描述:在Activity中(Fragment)显示dialog时,此dailog会自动获取本屏幕的焦点,因此它会自动拦截你对物理按键的操作,而有时你不需要它拦截,或者只是让父布局做此操作,那么只需要在dialog的监听事件中做一些操作即可(如果是MVP架构模式,在里面尽量少做业务操作)
思路:直接实现DialogInterface的onKeyListener()的监听
DialogInterface.onKeyListener listener=new DialogInterface.onKeyListener(){
@Override
public boolean onKey(DialogInterface dialog,int keyCode,KeyEvent event){
if(keyCode == KeyEvent.KEYCODE_BACK && event.getRepeatCount()==0){
getActivity().finish();
dialog.dismiss();
//让dialog不拦截事件
return false;
}
return fasle;
}
将listener传递进dialog中,用以监听
private void showDialog(){
AlertDialog builder=new AlertDialog.Builder(getActivityContext());
builder.setTitle("");
builder.setMessage("");
builder.setPostiveButton("确定",new View.OnClickListener(){
@Override
public void onClick(View v){
//
}
});
Dialog dialog=builder.CreateDialog();
dialog.setOnKeyListener(listener);
dialog.show();
}