我正在开发像记事本这样的应用程序,我想在其中动态更改选定的文本格式(颜色、更改字体样式、粗体、斜体、下划线等)。如何格式化特定单词?
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2 回答
3
getSelectionStart()
您可以使用and方法获取所选单词getSelectionEnd()
:
EditText etx=(EditText)findViewById(R.id.editext);
int startSelection=etx.getSelectionStart();
int endSelection=etx.getSelectionEnd();
String selectedText = etx.getText().substring(startSelection, endSelection);
然后,您可以在按钮单击/其他事件上将其带到SpannableStringBuilder后,通过在完整字符串中使用此选定子字符串来应用您的特定格式:
格式化文本的代码:
int startSelection=etx.getSelectionStart();
int endSelection=etx.getSelectionEnd();
final SpannableStringBuilder sb = new SpannableStringBuilder(etx.getText().toString());
final StyleSpan bss = new StyleSpan(android.graphics.Typeface.BOLD); // Span to make text bold
final StyleSpan iss = new StyleSpan(android.graphics.Typeface.ITALIC); // Span to make text italic
sb.setSpan(iss, startSelection, endSelection, Spannable.SPAN_INCLUSIVE_INCLUSIVE);
sb.setSpan(bss, startSelection, endSelection, Spannable.SPAN_INCLUSIVE_INCLUSIVE);
etx.setText(sb);
参考。
于 2012-05-18T09:30:16.790 回答
0
EditText et1=(EditText)findViewById(R.id.edit);
int startSelection=et.getSelectionStart();
int endSelection=et.getSelectionEnd();
String selectedText = et1.getText().substring(startSelection, endSelection);
希望此代码适合您的情况
于 2012-05-18T09:30:01.417 回答