我需要从Photoshop的布局中设计。布局上有一些字体。设计师给了我这些字体。但是在Photoshop的布局中,他使用了字母之间的间距。我如何在Android的textView中实现这一点?我找到了一个解决方案:
但是如果我创建myTextView extends TextView
,它会出现错误。如果我适应一个设备,在具有更大显示屏的设备上,字母之间的间距增加不成比例。
编辑
public class MyTextView extends TextView {
private float letterSpacing = 0.0f;
private CharSequence originalText = "";
private Typeface typeface;
public MyTextView(Context context) {
this(context, null);
isInEditMode();
}
public MyTextView(Context context, AttributeSet attrs) {
this(context, attrs, 0);
isInEditMode();
}
public MyTextView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
TypedArray attributesArray = getResources().obtainAttributes(attrs, R.styleable.MyTextView);
letterSpacing = attributesArray.getDimension(R.styleable.MyTextView_letterSpacing, 0.0f);
String fontName = attributesArray.getString(R.styleable.MyTextView_fontName);
if(!this.isInEditMode()) {
if (null == fontName) {
typeface = Fonts.getBlockBertholdRegular(context);
} else {
typeface = Fonts.get(context, fontName);
}
super.setTypeface(typeface);
}
originalText = super.getText();
applyLetterSpacing();
this.invalidate();
}
public float getLetterSpacing() {
return letterSpacing;
}
public void setLetterSpacing(float letterSpacing) {
this.letterSpacing = letterSpacing;
applyLetterSpacing();
}
@Override
public void setText(CharSequence text, BufferType type) {
originalText = text;
applyLetterSpacing();
}
@Override
public CharSequence getText() {
return originalText;
}
private void applyLetterSpacing() {
if (this == null || this.originalText == null) return;
StringBuilder builder = new StringBuilder();
for (int i = 0; i < originalText.length(); i++) {
String c = "" + originalText.charAt(i);
builder.append(c.toUpperCase());
if (i + 1 < originalText.length()) {
builder.append("\u00A0");
}
}
SpannableString finalText = new SpannableString(builder.toString());
if (builder.toString().length() > 1) {
for (int i = 1; i < builder.toString().length(); i += 2) {
finalText.setSpan(new ScaleXSpan((letterSpacing + 1) / 10), i, i + 1, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
}
}
super.setText(finalText, BufferType.SPANNABLE);
if(!this.isInEditMode()) {
super.setTypeface(typeface);
}
}
}
textView
吗?(myTextView extends TextView
) 如果是这样,有什么问题出现了吗? - Docteur