1、开机自启动

public class BootReceiver extends BroadcastReceiver {private static final String ACTION = "android.intent.action.BOOT_COMPLETED";private static final String TAG = "ZED_Led_Receiver";private static final String FileName = "/sys/class/zed/led1";private static final String action_boot="android.intent.action.BOOT_COMPLETED"; //启动APK@Overridepublic void onReceive(Context context, Intent intent) {//Log.e(TAG,"LedReceiver.");if (intent.getAction().equals(ACTION)){{   //启动APKIntent ootStartIntent=new Intent(context,BootActivity.class); //这一句的BootActivity是要启动的activityootStartIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); context.startActivity(ootStartIntent); }if(android.os.SystemProperties.get("persist.sys.skled").equals("1")){ledSet(1);}else{ledSet(0);} }	}

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"package="com.pstreets.demo"android:versionCode="1"android:versionName="1.0" ><uses-sdk android:minSdkVersion="10" /><uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" /><uses-permission android:name="android.permission.DISABLE_KEYGUARD" /><applicationandroid:icon="@drawable/ic_launcher"android:label="@string/app_name" ><activityandroid:name=".BootupDemoActivity"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=".BootupReceiver" android:enabled="true"android:permission="android.permission.RECEIVE_BOOT_COMPLETED">            <intent-filter>                <action android:name="android.intent.action.BOOT_COMPLETED"></action>   <category android:name="android.intent.category.DEFAULT" />         </intent-filter> </receiver></application></manifest>

2、一个APK启动另一个APK代码

package com.motic.uitest;import android.app.Activity;
import android.content.ComponentName;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;public class UITestActivity extends Activity {/** Called when the activity is first created. */Button m_btn;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.main);m_btn = (Button)findViewById(R.id.but);m_btn.setOnClickListener(new BtnLister());      }public class BtnLister implements OnClickListener{public void onClick(View v) {Intent mIntent = new Intent( ); ComponentName comp = new ComponentName("com.example", "com.example.UITutorial_V2Activity");
//	        ComponentName comp = new ComponentName("com.example.layout",
//	        		"com.example.layout.SmsActivity");mIntent.setComponent(comp); mIntent.setAction("android.intent.action.VIEW"); startActivity(mIntent);finish();}   	}}