如何突出显示用户在 EditText 中选择的特定单词。例如,我有一个 EditText,用户在其中输入句子“你好,你好吗?”,现在用户可以选择像这张图片这样的词。而且我必须在 TextView 的整个句子中突出显示选定的单词。
问问题
1682 次
4 回答
1
您可以通过使用 replace() 方法然后 Html.fromHtml() 来做到这一点,如下所示
yourEditText.setOnFocusChangedListener(new OnFocusChangedListener(){
@Override
public void onFocusChange(View v, boolean hasFocus){
if (hasFocus){
if (str.contains("Hello how are you ?") == true)
{
str = ((EditText)v)getText.ToString().replaceAll("Hello how are you ?", "<font color='red'>Hello how are you ?</font>");
((EditText)v).setText(Html.fromHtml(str), TextView.BufferType.SPANNABLE);
}
}
}
});
[编辑 1]
yourEditText.setOnFocusChangedListener(new OnFocusChangedListener(){
@Override
public void onFocusChange(View v, boolean hasFocus){
if (hasFocus){
// But the words in an ArrayList then use them
for(String s : arrLst){
if (str.contains(s) == true) {
str = ((EditText)v)getText.ToString().replaceAll(s, "<font color='red'>Hello how are you ?</font>");
((EditText)v).setText(Html.fromHtml(str), TextView.BufferType.SPANNABLE); }
}
}
}
});
[编辑 2]
yourEditText.setOnFocusChangedListener(new OnFocusChangedListener(){
@Override
public void onFocusChange(View v, boolean hasFocus){
if (hasFocus){
int sSelection = ((EditText)v)getText.ToString().getSelectionStart();
int eSelection = ((EditText)v)getText.ToString().getSelectionEnd();
String sString = string.substring(sSelection, eSelection);
str = ((EditText)v)getText.ToString().replaceAll(sString , "<font color='red'>"+sString +"</font>");
((EditText)v).setText(Html.fromHtml(str), TextView.BufferType.SPANNABLE);
}
}
});
于 2013-03-18T10:11:37.757 回答
1
试试这个可能对你有帮助。
"android:textColorHighlight="#00f000"
于 2013-03-18T10:21:55.253 回答
1
您可以使用 spannable 来实现
看看EditText
有一个 api 来获取选择:EditText 中的选择
TextView
您可以在using中设置多色文本SpannableString
所以将两者结合在这样的代码中:
edit.setOnEditorActionListener(
new EditText.OnEditorActionListener() {
@Override
public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
if (actionId == EditorInfo.IME_ACTION_SEARCH ||
actionId == EditorInfo.IME_ACTION_DONE ||
event.getAction() == KeyEvent.ACTION_DOWN &&
event.getKeyCode() == KeyEvent.KEYCODE_ENTER) {
if (!event.isShiftPressed()) {
// the user is done typing.
//edit is the EditText
Spannable spann = new SpannableString(edit.getText());
spann.setSpan(new ForegroundColorSpan(Color.BLUE), edit.getSelectionStart(), edit.getSelectionEnd(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
textView.setText(spann); // TextView
return true; // consume.
}
}
return false; // pass on to other listeners.
}
});
应该给你想要的效果
结束编辑检测代码来自这里:所以回答
于 2013-03-18T10:34:25.753 回答
0
像这样使用html:
Spanned s = Html.fromHtml(string.replace(selectedString, "<font color=\"red\">" + selectedString + "</font>"));
edittext.text(s);
于 2013-03-18T10:09:49.883 回答