一键锁屏、一键删除、设备管理器
设备管理器的操作步骤
1、创建类DeviceAdminReceiver的子类
package com.itheima62.lockscreen; import android.app.admin.DeviceAdminReceiver; public class DeviceAdminSample extends DeviceAdminReceiver { }
2，在清单文件中配置广播接收者
<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>
3，在strings.xml文件中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">简介</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
DevicePolicyManager dpm = (DevicePolicyManager) getSystemService(DEVICE_POLICY_SERVICE); //看使用场景如果不需要这个可以不写 ComponentName who = new ComponentName(this, DeviceAdminSample.class);
6，写功能
dpm.lockNow();//一键锁屏
dmp.wipeData(DevicePolicyManager.WIPE_EXTERNAL_STORAGE);//清除数据
源码实例
DeviceAdminSample.java
package com.itheima62.lockscreen; import android.app.admin.DeviceAdminReceiver; public class DeviceAdminSample extends DeviceAdminReceiver { }
AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.itheima62.lockscreen" 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.itheima62.lockscreen.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.itheima62.lockscreen.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.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> </application> </manifest>
String.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>
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>
MainActivity.java
package com.itheima62.lockscreen; 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)) {//true 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) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.main, menu); return true; } }
RemoveActivity.java
package com.itheima62.lockscreen; 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; import android.widget.Toast; 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){ //调用卸载的界面 /* <intent-filter> <action android:name="android.intent.action.VIEW" /> <action android:name="android.intent.action.DELETE" /> <category android:name="android.intent.category.DEFAULT" /> <data android:scheme="package" /> </intent-filter>*/ // 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 } }
