如何讓GridView的項目位置的x，y正確

Question

我想在同一位置設置對話框的位置，在其clicked..like這個

，但我得到這個

這裏是我的代碼來定位對話框..

public void onItemClick(AdapterView<?> parent, View v, int position, long id) { 
     float positionX = v.getX(); 
     float positionY = v.getY(); 

     LinearLayout container = (LinearLayout) gvGrid.getFocusedChild(); 

     dialog = new Dialog(CW_Emergency.this); 
     dialog.requestWindowFeature(Window.FEATURE_NO_TITLE); 
     dialog.setContentView(R.layout.view_pager_layout); 
     dialog.getWindow().setBackgroundDrawable(new ColorDrawable(android.graphics.Color.TRANSPARENT)); 

     //position of popup 
     WindowManager.LayoutParams params = dialog.getWindow().getAttributes(); 
     params.x = (int) positionX; 
     params.y = (int) positionY; 

     ViewPagerAdapter adapter = new ViewPagerAdapter(container, CW_Emergency.this); 
     viewPager = (ViewPager) dialog.findViewById(R.id.view_pager); 

     dialog.show(); 



    } 

好心告訴我如何正確定位所有屏幕尺寸

Answer 1

您可以使用PopupWindow。

mPopupWindow = new PopupWindow(
        customView, 
        LayoutParams.WRAP_CONTENT, 
        LayoutParams.WRAP_CONTENT 
      ); 

，並顯示它

mPopupWindow.showAsDropDown(ItemInGridView, 0, -1 * ItemInGridView.getHeight(), Gravity.LEFT); 

Answer 2

據我要在正確的位置PopupMenu的顯示對話框會更方便和簡單。爲了實現PopupMenu的...

1. 首先，你必須創建內部菜單資源文件夾菜單資源文件

   <?xml version="1.0" encoding="utf-8"?> 
   <menu xmlns:android="http://schemas.android.com/apk/res/android"> 
   <item android:id="@+id/menu_option1" 
       android:title="Option 1" 
       /> 
   <item android:id="@+id/menu_option2" 
       android:title="Option 2" 
       /> 
   </menu> 
   

2. 實現你onItemClick（）內將以下代碼方法

   public void onItemClick(AdapterView<?> parent, View v, int position, long id) { 
   
   PopupMenu popup = new PopupMenu(this, v); 
   // Inflate the menu from xml 
   popup.getMenuInflater().inflate(R.menu.popup_menu, popup.getMenu()); 
   // Setup menu item selection 
   popup.setOnMenuItemClickListener(new PopupMenu.OnMenuItemClickListener() { 
       public boolean onMenuItemClick(MenuItem item) { 
        switch (item.getItemId()) { 
        case R.id.menu_option1: 
         Toast.makeText(MainActivity.this, "Option 1", Toast.LENGTH_SHORT).show(); 
         return true; 
        case R.id.menu_option2: 
         Toast.makeText(MainActivity.this, "Option 2", Toast.LENGTH_SHORT).show(); 
         return true; 
        default: 
         return false; 
        } 
       } 
   }); 
   // Show the menu 
   popup.show(); 
   
   } 
   

PopupMenu將被顯示爲exa靠近您要點擊的視圖。