Question

我正在编写一个使用AutoCompleteTextView的Android应用程序，就像API示例一样。问题是我的文本太长，需要在下拉列表时换行。我有一个自定义list_item.xml，但只显示一行文本。如果与微调器一起使用，list_item.xml布局将包装为2行，但不包含AutoCompleteTextView。

main.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"
        };
}

main.xml中

<?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包装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>

新呼叫ArrayAdapter：

    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);

Answer 2

简单方法：
adapter = new ArrayAdapter（getApplicationContext（）， android.R.layout.two_line_list_item ，android.R.id.text1，....）;

android.R.layout.two_line_list_item这很容易改变。

Android：将AutoCompleteTextView下拉包装为2行或更多行

2 个答案: