android实现一键锁屏和一键卸载的方法实例

<receiver  android: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-data   android: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>

 <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>

 <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>

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

dpm.lockNow();一键锁屏

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

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; @Override protected 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);  } } @Override public boolean onCreateOptionsMenu(Menu menu)  {  getMenuInflater().inflate(R.menu.main, menu);  return true; }}

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{ @Override protected void onCreate(Bundle savedInstanceState)  {  // TODO Auto-generated method stub  super.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 }}

<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>

<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>

<?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-sdk  android:minSdkVersion="8"  android:targetSdkVersion="18" /> <application  android:allowBackup="true"  android:icon="@drawable/ic_launcher"  android:theme="@style/AppTheme" >  <activity   android: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>   <activity   android: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>  <receiver   android: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-data    android: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 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>

<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>