Android——AutoCompleteTextView

<1>简介

在我们平常上网的时候经常会用到谷歌或百度，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，非常方便。这种效果在Android中是用AutoCompleteTextView实现的

AutoCompleteTextView是一个可以编辑的文本view，当用户键入时，会自动显示完成建议信息。

建议列表显示在下拉列表框中，可以选中某项代替编辑框里的内容。

当用户点击回车键时，或者什么也没有选中点击ENTER建时下拉列表会自动消失。

建议列表是从一个数据适配器获取的数据。

<2>范例

Java代码








package xiaosi.AutoCompleteTextView;

import android.app.Activity;
import android.os.Bundle;
import android.widget.ArrayAdapter;
import android.widget.AutoCompleteTextView;

public class AutoCompleteTextViewActivity extends Activity {

private AutoCompleteTextView autoCompleteTextView = null;
private final String[] Citys = new String[] {
"Belgium", "France", "Italy", "Germany", "Spain" ,"Sppp","Itaggg"

};
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);

autoCompleteTextView = (AutoCompleteTextView)findViewById(R.id.auto);

//配置设配器
ArrayAdapter<String> arrayAdapter = new ArrayAdapter<String>
(AutoCompleteTextViewActivity.this, android.R.layout.simple_dropdown_item_1line, Citys);
//
autoCompleteTextView.setAdapter(arrayAdapter);
}
}

package xiaosi.AutoCompleteTextView;

import android.app.Activity;
import android.os.Bundle;
import android.widget.ArrayAdapter;
import android.widget.AutoCompleteTextView;

public class AutoCompleteTextViewActivity extends Activity {

private AutoCompleteTextView autoCompleteTextView = null;
private final String[] Citys = new String[] {
"Belgium", "France", "Italy", "Germany", "Spain" ,"Sppp","Itaggg"
};
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);

autoCompleteTextView = (AutoCompleteTextView)findViewById(R.id.auto);

//配置设配器
ArrayAdapter<String> arrayAdapter = new ArrayAdapter<String>
(AutoCompleteTextViewActivity.this, android.R.layout.simple_dropdown_item_1line, Citys);
//
autoCompleteTextView.setAdapter(arrayAdapter);
}
}

效果图：