Here是您可以在SpannableString上应用的不同 Span .
public void setSpan(){
Spannable spantext = new SpannableString("My application");
spantext.setSpan(new StyleSpan(Typeface.BOLD), 3//Start of span, 6//End of span, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
Typeface HelveticaNeueBoldItalic = Typeface.createFromAsset(getActivity().getAssets(), "fonts/HelveticaNeueBoldItalic.ttf");
spantext.setSpan(new CustomTypefaceSpan("", HelveticaNeueBoldItalic ), 0, text.lenght(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
TextView text;
text.setText(spantext);
}
public class CustomTypefaceSpan extends TypefaceSpan {
private final Typeface newType;
public CustomTypefaceSpan(String family, Typeface type) {
super(family);
newType = type;
}
@Override
public void updateDrawState(TextPaint ds) {
applyCustomTypeFace(ds, newType);
}
@Override
public void updateMeasureState(TextPaint paint) {
applyCustomTypeFace(paint, newType);
}
private static void applyCustomTypeFace(Paint paint, Typeface tf) {
int oldStyle;
Typeface old = paint.getTypeface();
if (old == null) {
oldStyle = 0;
} else {
oldStyle = old.getStyle();
}
int fake = oldStyle & ~tf.getStyle();
if ((fake & Typeface.BOLD) != 0) {
paint.setFakeBoldText(true);
}
if ((fake & Typeface.ITALIC) != 0) {
paint.setTextSkewX(-0.25f);
}
paint.setTypeface(tf);
}
}
本文详细介绍了如何在Android应用中使用SpannableString实现文字的个性化设置,如加粗、斜体,并利用CustomTypefaceSpan自定义字体,以提升UI效果。
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