BroadcastReceiver開機啓動

轉載請註明出處：http://blog.csdn.net/u011569040/article/details/45729933

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

public class MainActivity extends Activity {

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

}

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.hardware.Camera;
import android.hardware.Camera.Parameters;
import android.widget.Toast;
 
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 myIntent = new Intent(context, MainActivity.class);  
            myIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
            context.startActivity(myIntent);
            
        }
    }
}

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

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="18" />

    <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.example.kai.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>
        
        <receiver android:name=".BootBroadcastReceiver">
  			<intent-filter>
    			<action android:name="android.intent.action.BOOT_COMPLETED" />
    			<category android:name="android.intent.category.HOME"/>
   			</intent-filter>
  		</receiver>
    </application>

</manifest>

注意：1.添加權限：<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/>

      2.

<receiver android:name=".BootBroadcastReceiver">
  			<intent-filter>
    			<action android:name="android.intent.action.BOOT_COMPLETED" />
    			<category android:name="android.intent.category.HOME"/>
   			</intent-filter>
  		</receiver>

                 特別是<category android:name="android.intent.category.HOME"/>，這一句不要不寫

           3.在安裝App時，把 允許 開機自啓 勾選

在開機後等一段時間纔會跳轉Activity