Android:在Actionbar Spinner中添加两个textview

Question

是否在Actionbar Spinner中添加两个文本视图或字符串?

与Android GMAIL应用程序类似

Answer 1

你可以使用自定义的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" />

Answer 2

ActionBar.setListNavigationCallbacks(...)

这只是一个SpinnerAdapter。如果您熟悉适配器，您可以创建自己的类扩展BaseAdapter并拥有自定义布局。如果您不熟悉适配器，我建议您观看The World of ListView。