AutoCompleteTextView: 就是一个带自动提示的EditText,当输入字符时,会出现提示.
android:completionThreshold
输入几个字符时提示
android:completionHint/setCompletionHint(CharSequence)
设置出现下拉列表的提示标题
android:dropDownHeight/setDropHeight(int)
设置下拉列表的高度
android:dropDownWidth/setDropWidth(int)
设置下拉列表的宽度
android:popupBackground/setDropDownbackgroundResource(int)
设置下拉列表的背景
在Android程序中,为了展示数据,通常会用到一个Adapter的接口
setAdapter()设置提示内容的Adapter.
MultiAutoCompleteTextView是多选选项
使用MultiAutoCompleteTextView必须实现MultiAutoCompleteTextView.Tokenizer接口
用于声明用于选项与选项之间分隔的符号,一般如不特殊指定,可以使用Android为我们提供的实现类MultiAutoCompleteTextView.CommaTokenizer,它设定使用英文逗号","进行分隔选项.
例子：
1. <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
2. "http://schemas.android.com/tools"
3. "match_parent"
4. "match_parent"
5. "vertical"
6. ".MainActivity" >
7.
8. "match_parent"
9. "wrap_content"
10. "horizontal">
11.
12. <TextView
13. "wrap_content"
14. "wrap_content"
15. "单选搜索"
16. "HardcodedText" />
17.
18. "@+id/autoText"
19. "match_parent"
20. "wrap_content"
21. />
22.
23. </LinearLayout>
24. "match_parent"
25. "wrap_content">
26. <TextView
27. "wrap_content"
28. "wrap_content"
29. "多选搜索"
30. "HardcodedText" />
31.
32. "@+id/autoMultiText"
33. "match_parent"
34. "wrap_content"
35. />
36. </LinearLayout>
37.
38.
39. </LinearLayout>
1. package com.light.android.study;
2.
3. import android.app.Activity;
4. import android.os.Bundle;
5. import android.view.Gravity;
6. import android.view.View;
7. import android.view.View.OnClickListener;
8. import android.widget.ArrayAdapter;
9. import android.widget.AutoCompleteTextView;
10. import android.widget.CheckBox;
11. import android.widget.CompoundButton;
12. import android.widget.MultiAutoCompleteTextView;
13. import android.widget.MultiAutoCompleteTextView.CommaTokenizer;
14. import android.widget.RadioGroup;
15. import android.widget.RadioGroup.OnCheckedChangeListener;
16. import android.widget.Toast;
17. import android.widget.ToggleButton;
18.
19. public class MainActivity extends Activity {
20.
21. private AutoCompleteTextView autoText;
22. private MultiAutoCompleteTextView autoMultiText;
23. private String[] keywords = {
24. "ab","abc","abdfdf","abnsd","abdfff"
25. };
26. @Override
27. protected void onCreate(Bundle savedInstanceState) {
28. super.onCreate(savedInstanceState);
29. setContentView(R.layout.activity_main);
30. init();
31. initAdapter();
32. }
33.
34. private void init(){
35. autoText = (AutoCompleteTextView) findViewById(R.id.autoText);
36. autoMultiText = (MultiAutoCompleteTextView) findViewById(R.id.autoMultiText);
37. }
38.
39. private void initAdapter(){
40. new ArrayAdapter<String>(this, android.R.layout.simple_dropdown_item_1line, keywords);
41. autoText.setAdapter(adapter);
42. autoMultiText.setAdapter(adapter);
43. new MultiAutoCompleteTextView.CommaTokenizer());
44. }
45.
46.
47. }
效果：
