自定义Android spinner样式并添加监听事件

1. 自定义spinner下拉条目的样式custom_spinner.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:gravity="center_vertical"
    android:orientation="horizontal"
    android:padding="10dip" >

    <TextView
        android:id="@+id/label"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="10dp" />

    <ImageView
        android:id="@+id/icon"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="10dp"
        android:src="@drawable/ic_sync_green_holo"
        android:visibility="visible" />

</LinearLayout>

2. 默认选中spinner样式 spinner.xml

<?xml version="1.0" encoding="utf-8"?>
<CheckedTextView xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@android:id/text1"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:gravity="center"
    android:singleLine="true"
    android:textSize="22sp" />

3. 在activity的页面添加spinner控件

        <LinearLayout
                    android:layout_width="match_parent"
                    android:layout_height="match_parent"
                    android:layout_weight="2"
                    android:orientation="horizontal" >

                    <Spinner
                        android:id="@+id/video_call_spinner"
                        android:layout_width="match_parent"
                        android:layout_height="match_parent"
                        android:layout_marginRight="15dp"
                        android:gravity="center_vertical" />
        </LinearLayout>    

4. 在java文件中添加绑定和监听

    ArrayList<String> list = new ArrayList<String>();  
    list.add("Ask every time");   
        list.add("SIM A");   
        list.add("SIM B");   
        list.add("Country code");     
                  
        voiceSpinner=(Spinner)mSimView.findViewById(R.id.voice_call_spinner);  

        ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,R.layout.spinner, list){  
         @Override  
         public View getDropDownView(int position, View convertView, ViewGroup parent) {  
             if(convertView==null){  
                 convertView = getLayoutInflater().inflate(R.layout.custom_spinner, parent, false);  
                 }  
             TextView label = (TextView) convertView.findViewById(R.id.label);  
             ImageView icon = (ImageView) convertView.findViewById(R.id.icon);  
             if(position==2)
                 icon.setVisibility(View.VISIBLE);
             else
                 icon.setVisibility(View.INVISIBLE);

             label.setText(getItem(position));  
               
             return convertView;  
             }  
        };   
        voiceSpinner.setAdapter(adapter); 

        voiceSpinner.setOnItemSelectedListener(new OnItemSelectedListener()  {          
            @Override  
            public void  onItemSelected(AdapterView<?> arg0, View arg1,   
                  int arg2, long arg3) {
                Log.d("mark", "onItemSelected() is invoked!");  
                if(arg2==2)
                    Log.i("wistron","2 selected++++++++++");
            }
         
            @Override
            public void  onNothingSelected(AdapterView<?> arg0) {   
               // TODO Auto-generated method stub

            }
          });