Android的开发:如何更换一个EditText的一部分,一个Spannable [英] Android Development: How To Replace Part of an EditText with a Spannable
问题描述
我想更换为可编辑的一部分Gettext中的(),跨度返回。
I'm trying to replace part of an Editable returned from getText() with a span.
我试过的getText()代替(),但是这仅适用于CharSequences。
I've tried getText().replace() but that's only for CharSequences.
究其原因,我想,而不是去通过,并强调整个的EditText(可与大文件速度慢),要做到这一点,所以我可以突出一个EditText此起彼伏部分(后小的延迟)。
The reason I'm trying to do this is so I can highlight sections of an EditText one after another (after a small delay), instead of going through and highlighting the whole EditText (which can be slow with big files).
有没有人有一个线索我怎么会去这样做?
Does anyone have a clue about how I'd go about doing this?
推荐答案
这个最小尺寸的例子,使单词的第一个'大:
This minimal size example makes the word 'first' large:
public class SpanTest extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
String dispStr = "I'm the first line\nI'm the second line";
TextView tv = (TextView) findViewById(R.id.textView1);
int startSpan = dispStr.indexOf("first");
int endSpan = dispStr.indexOf("line");
Spannable spanRange = new SpannableString(dispStr);
TextAppearanceSpan tas = new TextAppearanceSpan(this, android.R.style.TextAppearance_Large);
spanRange.setSpan(tas, startSpan, endSpan, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
tv.setText(spanRange);
}
}
您可以使其适应您的需求。
You can adapt it to your needs
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