//LockScreen 继承自 DeviceAdminReceiver mDeviceAdminSample = new ComponentName(Controller.this, LockScreen.class); //得到当前设备管理器有没有激活 boolean active = mDPM.isAdminActive(mDeviceAdminSample); if (!active) { //如果没有激活的话,就去提示用户激活(第一次运行程序时) getAdmin(); }else{ //如果已经激活的话,就执行立即锁屏 mDPM.lockNow(); }
// killMyself ,锁屏之后就立即kill掉我们的Activity,避免资源的浪费; android.os.Process.killProcess(android.os.Process.myPid()); } public void getAdmin() { // Launch the activity to have the user enable our admin. Intent intent = new Intent(DevicePolicyManager.ACTION_ADD_DEVICE_ADMIN); intent.putExtra(DevicePolicyManager.EXTRA_DEVICE_ADMIN, mDeviceAdminSample); intent.putExtra(DevicePolicyManager.EXTRA_ADD_EXPLANATION, "欢迎您的使用!"); startActivityForResult(intent, RESULT_ENABLE); }
import android.app.admin.DeviceAdminReceiver;
import android.app.admin.DevicePolicyManager;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;public class LockScreen extends DeviceAdminReceiver {
static final int RESULT_ENABLE = 1; public static class Controller extends Activity { DevicePolicyManager mDPM;
ComponentName mDeviceAdminSample; @Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//首先我们要获得android设备管理代理
mDPM = (DevicePolicyManager) getSystemService(Context.DEVICE_POLICY_SERVICE);
//LockScreen 继承自 DeviceAdminReceiver
mDeviceAdminSample = new ComponentName(Controller.this,
LockScreen.class);
//得到当前设备管理器有没有激活
boolean active = mDPM.isAdminActive(mDeviceAdminSample);
if (!active) {
//如果没有激活的话,就去提示用户激活(第一次运行程序时)
getAdmin();
}else{
//如果已经激活的话,就执行立即锁屏
mDPM.lockNow();
}
// killMyself ,锁屏之后就立即kill掉我们的Activity,避免资源的浪费;
android.os.Process.killProcess(android.os.Process.myPid());
} public void getAdmin() {
// Launch the activity to have the user enable our admin.
Intent intent = new Intent(DevicePolicyManager.ACTION_ADD_DEVICE_ADMIN);
intent.putExtra(DevicePolicyManager.EXTRA_DEVICE_ADMIN,
mDeviceAdminSample);
intent.putExtra(DevicePolicyManager.EXTRA_ADD_EXPLANATION,
"欢迎您的使用!");
startActivityForResult(intent, RESULT_ENABLE);
}
}
}manifest<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
android:versionCode="1"
android:versionName="1.0" package="com.microdu.lockscreen">
<uses-sdk android:minSdkVersion="8" /> <application android:label="@string/app_name"
android:icon="@drawable/icon" > <activity android:name="com.microdu.lockscreen.LockScreen$Controller" android:theme="@android:style/Theme.Translucent">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.DEFAULT" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<receiver android:name="com.microdu.lockscreen.LockScreen"
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>
比如我又一个button,我点一下,然后就黑屏,就跟那个一键黑屏一样,
在按开机键(或者其他)就能点亮屏幕,默认进到锁屏,之后都是默认行为了
这就是你要的