还记得百度搜索的时候下面自动弹出的提示信息吗,现在使用AutoCompleteTextView可以轻松实现这个功能了,以前一直以为会很难做。。。
老规矩,废话少说直接贴代码:
main.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/hello_world" />
<AutoCompleteTextView
android:id="@+id/act_text"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</LinearLayout>
MainActivity.java
public class MainActivity extends Activity {
private AutoCompleteTextView textView;
private String[] presidents = {
"Dwight D. Eisenhower",
"John F. Kennedy",
"Lyndon B. Johnson",
"Richard Nixon",
"Gerald Ford",
"Jimmy Carter",
"George H. W. Bush",
"Bill Clinton",
"George W. Bush",
"Barack Obama"
};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
initView();
}
private void initView(){
textView = (AutoCompleteTextView) findViewById(R.id.act_text);
ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,android.R.layout.simple_spinner_dropdown_item,presidents);
textView.setThreshold(3);
textView.setAdapter(adapter);
}
}
参考书籍:《Android4编程入门经典》