系统应用：一键锁屏

自己写了一个一键锁屏的程序，还是遇到了很多的BUG的，在此记录下。

MainActivity.java:

package com.chinachip.onekeylock;

import android.app.Activity;

import android.content.Context;

import android.os.Bundle;

import android.os.PowerManager;

import android.os.SystemClock;

import android.os.Process;

import android.util.Log;

public class MainActivity extends Activity {

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        // TODO Auto-generated method stub

        super.onCreate(savedInstanceState);

        PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);

      pm.goToSleep(SystemClock.uptimeMillis());

      Process.killProcess(Process.myPid());   //必须加此句，否则闪屏

    }

}

Manifest.mk文件：

<?xml version="1.0" encoding="utf-8"?>

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

    package="com.chinachip.onekeylock"

    android:sharedUserId="android.uid.system"     //系统权限

    android:versionCode="1"

    android:versionName="1.0" >

    <uses-sdk

        android:minSdkVersion="8"

        android:targetSdkVersion="21" />

    <permission android:name="android.permission.DEVICE_POWER"></permission>    //灭屏权限

    <application

        android:allowBackup="true"

        android:icon="@drawable/ic_launcher"

        android:label="@string/app_name"

        android:theme="@android:style/Theme.NoDisplay" >  //必须用此theme，否则闪屏

        <activity

            android:name=".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>

    </application>

</manifest>

Android.mk文件：

LOCAL_PATH:= $(call my-dir)

include $(CLEAR_VARS)

LOCAL_MODULE_TAGS := optional

LOCAL_STATIC_JAVA_LIBRARIES := libarity android-support-v4 guava

LOCAL_SRC_FILES := $(call all-java-files-under, src)

LOCAL_PACKAGE_NAME := OneKeyLock

LOCAL_CERTIFICATE := platform      //LOCAL_SDK_VERSION := current  不能加，否则就会报找不到goToSleep()方法的错误

LOCAL_PROGUARD_ENABLED := full

LOCAL_PROGUARD_FLAGS := -include $(LOCAL_PATH)/proguard.flags

#LOCAL_PRIVILEGED_MODULE := true //加入此句就编译进priv-app里面，默认编译到app里面

#LOCAL_DEX_PREOPT := false      //是否解压出apk的odex文件，默认解压

include $(BUILD_PACKAGE)

# Use the folloing include to make our test apk.

include $(call all-makefiles-under,$(LOCAL_PATH))