1、首先定义 ScreenListener

package com.app.lib;

import android.content.BroadcastReceiver;

import android.content.Context;

import android.content.Intent;

import android.content.IntentFilter;

import android.os.PowerManager;

/**

* Created by ${zyj} on 2016/6/21.

*/

public class ScreenListener {

private Context mContext;

private ScreenBroadcastReceiver mScreenReceiver;

private ScreenStateListener mScreenStateListener;

public ScreenListener(Context context) {

mContext = context;

mScreenReceiver = new ScreenBroadcastReceiver();

}

/**

* screen状态广播接收者

*/

private class ScreenBroadcastReceiver extends BroadcastReceiver {

private String action = null;

@Override

public void onReceive(Context context, Intent intent) {

action = intent.getAction();

if (Intent.ACTION_SCREEN_ON.equals(action)) { // 开屏

mScreenStateListener.onScreenOn();

} else if (Intent.ACTION_SCREEN_OFF.equals(action)) { // 锁屏

mScreenStateListener.onScreenOff();

} else if (Intent.ACTION_USER_PRESENT.equals(action)) { // 解锁

mScreenStateListener.onUserPresent();

}

}

}

/**

* 开始监听screen状态

*

* @param listener

*/

public void begin(ScreenStateListener listener) {

mScreenStateListener = listener;

registerListener();

getScreenState();

}

/**

* 获取screen状态

*/

private void getScreenState() {

PowerManager manager = (PowerManager) mContext

.getSystemService(Context.POWER_SERVICE);

if (manager.isScreenOn()) {

if (mScreenStateListener != null) {

mScreenStateListener.onScreenOn();

}

} else {

if (mScreenStateListener != null) {

mScreenStateListener.onScreenOff();

}

}

}

/**

* 停止screen状态监听

*/

public void unregisterListener() {

mContext.unregisterReceiver(mScreenReceiver);

}

/**

* 启动screen状态广播接收器

*/

private void registerListener() {

IntentFilter filter = new IntentFilter();

filter.addAction(Intent.ACTION_SCREEN_ON);

filter.addAction(Intent.ACTION_SCREEN_OFF);

filter.addAction(Intent.ACTION_USER_PRESENT);

mContext.registerReceiver(mScreenReceiver, filter);

}

public interface ScreenStateListener {// 返回给调用者屏幕状态信息

public void onScreenOn();

public void onScreenOff();

public void onUserPresent();

}

}

2、使用

package com.app.lib;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

private ScreenListener screenListener ;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

screenListener = new ScreenListener( MainActivity.this ) ;

screenListener.begin(new ScreenListener.ScreenStateListener() {

@Override

public void onScreenOn() {

Toast.makeText( MainActivity.this , "屏幕打开了" , Toast.LENGTH_SHORT ).show();

}

@Override

public void onScreenOff() {

Toast.makeText( MainActivity.this , "屏幕关闭了" , Toast.LENGTH_SHORT ).show();

}

@Override

public void onUserPresent() {

Toast.makeText( MainActivity.this , "解锁了" , Toast.LENGTH_SHORT ).show();

}

});

}

}

以上所述是小编给大家介绍的Android 监听锁屏、解锁、开屏 功能代码的相关知识，希望对大家有所帮助！