Android:使 AutoCompleteTextView 下拉菜单换行到 2 行或更多行

Question

我正在编写一个像 API 示例一样使用 AutoCompleteTextView 的 Android 应用程序。问题是我的文本太长，需要在出现下拉菜单时换行。我有一个自定义的 list_item.xml，但只显示一行文本。如果与微调器一起使用，则 list_item.xml 布局换行为 2 行，但与 AutoCompleteTextView 不一起使用。

主.java

public class main extends Activity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        AutoCompleteTextView textView = (AutoCompleteTextView) findViewById(R.id.autocomplete_country);
        ArrayAdapter<String> adapter  = new ArrayAdapter<String>(this, R.layout.list_item, COUNTRIES);
        textView.setAdapter(adapter);
    }  

        static final String[] COUNTRIES = new String[] {
            "This is the first line that is too long and it needs to wrap content",
          "Albania", "Algeria", "American Samoa", "Andorra",
          "This is a second line that also needs to wrap its content",
              "Bahrain", "Bangladesh", "Barbados", "Belarus", "Belgium"
        };
}

主.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:orientation="horizontal"
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content"
    android:padding="5dp">
    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Country" />

    <AutoCompleteTextView android:id="@+id/autocomplete_country"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_marginLeft="5dp"/>        
</LinearLayout>

list_item.xml

<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:padding="10dp"
    android:textSize="16sp"
    android:textColor="#000"    
    >
</TextView>

Answer 1

将 TextView 包裹在布局中并将其用于 ArrayAdapter

<?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" >

    <TextView 
        android:id="@+id/item"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:padding="10dp"
        android:textSize="16sp"
        android:textColor="#000"    
        />

</LinearLayout>

ArrayAdapter 的新调用:

    AutoCompleteTextView textView = (AutoCompleteTextView) findViewById(R.id.autocomplete_country);
    ArrayAdapter<String> adapter  = new ArrayAdapter<String>(getActivity(), R.layout.list_item, R.id.item, COUNTRIES);
    textView.setAdapter(adapter);