Android 广播(Broadcast)程序开机自启动

学习这个“通过广播开机自启动”知识点时忽略了手机本身“设置”里面自启动权限的没有打开，害得我思考好久。

BootTestActivity.class

package com.xxx.study;

import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;

public class BootTestActivity extends Activity {

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

}

BootCompletedReceiver.class

package com.xxx.study; 

import android.R.anim;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.text.AndroidCharacter;

public class BootCompletedReceiver extends BroadcastReceiver {
  @Override
  public void onReceive(Context context, Intent intent) {
        System.out.println("@@@@@@");

    if (intent.getAction().equals("android.intent.action.BOOT_COMPLETED"))
    {
        System.out.println("@@@@@@...bootComplete!");
      Intent newIntent = new Intent(context, BootTestActivity.class);
      newIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);  //注意，必须添加这个标记，否则启动会失败
      context.startActivity(newIntent);  

    }
  }
} 

manifest.xml

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

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="18" />
 <!-- permissions -->
    <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name="com.xxx.study.BootTestActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
          <!-- receivers -->
        <receiver android:name=".BootCompletedReceiver">
            <intent-filter>
                <action android:name="android.intent.action.BOOT_COMPLETED" />
                 <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </receiver>
    </application>

</manifest>