转:android中APK开机自动运行

时间:2021-04-08 21:03:43
背景知识:当Android启动时,会发出一个系统广播,内容为ACTION_BOOT_COMPLETED,它的字符串常量表示为android.intent.action.BOOT_COMPLETED。只要在程序中“捕捉”到这个消息,再启动之即可。记住,Android框架说:Don't call me, I'll call you back。我们要做的是做好接收这个消息的准备,而实现的手段就是实现一个BroadcastReceiver。
代码解析:
1、界面Activity:SayHello.java
package com.ghstudio.BootStartDemo;  

import android.app.Activity;
import android.os.Bundle;
import android.widget.TextView; public class SayHello extends Activity { @Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState); TextView tv = new TextView(this);
tv.setText("Hello. I started!"); setContentView(tv);
}
}
这段代码很简单,当Activity启动时,创建一个TextView,用它显示"Hello. I started!"字样。
2、接收广播消息:BootBroadcastReceiver.java
package com.ghstudio.BootStartDemo;  

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent; public class BootBroadcastReceiver extends BroadcastReceiver { static final String ACTION = "android.intent.action.BOOT_COMPLETED"; @Override
public void onReceive(Context context, Intent intent) { if (intent.getAction().equals(ACTION)){
Intent sayHelloIntent=new Intent(context,SayHello.class);
sayHelloIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); context.startActivity(sayHelloIntent);
}
} }
该类派生自BroadcastReceiver,覆载方法onReceive中,检测接收到的Intent是否符合BOOT_COMPLETED,如果符合,则启动SayHello那个Activity。
3、配置文件:AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.ghstudio.BootStartDemo"
android:versionCode="1"
android:versionName="1.0">
<application android:icon="@drawable/icon" android:label="@string/app_name">
<activity android:name=".SayHello"
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=".BootBroadcastReceiver">
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED" />
</intent-filter>
</receiver>
</application>
<uses-sdk android:minSdkVersion="3" /> <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"></uses-permission> </manifest>
注意其中粗体字那一部分,该节点向系统注册了一个receiver,子节点intent-filter表示接收 android.intent.action.BOOT_COMPLETED消息。不要忘记配置 android.permission.RECEIVE_BOOT_COMPLETED权限。

===========================================

1.要做的就是监听系统发出的broadcast

public class FlorenceText extends BroadcastReceiver{

        public void onReceive(Context context, Intent intent) {
if(Intent.ACTION_BOOT_COMPLETED.equals(intent.getAction())){
start(context); } } }

2.在AndroidMenifest.xml里还要将receiver加上, 并写明程序的入口就是FlorenceTest

    <application
android:icon="@drawable/ic_launcher"
android:label="@string/app_name" >
<receiver android:name=".main.FlorenceTest"
android:exported="true"
android:process=":remote"> <intent-filter >
<action android:name="android.intent.action.BOOT_COMPLETED" />
<category android:name="android.intent.category.HOME"/>
</intent-filter>
</receiver> </application>

这样,程序就可以在开机时自动运行了

转自:http://blog.csdn.net/wh_19910525/article/details/7921685