问题描述
我有一个 MultiAutoCompleteTextView
。它工作正常。但我想说明建议下拉列表,只有当它的用户类型@(比如标记用户的Facebook应用程序)。我不知道该怎么做。这里是我的code:
mChatbox =(MultiAutoCompleteTextView)findViewById(R.id.chatbox);ArrayAdapter<串GT;适配器=新ArrayAdapter<串GT;(这一点,android.R.layout.simple_dropdown_item_1line,用户列表);
mChatBox.setAdapter(适配器);
mChatBox.setTokenizer(新SpaceTokenizer());公共类SpaceTokenizer实现MultiAutoCompleteTextView.Tokenizer {公众诠释findTokenStart(CharSequence的文字,INT光标){
INT I =光标;
而(ⅰ大于0&放大器;&放大器;!text.charAt(I - 1)=''){
一世 - ;
}
而(ⅰ&所述;光标&放大器;&放大器; text.charAt(ⅰ)==''){
我++;
}
返回我;
}公众诠释findTokenEnd(CharSequence的文字,INT光标){
INT I =光标;
INT LEN = text.length(); 而(I< LEN){
如果(text.charAt(ⅰ)==''){
返回我;
}其他{
我++;
}
} 返回LEN;
}公众的CharSequence terminateToken(CharSequence的文字){
INT I = text.length(); 而(ⅰ大于0&放大器;&放大器; text.charAt(I - 1)==''){
一世 - ;
} 如果(ⅰ大于0&放大器;&放大器; text.charAt(I - 1)==''){
返回文本;
}其他{
如果(文本的instanceof跨区){
SpannableString SP =新SpannableString(文字+);
TextUtils.copySpansFrom((跨区)文字,0,text.length()
Object.class,SP,0);
返回SP;
}其他{
返回文字+;
}
}
}
我有我自己的解决方案。我创建它扩展自定义视图 MultiAutoCompleteTextView
并重写 performFiltering
在里面。检查第一个字符是@,那么后过滤下一字符。否则,用*代替字符以避免过滤。这里是我的code。
@覆盖
保护无效performFiltering(CharSequence的文字,诠释开始,诠释年底,INT键code){
如果(text.charAt(开始)=='@'){
开始=开始+ 1;
}其他{
文字= text.subSequence(0开始);
的for(int i =启动; I< END;我++){
文本=文本+*;
}
}
super.performFiltering(文字,开始,结束,重点code);
}
I have a MultiAutoCompleteTextView
. It works fine. But I want to show suggestion dropdown only when user type @ on it (like tagging user in facebook app). I have no idea how to do it. Here is my code :
mChatbox = (MultiAutoCompleteTextView) findViewById(R.id.chatbox);
ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,android.R.layout.simple_dropdown_item_1line, userList);
mChatBox.setAdapter(adapter);
mChatBox.setTokenizer(new SpaceTokenizer());
public class SpaceTokenizer implements MultiAutoCompleteTextView.Tokenizer {
public int findTokenStart(CharSequence text, int cursor) {
int i = cursor;
while (i > 0 && text.charAt(i - 1) != ' ') {
i--;
}
while (i < cursor && text.charAt(i) == ' ') {
i++;
}
return i;
}
public int findTokenEnd(CharSequence text, int cursor) {
int i = cursor;
int len = text.length();
while (i < len) {
if (text.charAt(i) == ' ') {
return i;
} else {
i++;
}
}
return len;
}
public CharSequence terminateToken(CharSequence text) {
int i = text.length();
while (i > 0 && text.charAt(i - 1) == ' ') {
i--;
}
if (i > 0 && text.charAt(i - 1) == ' ') {
return text;
} else {
if (text instanceof Spanned) {
SpannableString sp = new SpannableString(text + " ");
TextUtils.copySpansFrom((Spanned) text, 0, text.length(),
Object.class, sp, 0);
return sp;
} else {
return text + " ";
}
}
}
I got a solution by myself. I create custom view which extends MultiAutoCompleteTextView
and override performFiltering
in it. Check if first char is "@", then filter the next chars after it. Otherwise, replace chars with "*" to avoid filtering. Here is my code.
@Override
protected void performFiltering(CharSequence text, int start, int end, int keyCode) {
if (text.charAt(start) == '@') {
start = start + 1;
} else {
text = text.subSequence(0, start);
for (int i = start; i < end; i++) {
text = text + "*";
}
}
super.performFiltering(text, start, end, keyCode);
}
这篇关于如何在android系统上MultiAutoCompleteTextView插入@符号,只有当显示下拉的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!