使用AutoCompleteTextView很简单,只要为它设置一个Adapter,该Adapter封装了AutoCompleteTextView预设的提示文本。
代码如下:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:orientation="vertical" android:layout_width="match_parent" android:layout_height="match_parent"> <!-- 定义一个自动完成文本框 --> <AutoCompleteTextView android:id="@+id/auto" android:layout_width="match_parent" android:layout_height="wrap_content" android:completionHint="请选您喜欢的图书" android:dropDownHorizontalOffset="20dp" android:completionThreshold="1"/> </LinearLayout>
import android.app.Activity; import android.os.Bundle; import android.widget.ArrayAdapter; import android.widget.AutoCompleteTextView; public class AutoCompleteTextViewActivity extends Activity { // 定义字符串数组,作为提示的文本 String[] books = new String[] { "疯狂Java讲义", "疯狂Ajax讲义", "疯狂XML讲义", "疯狂Workflow讲义" }; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.autocompletetextview); // 创建一个ArrayAdapter,封装数组 ArrayAdapter<String> aa = new ArrayAdapter<String>(this, android.R.layout.simple_dropdown_item_1line, books); AutoCompleteTextView actv = (AutoCompleteTextView) findViewById(R.id.auto); //设置Adapter actv.setAdapter(aa); } }