控件AutoCompleteTextView 自动提示

﹏ヽ暗。殇╰゛Y 2022-09-26 11:51 198阅读 0赞

在输入框中输入我们想要输入的信息就会出现其他与其相关的提示信息，这种效果在Android中是用AutoCompleteTextView实现的。

![131644517621390.jpg][]

![复制代码][copycode.gif]

public class MainActivity extends Activity {
    private AutoCompleteTextView autotext;
    private ArrayAdapter<String> arrayAdapter;
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.test);
    
            autotext =(AutoCompleteTextView) findViewById(R.id.autotext);
            String [] arr={"aa","aab","aac"};
            arrayAdapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1,arr);
            autotext.setAdapter(arrayAdapter);
        }
    
    }

![复制代码][copycode.gif]

<table style="width:700px"> 
 <tbody> 
  <tr> 
   <th colspan="2">AutoCompleteTextView常用属性</th> 
  </tr> 
  <tr> 
   <td>android:completionHint</td> 
   <td>设置出现在下拉菜单中的提示标题</td> 
  </tr> 
  <tr> 
   <td>android:completionThreshold</td> 
   <td>设置用户至少输入多少个字符才会显示提示</td> 
  </tr> 
  <tr> 
   <td>android:dropDownHorizontalOffset</td> 
   <td>下拉菜单于文本框之间的水平偏移。默认与文本框左对齐</td> 
  </tr> 
  <tr> 
   <td>android:dropDownHeight</td> 
   <td>下拉菜单的高度</td> 
  </tr> 
  <tr> 
   <td>android:dropDownWidth</td> 
   <td>下拉菜单的宽度</td> 
  </tr> 
  <tr> 
   <td>android:singleLine</td> 
   <td>单行显示</td> 
  </tr> 
  <tr> 
   <td>android:dropDownVerticalOffset</td> 
   <td>垂直偏移量</td> 
  </tr> 
 </tbody> 
</table>

[131644517621390.jpg]: /images/20220717/7c5b3219cc2c418cb4009e918a3d2813.png
[copycode.gif]: /images/20220717/a7eb04d11bd143f4a209c45547119f22.png