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Android Home键监听的实现代码

转载 作者:qq735679552 更新时间:2022-09-28 22:32:09 25 4
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这篇CFSDN的博客文章Android Home键监听的实现代码由作者收集整理,如果你对这篇文章有兴趣,记得点赞哟.

之前的一个项目需要监听home键的事件,发现用dispatchkeyevent无法实现监听,后来查了些资料,才知道home键不能用常规的按键事件监听,需要使用广播的方法。下面是我封装的一个工具类。根据自己实际需要修改吧.

注册广播:

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homelistener.getinstance().start( this );

移除广播 。

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homelistener.getinstance().stop( this );

设置监听回调 。

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homelistener.getinstance().sethomekeylistener(homepresslistener listener);

添加监听回调 。

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homelistener.getinstance().addhomekeylistener(homepresslistener listener)

移除监听回调 。

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homelistener.getinstance().removehomekeylistener(homepresslistener listener);

移除所有监听回调 。

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homelistener.getinstance().removeallhomekeylistener();

销毁 。

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homelistener.getinstance().destroy();

工具类代码:

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import android.content.broadcastreceiver;
import android.content.context;
import android.content.intent;
import android.content.intentfilter;
 
import java.util.arraylist;
import java.util.list;
import java.util.concurrent.atomic.atomicboolean;
 
public class homelistener {
  public static homekeylistener getinstance() {
   homekeylistener listener = homekeylistener.slistener;
   listener.init();
   return listener;
  }
 
  static class homekeylistener {
   private static final string system_dialog_reason_recent_apps = "recentapps" ; //home键旁边的最近程序列表键
   private static final string system_dialog_reason_home_key = "homekey" ; //按下home键
   private static final string system_dialog_reason_assist = "assist" ; //某些三星手机的程序列表键
 
   private static atomicboolean isdestroy = new atomicboolean( true );
   private static atomicboolean isregister = new atomicboolean( false );
   private static homekeylistener slistener = new homekeylistener();
   private list<homepresslistener> mpresslisteners = new arraylist<homepresslistener>();
   private homereceiver mreceiver;
   private intentfilter mhomefileter;
   private homepresslistener mhomepresslistener;
   public void init() {
    if (isdestroy.get()) {
     this .mpresslisteners = new arraylist<homepresslistener>();
     this .mreceiver = new homereceiver();
     this .mhomefileter = new intentfilter(intent.action_close_system_dialogs);
     isdestroy.set( false );
    }
   }
 
   public synchronized void start(context context) {
    if (!isregister.get()) {
     context.registerreceiver(mreceiver, mhomefileter);
     isregister.set( true );
    }
   }
 
   public synchronized void stop(context context) {
    if (isregister.get()) {
     context.unregisterreceiver(mreceiver);
     isregister.set( false );
    }
   }
 
   public void sethomekeylistener(homepresslistener listener) {
    this .mhomepresslistener = listener;
   }
 
   public void addhomekeylistener(homepresslistener listener) {
    mpresslisteners.add(listener);
   }
 
   public void removehomekeylistener(homepresslistener listener) {
    mpresslisteners.add(listener);
   }
 
   public void removeallhomekeylistener() {
    mpresslisteners.clear();
   }
 
   public void destroy() {
    this .mpresslisteners.clear();
    this .mpresslisteners = null ;
    this .mreceiver = null ;
    this .mhomefileter = null ;
    this .mhomepresslistener = null ;
    isdestroy.set( true );
   }
 
   public interface homepresslistener {
    void onhomepress();
    void onhomerecentappspress();
   }
 
   class homereceiver extends broadcastreceiver {
    @override
    public void onreceive(context context, intent intent) {
     receive(intent);
    }
   }
 
   private void receive(intent intent) {
    string action = intent.getaction();
    if (action != null && action.equals(intent.action_close_system_dialogs)) {
     string reason = intent.getstringextra( "reason" );
     dispatchpress(reason);
    }
   }
 
   private void dispatchpress(string reason) {
    switch (reason) {
     case system_dialog_reason_home_key:
      if (mhomepresslistener != null ) mhomepresslistener.onhomepress();
      for (homepresslistener listener : mpresslisteners) listener.onhomepress();
      break ;
 
     case system_dialog_reason_recent_apps:
     case system_dialog_reason_assist:
      if (mhomepresslistener != null ) mhomepresslistener.onhomerecentappspress();
      for (homepresslistener listener : mpresslisteners) listener.onhomerecentappspress();
      break ;
 
    }
   }
  }
}

以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持我.

原文链接:https://www.jianshu.com/p/ad937a3ca243 。

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