<activity 
   android:name="com.itydl.lockscreen.Remove" 
   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> 

package com.itydl.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; 
 
public class Remove extends Activity { 
 @Override 
 protected void onCreate(Bundle savedInstanceState) { 
  // 
  super.onCreate(savedInstanceState); 
  setContentView(R.layout.activity_remove); 
 } 
  
 public void remove(View v){ 
  //调用卸载的界面，要去上层源码中看一下卸载界面的意图是什么。通过查看源码，如下： 
  /** 
   * <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> 
   */ 
   
  //在卸载之前首先要取消设激活设备管理器 
  //获取设备管理器 
  DevicePolicyManager dpm = (DevicePolicyManager) getSystemService(DEVICE_POLICY_SERVICE); 
  ComponentName who = new ComponentName(this,DeviceAdminSample.class); 
  dpm.removeActiveAdmin(who);//Remove a current administration component. This can only be called by the application that owns the administration component 
   
  //卸载，启动卸载界面 
  Intent remove = new Intent("android.intent.action.DELETE"); 
  remove.addCategory("android.intent.category.DEFAULT"); 
  remove.setData(Uri.parse("package:"+getPackageName()));//表示卸载本程序，Return the name of this application's package. 
 
  startActivity(remove);//卸载用户apk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" > --------------------这里一定修改。 
 
 <Button 
  android:onClick="remove" 
  android:layout_width="wrap_content" 
  android:layout_height="wrap_content" 
  android:text="一键卸载" /> 
 
</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"> 
 ---------------------设置为透明色 
  
 
</RelativeLayout> 

@Override 
protected void onCreate(Bundle savedInstanceState) { 
 super.onCreate(savedInstanceState); 
 dmp = (DevicePolicyManager) getSystemService(DEVICE_POLICY_SERVICE); 
 lockScreen(null); 
}