具有自動提示功能的菜單（AutoCompleteTextView與數組）

具有自動提示功能的菜單（AutoCompleteTextView與數組）

新建一個繼承Activity類的AutoCompleteTextViewActivity，並設置佈局文件爲：autocompletetextview.xml。

在佈局文件中直接添加一個AutoCompleteTextView組件和一個Button組件。

<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" />

而後在Activity代碼中獲取這個組件。並設置一個ArrayAdapter適配器。

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,

                            "數據已存在！", 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組件，在佈局文件中添加：

<MultiAutoCompleteTextView

        android:id="@+id/autocompletetextview_mactv01"

        android:layout_width="fill_parent"

        android:layout_height="wrap_content"

        />

在代碼中獲取MultiAutoCompleteTextView組件後：

this.mactv.setAdapter(adapter);

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