Android获取长按按键响应

public boolean onKeyLongPress(int keyCode, KeyEvent event) {
// TODO Auto-generated method stub
return super.onKeyLongPress(keyCode, event);
}

不能正常响应的原因：

onKeyDown()中没有对短按，长按事件进行识别。如要对长按事件进行响应，要在onKeyDown()中添加如下代码：

if (event.getRepeatCount() == 0) {
event.startTracking();
isLongPressKey = false;
}else{
isLongPressKey = true;
}

onKeyDown()代码示例如下：

public boolean onKeyDown(int keyCode, KeyEvent event) {
// TODO Auto-generated method stub
Log.d(TAG,"---->>onKeyDown():keyCode="+keyCode);
switch(keyCode){
case KeyEvent.KEYCODE_MENU://需要识别长按事件
case KeyEvent.KEYCODE_ENTER:
case KeyEvent.KEYCODE_DPAD_CENTER:
if (event.getRepeatCount() == 0) {//识别长按短按的代码
event.startTracking();
isLongPressKey = false;
}else{
isLongPressKey = true;
}
return true;
case KeyEvent.KEYCODE_VOLUME_UP:
case KeyEvent.KEYCODE_DPAD_UP:

return true;
case KeyEvent.KEYCODE_VOLUME_DOWN:
case KeyEvent.KEYCODE_DPAD_DOWN:

return true;
}
return super.onKeyDown(keyCode, event);
}

要处理onKeyLongPress和onKeyUp的冲突事件

1、添加变量

private boolean lockLongPressKey;//是否长按

2、在onKeyLongPress中

public boolean onKeyLongPress(int keyCode, KeyEvent event) {
// TODO Auto-generated method stub
lockLongPressKey = true;
return super.onKeyLongPress(keyCode, event);
}

3、在onKeyUp()中要添加冲突处理，如下：

public boolean onKeyUp(int keyCode, KeyEvent event) {
// TODO Auto-generated method stub
Log.d(TAG,"---->> onKeyDown():keyCode="+keyCode);
switch(keyCode){
case KeyEvent.KEYCODE_MENU:
case KeyEvent.KEYCODE_ENTER:
case KeyEvent.KEYCODE_DPAD_CENTER:
if(lockLongPressKey){
lockLongPressKey = false;
return true;
}

return true;
case KeyEvent.KEYCODE_VOLUME_UP:
case KeyEvent.KEYCODE_DPAD_UP:

return true;
case KeyEvent.KEYCODE_VOLUME_DOWN:
case KeyEvent.KEYCODE_DPAD_DOWN:

return true;
}
return super.onKeyUp(keyCode, event);
}

注意问题：

添加长按响应以后要在onKeyUp()中添加长按冲突处理，否则长按事件和UP事件响应会同时起作用。