AutoCompleteTextView 自动填充文本框

实现如图：

xml：

 <AutoCompleteTextView        android:id="@+id/myAutoCompleteTextView"        android:layout_width="fill_parent"        android:layout_height="wrap_content" />

java：

public class Auto extends AppCompatActivity {    private static final String[] myStr = {"aaa","bbb","ccc","aabb","aad"};    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setTitle("Auto");        setContentView(R.layout.activity_auto);        ArrayAdapter<String> aa =                new ArrayAdapter<String>(this,                        android.R.layout.simple_dropdown_item_1line,myStr) {                };        AutoCompleteTextView textView =                (AutoCompleteTextView) findViewById(R.id.myAutoCompleteTextView);        textView.setAdapter(aa);        textView.setThreshold(1);    }