android实现一键锁屏和一键卸载的方法实例
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
<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.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;
@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;
}
}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
{
@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
}
}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-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_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 总结
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原始发表：2020-09-11
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