从Android的菜单选项不工作弹出窗口 [英] popup window from android options menu not working

问题描述

其实我显示弹出式窗口（自定义布局）时，选项菜单项，并单击我的选项菜单是底部到屏幕（splitActionBarWhenNarrow）。我是得到一些异常，请帮助我
code：

 开关（item.getItemId（））{
    案例R.id.redid：        Toast.makeText（MainActivity.this，红色，Toast.LENGTH_SHORT）.show（）;
        打破;
    案例R.id.blueid：
        Toast.makeText（MainActivity.this，蓝色，Toast.LENGTH_SHORT）.show（）;
        打破;
   案例R.id.greenid：  LayoutInflater吹气=（LayoutInflater）getSystemService（Context.LAYOUT_INFLATER_SERVICE）;
  查看popupview = inflater.inflate（R.layout.popuplayout，NULL）;
  PopupWindow popwindow =新PopupWindow（popupview，LayoutParams.WRAP_CONTENT，LayoutParams.WRAP_CONTENT）;
  popw​​indow.showAsDropDown（item.getActionView（），100，100）;
 

解决方案

尝试以这种方式：

 开关（item.getItemId（））{
    案例R.id.redid：        Toast.makeText（MainActivity.this，红色，Toast.LENGTH_SHORT）.show（）;
        打破;
    案例R.id.blueid：
        Toast.makeText（MainActivity.this，蓝色，Toast.LENGTH_SHORT）.show（）;
        打破;
   案例R.id.greenid：
        initiatePopupWindow（）;
        打破;
   }
 

和外面的onCreate（）粘贴：

 私人PopupWindow pwindo;私人无效initiatePopupWindow（）{
尝试{
//我们需要得到LayoutInflater的实例
LayoutInflater吹气=（LayoutInflater）PopupActivity.this
.getSystemService（Context.LAYOUT_INFLATER_SERVICE）;
查看布局= inflater.inflate（R.layout.popup，（ViewGroup中）findViewById（R.id.popup_element））;
pwindo =新PopupWindow（布局，350，350，TRUE）;
pwindo.showAtLocation（布局，Gravity.CENTER，0，0）;btnClosePopup =（按钮）layout.findViewById（R.id.btn_close_popup）;
btnClosePopup.setOnClickListener（cancel_button_click_listener）;}赶上（例外五）{
e.printStackTrace（）;
}
}
 

我觉得这种方式可能是你的问题会得到解决。

Actually I am showing popup window(custom layout) when options menu item clicked and my options menu are bottom to the screen(splitActionBarWhenNarrow).I am getting some exception please help me code:

    switch (item.getItemId()) {
    case R.id.redid:

        Toast.makeText(MainActivity.this,"red color", Toast.LENGTH_SHORT).show();
        break;
    case R.id.blueid:
        Toast.makeText(MainActivity.this,"blue color", Toast.LENGTH_SHORT).show();
        break;
   case R.id.greenid:

  LayoutInflater inflater=(LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
  View popupview=inflater.inflate(R.layout.popuplayout,null);
  PopupWindow popwindow=new PopupWindow(popupview,LayoutParams.WRAP_CONTENT,LayoutParams.WRAP_CONTENT);
  popwindow.showAsDropDown(item.getActionView(), 100, 100);  

解决方案

Try in this manner:

    switch (item.getItemId()) {
    case R.id.redid:

        Toast.makeText(MainActivity.this,"red color", Toast.LENGTH_SHORT).show();
        break;
    case R.id.blueid:
        Toast.makeText(MainActivity.this,"blue color", Toast.LENGTH_SHORT).show();
        break;
   case R.id.greenid:
        initiatePopupWindow();
        break;
   }

and outside onCreate() paste this:

private PopupWindow pwindo;

private void initiatePopupWindow() { 
try { 
// We need to get the instance of the LayoutInflater 
LayoutInflater inflater = (LayoutInflater) PopupActivity.this 
.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
View layout = inflater.inflate(R.layout.popup,(ViewGroup)

findViewById(R.id.popup_element)); 
pwindo = new PopupWindow(layout, 350, 350, true); 
pwindo.showAtLocation(layout, Gravity.CENTER, 0, 0);

btnClosePopup = (Button) layout.findViewById(R.id.btn_close_popup); 
btnClosePopup.setOnClickListener(cancel_button_click_listener);

} catch (Exception e) { 
e.printStackTrace(); 
} 
}

I think in this manner may be your problem will be solved.

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