我已经创建了一个SpannableString,第一个字符,并且比其他的最后2小。它看起来是这样的:
I have created a SpannableString, with the first character, and last 2 smaller than the rest. It looks like this:
sBBBBss
我想对准小字符,以便它们与大文本的顶部对齐,而不是底部(因为它们出现在这里)。
I would like to align the smaller characters so they are aligned with the top of the bigger text, instead of the bottom (as they appear here).
这可能吗?
我想我正在寻找这样的事伪code:
I guess I am looking for something like this pseudo-code:
myAmount.setSpan(新的 RelativeAlignSpan(View.TOP)的,0,1,0);
myAmount.setSpan(new RelativeAlignSpan(View.TOP), 0, 1, 0);
我唯一的其他选择是创建一个新的布局,具有多种TextViews,我填充独立的,不管我取悦对齐。我觉得这是一种混乱的,并且将preFER使用SpannableString方法。
My only other alternative is to create a new layout, with multiple TextViews, that I populate independently, and align however I please. I think this is kind of messy, and would prefer to use the SpannableString approach.
于是,我找到了答案,这个问题是张贴在这里,以帮助未来的家伙。
So I found the answer to this question posting it here to help the next guy.
我创建了一个辅助类包含方法来调整跨度,您可以使用此语法调用它(这是设置的最后2个字符出现就行了更高):
I created a helper class to contain the methods to adjust the Span, you can call it using this syntax (this is setting the last 2 characters to appear higher on the line):
SpannableString contentAmount = new SpannableString(amount);
contentAmount.setSpan(new SuperscriptSpanAdjuster(3.0/5.0), contentAmount.length() - 2, contentAmount.length(), SpannableString.SPAN_EXCLUSIVE_EXCLUSIVE);
和辅助类是:
/**
* This is a helper class to help adjust the alignment of a section of text, when using SpannableStrings to set text
* formatting dynamically.
*
*/
import android.text.TextPaint;
import android.text.style.MetricAffectingSpan;
public class SuperscriptSpanAdjuster extends MetricAffectingSpan {
double ratio = 0.5;
public SuperscriptSpanAdjuster() {
}
public SuperscriptSpanAdjuster(double ratio) {
this.ratio = ratio;
}
@Override
public void updateDrawState(TextPaint paint) {
paint.baselineShift += (int) (paint.ascent() * ratio);
}
@Override
public void updateMeasureState(TextPaint paint) {
paint.baselineShift += (int) (paint.ascent() * ratio);
}
}
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