android代码实现自动关机（非root也可以）

activity.java

public class MainActivity extends Activity {

 

         private Button  btn;

        

    @Override

    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.main);

        btn=(Button)findViewById(R.id.button1);

        btn.setOnClickListener(new OnClickListener() {

                           

                            @Override

                            public void onClick(View v) {

                                     Intent intent=new Intent(MainActivity.this,CloseService.class);

                                     startService(intent);

                            }

                   });

    }

 

    @Override

    public boolean onCreateOptionsMenu(Menu menu) {

        getMenuInflater().inflate(R.menu.main, menu);

        return true;

    }

}

 

service.java

public class CloseService extends Service {

 

         @Override

         public IBinder onBind(Intent intent) {

                   return null;

         }

 

         @Override

         public int onStartCommand(Intent intent, int flags, int startId) {

                   Intent newIntent = new Intent(Intent.ACTION_REQUEST_SHUTDOWN);//之所以能够在源码中查看，但是调用的时候不显示，是因为这个不对上层开放

                   newIntent.putExtra(Intent.EXTRA_KEY_CONFIRM, false);

        newIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

        startActivity(newIntent);

                   return super.onStartCommand(intent, flags, startId);

         }

}

AndroidManifest.xml

<manifest xmlns:android="http://schemas.android.com/apk/res/android"

    package="feng.f7_30.activity"

    android:versionCode="1"

    android:versionName="1.0"

    android:sharedUserId="android.uid.system">

        

    <uses-sdk

        android:minSdkVersion="8"

        android:targetSdkVersion="15" />

    <uses-permission android:name="android.permission.SHUTDOWN"/>

 

    <application

        android:icon="@drawable/ic_launcher"

        android:label="@string/app_name"

        android:theme="@style/AppTheme" >

        <activity

            android:name=".MainActivity"

            android:label="@string/title_activity_main" >

            <intent-filter>

                <action android:name="android.intent.action.MAIN" />

 

                <category android:name="android.intent.category.LAUNCHER" />

            </intent-filter>

        </activity>

        <service android:name="CloseService"></service>

    </application>

 

</manifest>

 

main.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:tools="http://schemas.android.com/tools"

    android:layout_width="match_parent"

    android:layout_height="match_parent" >

 

    <Button

        android:id="@+id/button1"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_alignParentLeft="true"

        android:layout_alignParentTop="true"

        android:text="@string/btn_name" />

 

</RelativeLayout>

 

 

string.xml

添加一条

<resources>

    <string name="btn_name">close</string>

</resources>