android实现一键锁屏和一键卸载的方法实例

本文主要是介绍android实现一键锁屏和一键卸载的方法实例，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！

前言

本文主要介绍了关于android实现一键锁屏和一键卸载的相关内容，分享出来供大家参考学习，这两个功能也是大家在开发中会遇到的两个需求，下面话不多说了，来一起看看详细的介绍吧。

一.设备管理器操作步骤

1.创建类DeviceAdminReceiver的子类

如：com.itheima62.lockscreen.DeviceAdminSample

2.在清单文件中配置广播接收者

<receiverandroid:name="com.itheima62.lockscreen.DeviceAdminSample"android:description="@string/sample_device_admin_description"android:label="@string/sample_device_admin"android:permission="android.permission.BIND_DEVICE_ADMIN"  <meta-dataandroid:name="android.app.device_admin"android:resource="@xml/device_admin_sample" / <intent-filter <action android:name="android.app.action.DEVICE_ADMIN_ENABLED" / </intent-filter </receiver

3.配置字符串相关信息

 <string name="activity_sample_device_admin" 设备管理员</string 
<string name="sample_device_admin" 管理员</string 
<string name="sample_device_admin_description" 开启设备管理员，不开启扣2000块</string

4.在res目录下创建xml文件夹，在该文件夹下创建device_admin_sample.xml文件，内容：

 <device-admin xmlns:android="http://schemas.android.com/apk/res/android" <uses-policies <limit-password / <watch-login / <reset-password / <force-lock / <wipe-data / <expire-password / <encrypted-storage / <disable-camera / </uses-policies 
</device-admin

5.在代码中创建设备管理器和组件

dpm = (DevicePolicyManager) getSystemService(DEVICE_POLICY_SERVICE);ComponentName who = new ComponentName(this, DeviceAdminSample.class);

6.写功能

dpm.lockNow();一键锁屏

二.源代码

创建类DeviceAdminReceiver的子类

package com.example.suoping;
import android.app.admin.DeviceAdminReceiver;
public class DeviceAdminSample extends DeviceAdminReceiver
{}

MainActivity

package com.example.suoping;import android.app.Activity;
import android.app.admin.DevicePolicyManager;
import android.content.ComponentName;
import android.content.Intent;
import android.os.Bundle;
import android.view.Menu;
import android.view.View;public class MainActivity extends Activity
{private DevicePolicyManager dpm;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);//setContentView(R.layout.activity_main);dpm = (DevicePolicyManager) getSystemService(DEVICE_POLICY_SERVICE);lockScreen(null);}/*** @param v* 一键锁屏*/public void lockScreen(View v){ //如果没有激活设备管理员，提醒给用户做事ComponentName who = new ComponentName(this, DeviceAdminSample.class);if (dpm.isAdminActive(who)){dpm.lockNow();//一键锁屏finish();}else {Intent intent = new Intent(DevicePolicyManager.ACTION_ADD_DEVICE_ADMIN);intent.putExtra(DevicePolicyManager.EXTRA_DEVICE_ADMIN, who);intent.putExtra(DevicePolicyManager.EXTRA_ADD_EXPLANATION,"设备管理器，，，，，，，，，，，，，，，，");startActivityForResult(intent, 1);}}@Overridepublic boolean onCreateOptionsMenu(Menu menu) {getMenuInflater().inflate(R.menu.main, menu);return true;}
}

RemoveActivity

package com.example.suoping;import android.app.Activity;
import android.app.admin.DevicePolicyManager;
import android.content.ComponentName;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.view.View;public class RemoveActivity extends Activity
{@Overrideprotected void onCreate(Bundle savedInstanceState) {// TODO Auto-generated method stubsuper.onCreate(savedInstanceState);remove(null);}/*** 一键卸载* @param v*/public void remove(View v){ // 取消激活设备管理DevicePolicyManager dpm = (DevicePolicyManager) getSystemService(DEVICE_POLICY_SERVICE);ComponentName who = new ComponentName(this, DeviceAdminSample.class);dpm.removeActiveAdmin(who);//取消激活管理设备//卸载Intent remove = new Intent("android.intent.action.DELETE");remove.addCategory("android.intent.category.DEFAULT");remove.setData(Uri.parse("package:" + getPackageName()));startActivity(remove);//卸载用户apk的界面}
}

布局文件

MainActivity.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"android:background="#00000000" 
</RelativeLayout

RemoveActivity.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"android:background="#00000000"</RelativeLayout

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"? 
<manifest xmlns:android="http://schemas.android.com/apk/res/android"package="com.example.suoping"android:versionCode="1"android:versionName="1.0"  <uses-sdkandroid:minSdkVersion="8"android:targetSdkVersion="18" / <applicationandroid:allowBackup="true"android:icon="@drawable/ic_launcher"android:theme="@style/AppTheme"  <activityandroid:name="com.example.suoping.MainActivity"android:label="一键锁屏"  <intent-filter <action android:name="android.intent.action.MAIN" / <category android:name="android.intent.category.LAUNCHER" / </intent-filter </activity <activityandroid:name="com.example.suoping.RemoveActivity"android:label="一键卸载"  <intent-filter <action android:name="android.intent.action.MAIN" / <category android:name="android.intent.category.LAUNCHER" / </intent-filter </activity <receiverandroid:name="com.example.suoping.DeviceAdminSample"android:description="@string/sample_device_admin_description"android:label="@string/sample_device_admin"android:permission="android.permission.BIND_DEVICE_ADMIN"  <meta-dataandroid:name="android.app.device_admin"android:resource="@xml/device_admin_sample" / <intent-filter <action android:name="android.app.action.DEVICE_ADMIN_ENABLED" / </intent-filter </receiver </application 
</manifest

device_admin_sample.xml

 <device-admin xmlns:android="http://schemas.android.com/apk/res/android" <uses-policies <limit-password / <watch-login / <reset-password / <force-lock / <wipe-data / <expire-password / <encrypted-storage / <disable-camera / </uses-policies 
</device-admin

strings.xml

<resources <string name="app_name" 一键锁屏</string <string name="action_settings" Settings</string <string name="hello_world" Hello world!</string <string name="activity_sample_device_admin" 设备管理员</string <string name="sample_device_admin" 管理员</string <string name="sample_device_admin_description" 开启设备管理员，不开启扣2000块</string 
</resources