Android：將兩個TextViews添加到Actionbar Spinner

Question

是否有在Actionbar Spinner中添加兩個文本視圖或字符串的方法？

類似於Android GMAIL應用程序的功能。

Answer 1

ActionBar.setListNavigationCallbacks(...)

這只是一個SpinnerAdapter。如果您熟悉適配器，則可以讓自己的課程延伸至BaseAdapter並且具有自定義佈局。如果你對適配器不熟悉，我建議你看The World of ListView。

Answer 2

您可以使用自定義ArrayAdapter：

public class spinnerAdapter extends ArrayAdapter { 
     private LayoutInflater inflater; 
     public spinnerAdapter(Context context, int textViewResourceId) { 
      super(context, textViewResourceId); 
      inflater = LayoutInflater.from(context); 
     } 

     @Override 
     public View getView(int position, View convertView, ViewGroup parent) { 
      ViewHolder holder; 

      if(convertView == null){ 
       holder = new ViewHolder(); 
       convertView = inflater.inflate(R.layout.spinner_text_layout, null); 
       holder.text1 = (TextView)convertView.findViewById(R.id.spinnerText1); 
       holder.text2 = (TextView)convertView.findViewById(R.id.spinnerText2); 
       convertView.setTag(R.layout.spinner_text_layout, holder); 
      } else{ 
       holder = (ViewHolder)convertView.getTag(R.layout.spinner_text_layout); 
      } 

      holder.text1.setText("Position: "); 
      holder.text2.setText(position); 

      return convertView; 
      } 

     public View getDropDownView(int position, View convertView, ViewGroup parent) { 
      ViewHolder2 holder; 

      if(convertView == null){ 
       holder = new ViewHolder2(); 
       convertView = inflater.inflate(R.layout.spinner_text_layout, null); 
       holder.text1 = (TextView)convertView.findViewById(R.id.spinnerText1); 
       holder.text2 = (TextView)convertView.findViewById(R.id.spinnerText2); 
       convertView.setTag(R.layout.spinner_text_layout, holder); 
      } else{ 
       holder = (ViewHolder2)convertView.getTag(R.layout.spinner_text_layout); 
      } 

      holder.text1.setText("Position: "); 
      holder.text2.setText(position); 

      return convertView; 
      } 

     static class ViewHolder{ 
      TextView text1; 
      TextView text2; 
     } 

     static class ViewHolder2{ 
      TextView text1; 
      TextView text2; 
     } 

    } 

spinner_text_layout.xml：

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
android:layout_width="fill_parent" 
android:layout_height="fill_parent" > 

<TextView 
    android:id="@+id/spinnerText1" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:layout_alignParentLeft="true" 
    android:layout_alignParentTop="true" 
    android:layout_marginLeft="18dp" 
    android:layout_marginTop="16dp" 
    android:text="Medium Text" 
    android:textAppearance="?android:attr/textAppearanceMedium" /> 

<TextView 
    android:id="@+id/spinnerText2" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:layout_alignBottom="@+id/textView1" 
    android:layout_alignParentRight="true" 
    android:layout_marginRight="23dp" 
    android:text="Medium Text" 
    android:textAppearance="?android:attr/textAppearanceMedium" />