Android Home键监听的实现代码
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：
HomeListener.getInstance().start(this);
移除广播
HomeListener.getInstance().stop(this);
设置监听回调
HomeListener.getInstance().setHomeKeylistener(HomePressListenerlistener）；
添加监听回调
HomeListener.getInstance().addHomeKeyListener(HomePressListenerlistener）
移除监听回调
HomeListener.getInstance().removeHomeKeyListener(HomePressListenerlistener);
移除所有监听回调
HomeListener.getInstance().removeAllHomeKeyListener();
销毁
HomeListener.getInstance().destroy();
工具类代码：
importandroid.content.BroadcastReceiver;
importandroid.content.Context;
importandroid.content.Intent;
importandroid.content.IntentFilter;
importjava.util.ArrayList;
importjava.util.List;
importjava.util.concurrent.atomic.AtomicBoolean;
publicclassHomeListener{
publicstaticHomeKeyListenergetInstance(){
HomeKeyListenerlistener=HomeKeyListener.sListener;
listener.init();
returnlistener;
}
staticclassHomeKeyListener{
privatestaticfinalStringSYSTEM_DIALOG_REASON_RECENT_APPS="recentapps";//home键旁边的最近程序列表键
privatestaticfinalStringSYSTEM_DIALOG_REASON_HOME_KEY="homekey";//按下home键
privatestaticfinalStringSYSTEM_DIALOG_REASON_ASSIST="assist";//某些三星手机的程序列表键
privatestaticAtomicBooleanisDestroy=newAtomicBoolean(true);
privatestaticAtomicBooleanisRegister=newAtomicBoolean(false);
privatestaticHomeKeyListenersListener=newHomeKeyListener();
privateListmPressListeners=newArrayList();
privateHomeReceivermReceiver;
privateIntentFiltermHomeFileter;
privateHomePressListenermHomePressListener;
publicvoidinit(){
if(isDestroy.get()){
this.mPressListeners=newArrayList();
this.mReceiver=newHomeReceiver();
this.mHomeFileter=newIntentFilter(Intent.ACTION_CLOSE_SYSTEM_DIALOGS);
isDestroy.set(false);
}
}
publicsynchronizedvoidstart(Contextcontext){
if(!isRegister.get()){
context.registerReceiver(mReceiver,mHomeFileter);
isRegister.set(true);
}
}
publicsynchronizedvoidstop(Contextcontext){
if(isRegister.get()){
context.unregisterReceiver(mReceiver);
isRegister.set(false);
}
}
publicvoidsetHomeKeylistener(HomePressListenerlistener){
this.mHomePressListener=listener;
}
publicvoidaddHomeKeyListener(HomePressListenerlistener){
mPressListeners.add(listener);
}
publicvoidremoveHomeKeyListener(HomePressListenerlistener){
mPressListeners.add(listener);
}
publicvoidremoveAllHomeKeyListener(){
mPressListeners.clear();
}
publicvoiddestroy(){
this.mPressListeners.clear();
this.mPressListeners=null;
this.mReceiver=null;
this.mHomeFileter=null;
this.mHomePressListener=null;
isDestroy.set(true);
}
publicinterfaceHomePressListener{
voidonHomePress();
voidonHomeRecentAppsPress();
}
classHomeReceiverextendsBroadcastReceiver{
@Override
publicvoidonReceive(Contextcontext,Intentintent){
receive(intent);
}
}
privatevoidreceive(Intentintent){
Stringaction=intent.getAction();
if(action!=null&&action.equals(Intent.ACTION_CLOSE_SYSTEM_DIALOGS)){
Stringreason=intent.getStringExtra("reason");
dispatchPress(reason);
}
}
privatevoiddispatchPress(Stringreason){
switch(reason){
caseSYSTEM_DIALOG_REASON_HOME_KEY:
if(mHomePressListener!=null)mHomePressListener.onHomePress();
for(HomePressListenerlistener:mPressListeners)listener.onHomePress();
break;
caseSYSTEM_DIALOG_REASON_RECENT_APPS:
caseSYSTEM_DIALOG_REASON_ASSIST:
if(mHomePressListener!=null)mHomePressListener.onHomeRecentAppsPress();
for(HomePressListenerlistener: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毛票票。