= "@string/app_name" >
< receiver android:name= ".BootReceiver"
android:label= "@string/app_name" >
< intent-filter>
< action android:name= "android.intent.action.BOOT_COMPLETED" / >
< category android:name= "android.intent.category.LAUNCHER" / >
< / intent-filter>
< / receiver>
< activity android:name= ".FirstRun" >
< intent-filter>
< action android:name= "android.intent.action.MAIN" / >
< category android:name= "android.intent.category.LAUNCHER" / >
< / intent-filter>
< / activity>
< / application>
< uses-sdk android:minSdkVersion= "3" / >
< uses-permission android:name= "android.permission.RECEIVE_BOOT_COMPLETED" > < / uses-permission>
< / manifest>