具有自动提示功能的菜单（AutoCompleteTextView与数组）

具有自动提示功能的菜单（AutoCompleteTextView与数组）

新建一个继承Activity类的AutoCompleteTextViewActivity，并设置布局文件为：autocompletetextview.xml。

在布局文件中直接添加一个AutoCompleteTextView组件和一个Button组件。

<AutoCompleteTextView         android:id="@+id/autocompletetextview_actv01"         android:layout_width="fill_parent"         android:layout_height="wrap_content" />       <Button         android:id="@+id/autocompletetextview_btn"         style="@android:style/Widget.Button.Inset"         android:layout_width="fill_parent"         android:layout_height="wrap_content"         android:text="@string/add01" />

而后在Activity代码中获取这个组件。并设置一个ArrayAdapter适配器。

package lyx.feng.second;   ......   public class AutoCompleteTextViewActivity extends Activity {     private AutoCompleteTextView actv = null;     private List<String> lists = new ArrayList<String>();     private Button btn = null;     private ArrayAdapter<String> adapter = null;       @Override     protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        super.setContentView(R.layout.autocompletetextview);        this.actv = (AutoCompleteTextView) super               .findViewById(R.id.autocompletetextview_actv01);        this.btn = (Button) super.findViewById(R.id.autocompletetextview_btn);        for (int i = 'A'; i < 'Z'; i++) {            for (int j = 'A'; j < 'Z'; j++) {                 lists.add(String.valueOf((char) i) + String.valueOf((char) j)                      + "");              }        }          this.adapter = new ArrayAdapter<String>(this,               android.R.layout.simple_list_item_1, this.lists);        this.actv.setAdapter(adapter);          this.btn.setOnClickListener(new OnClickListener() {              @Override            public void onClick(View v) {               String temp = actv.getText().toString().trim();               for (int i = 0; i < actv.getAdapter().getCount(); i++) {                   if (temp.equals(actv.getAdapter().getItem(i))) {                       Toast.makeText(AutoCompleteTextViewActivity.this,                             "数据已存在！", Toast.LENGTH_SHORT).show();                      return;                   }               }               adapter.add(temp);               adapter.notifyDataSetChanged();               for (int i = 0; i < lists.size(); i++) {                   System.out.print(lists.get(i) + ",");               }            }        });     } }

 

也可以使用MultiAutoCompleteTextView组件，在布局文件中添加：

<MultiAutoCompleteTextView         android:id="@+id/autocompletetextview_mactv01"         android:layout_width="fill_parent"         android:layout_height="wrap_content"         />

在代码中获取MultiAutoCompleteTextView组件后：

this.mactv.setAdapter(adapter);        this.mactv.setTokenizer(new MultiAutoCompleteTextView.CommaTokenizer());