目前,我希望在文本之间添加一个图像,并将其对齐到TextView的顶部.
像这样的东西:
我能找到的唯一垂直对齐是基线(似乎将它放在文本的中心)并对齐底部.
如果我使用ALIGN_BASELINE会发生什么:
有没有办法将它与顶部对齐?
我目前的代码:
txtView.setText(this.addImageAsterisk( "The string to have asterisk at the end*"), BufferType.SPANNABLE);
然后
private CharSequence addImageAsterisk(String string) { Drawable d = context.getResources().getDrawable(R.drawable.img_asterisk); ImageSpan imageSpan = new ImageSpan(d, ImageSpan.ALIGN_BASELINE); final SpannableString spannableString = new SpannableString(string); spannableString.setSpan(imageSpan, string.length()-1, string.length(), 0); return spannableString; }
删除ImageSpan.ALIGN_BASELINE将其设置为与底部对齐,这也不是我预期的结果.
---感谢用户Lalit Poptani,我尝试应用你的答案----应用之后,会发生的事情是整个textview似乎有额外的余量.
在应用范围之前:
This is the text*
在应用SuperscriptSpanAdjuster之后
(some extra space) This is the text*
我的代码:
String string = "This is the text*"; Drawable d = this.context.getResources().getDrawable(R.drawable.img_asterisk); d.setBounds(0, 0, d.getIntrinsicWidth(), d.getIntrinsicHeight()); ImageSpan imageSpan = new ImageSpan(d, ImageSpan.ALIGN_BASELINE); SuperscriptSpanAdjuster s = new SuperscriptSpanAdjuster(1.5); final SpannableString spannableString = new SpannableString(string); spannableString.setSpan(s, string.length() - 1, string.length(), 0); spannableString.setSpan(imageSpan, string.length(), string.length() + 1, 0); textView.setText(spannableString);
Lalit Poptan.. 7
您可以做的是使用自定义MetricAffectingSpan
维持其比例,如,
public class SuperscriptSpanAdjuster extends MetricAffectingSpan { double ratio = 0.5; 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); } }
您可以使用SpannableString
星号应用于您的字符串,如,
SpannableString mString = new SpannableString("This is what I wanted*"); mString.setSpan(new SuperscriptSpanAdjuster(0.5), mString.length() - 1, mString.length(), SpannableString.SPAN_EXCLUSIVE_EXCLUSIVE); mTextView.append("\n"); mTextView.append(mString);
这会根据您的需要在文本中添加星号.你的输出将是,
您可以做的是使用自定义MetricAffectingSpan
维持其比例,如,
public class SuperscriptSpanAdjuster extends MetricAffectingSpan { double ratio = 0.5; 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); } }
您可以使用SpannableString
星号应用于您的字符串,如,
SpannableString mString = new SpannableString("This is what I wanted*"); mString.setSpan(new SuperscriptSpanAdjuster(0.5), mString.length() - 1, mString.length(), SpannableString.SPAN_EXCLUSIVE_EXCLUSIVE); mTextView.append("\n"); mTextView.append(mString);
这会根据您的需要在文本中添加星号.你的输出将是,