Android：如何将微调选择器设置为自己的图像/图标？ [英] Android: How to set spinner selector to own image/icon?

问题描述

我有搜索和测试在微调框中设置我自己的图像/图标，但我收到错误。

我已经改变了样式设置背景图像，

当我喜欢我找到一个像这样的例子：

 < Spinner style =@ style / Spinnerandroid：spinnerSelector =@ drawable / myspinner_selector/> 
  

这里是myspinner_selector.xml：

 <？xml version =1.0encoding =utf-8？> 
< selector xmlns：android =http://schemas.android.com/apk/res/android> 
< item android：state_first =true
 android：drawable =@ drawable / arrowdown
 /> 
< item android：state_middle =true
 android：drawable =@ drawable / arrowdown
 /> 
< item android：state_last =true
 android：drawable =@ drawable / arrowdown
 /> 
< item android：state_single =true
 android：drawable =@ drawable / arrowdown
 /> 
  

XML 为spinner我得到这个错误：

 找不到资源标识符属性'spinnerSelector'in package'android'`main.xml` 
  

使用这样的微调选择器的样式，但我不能得到它的工作，并且不能在 spinnerSelector 。 android。rel =nofollow> developer.android.com 。

解决方案

1. 将微调框的高度和宽度设置为0dp

   p>



2. 在onClick（）监听器中创建一个按钮，并像下面这样调用微调器的点击操作：

     button.setOnClickListener（new View.OnClickListener（）{
    @Override 
    public void onClick（View v）{
    spin.performClick 
   } 
   }）; 
     




3. 更改按钮文字以符合微调文字。

   
   
   public void onItemSelected（AdapterView<？> parent，View v，int position，long id）{
button.setText（items [position] ;
}





4. 现在您可以轻松更改按钮的图像！ p>

I have searching and testing to set my own image/icon in a Spinner but i get error.

I have alrady with styling set background image but then the spinner icon on the right side not shows anymore.

When i do like i find a example of like this:

<Spinner style="@style/Spinner" android:spinnerSelector="@drawable/myspinner_selector" />

And here is the myspinner_selector.xml:

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_first="true"
   android:drawable="@drawable/arrowdown"
   />    
<item android:state_middle="true" 
   android:drawable="@drawable/arrowdown"
   />       
<item android:state_last="true"
   android:drawable="@drawable/arrowdown"
   />   
<item android:state_single="true"
   android:drawable="@drawable/arrowdown"
   />

But it is in the first XMLfor spinner I get this error:

No resource identifier found for attribute 'spinnerSelector' in package 'android' `main.xml`

All example i can find on internet using the styling of spinner selector like this but i can not get it to work and can not find spinnerSelector in the reference guide on developer.android.com either.

解决方案

I didn't get the answer for changing the spinner image but you can do it..

1. Set the spinner height and width to 0dp

2. Create a button in the onClick() listener and call click action of the spinner like this

   button.setOnClickListener(new View.OnClickListener() {
       @Override
       public void onClick(View v) {
           spin.performClick();
       }
   });
   

3. Change the button text to match the spinner text.

   public void onItemSelected(AdapterView<?> parent, View v, int position, long id) {
       button.setText(items[position]);
   }
   

4. Now you can change the image of the button easily!

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