Android中屏蔽 电源键长按、Home键、Home长按

Android中屏蔽电源键长按、Home键、Home长按

 这几个“按键”的触发，都会产生一个 Action == Intent.ACTION_CLOSE_SYSTEM_DIALOGS 的通知区分他们三个的不同事件的参数，就是随着 Intent 带过来的 reason 字符串，分别对应：

"电源键长按"（globalscreen）

"Home键"（homekey）

"Home长按"（recentapps）

我们可以使用广播来实现，如：

package com.jumpinus.test;

import android.app.Activity;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.Bundle;

public class MainActivity extends Activity {

    private MyBroadCastReceiver myBroadCastReceiver;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);


        myBroadCastReceiver = new MyBroadCastReceiver();

    }
    @Override
    protected void onResume() {
        // TODO Auto-generated method stub
        super.onResume();
        IntentFilter intentFilter = new IntentFilter();
        intentFilter.addAction(Intent.ACTION_CLOSE_SYSTEM_DIALOGS);

        System.out.println("I'm coming, myBroadCastReceiver注册了!");
        registerReceiver(myBroadCastReceiver, intentFilter);
    }
    private class MyBroadCastReceiver extends BroadcastReceiver{

        @Override
        public void onReceive(Context context, Intent intent) {
            //你自己先把 reasons == homekey 和 长按homekey 排除，剩下的做下面的处理
            String reason = intent.getStringExtra("reason");
            if (intent.getAction().equals(Intent.ACTION_CLOSE_SYSTEM_DIALOGS)){
                System.out.println("Intent.ACTION_CLOSE_SYSTEM_DIALOGS : " + intent.getStringExtra("reason"));

                if (intent.getExtras()!=null && intent.getExtras().getBoolean("myReason")){
                    myBroadCastReceiver.abortBroadcast();
                }else if (reason != null){

                    if (reason.equalsIgnoreCase("globalactions")){

                        //屏蔽电源长按键的方法：
                        Intent myIntent = new Intent(Intent.ACTION_CLOSE_SYSTEM_DIALOGS);
                        myIntent.putExtra("myReason", true);
                        context.sendOrderedBroadcast(myIntent, null);
                        System.out.println("电源  键被长按");

                    }else if (reason.equalsIgnoreCase("homekey")){

                        //屏蔽Home键的方法
                        //在这里做一些你自己想要的操作,比如重新打开自己的锁屏程序界面，这样子就不会消失了
                        System.out.println("Home 键被触发");

                    }else if (reason.equalsIgnoreCase("recentapps")){

                        //屏蔽Home键长按的方法
                        System.out.println("Home 键被长按");
                    }
                }
            }
        }

    }

    @Override
    protected void onPause() {
        // TODO Auto-generated method stub
        super.onPause();

        System.out.println("I get out, myBroadCastReceiver注销了!");
        unregisterReceiver(myBroadCastReceiver);
    }
}