我想做的事?(蓝色将变为白色)
我做了什么?
我找到了一个扩展 TextView 的类,它能够勾勒出非常接近我想要的文本视图。问题是我无法将描边颜色更改为任何颜色,它总是绘制为黑色。如何将边框颜色设置为白色?
我的输出是什么:
我的代码在哪里?
public class TypeFaceTextView extends TextView {
private static Paint getWhiteBorderPaint(){
Paint p = new Paint(Color.WHITE);
return p;
}
private static final Paint BLACK_BORDER_PAINT = getWhiteBorderPaint();
static {
BLACK_BORDER_PAINT.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.DST_OUT));
}
@Override
public void setText(CharSequence text, BufferType type) {
super.setText(String.format(text.toString()), type);
}
private static final int BORDER_WIDTH = 1;
private Typeface typeface;
public TypeFaceTextView(Context context) {
super(context);
}
public TypeFaceTextView(Context context, AttributeSet attrs) {
super(context, attrs);
setDrawingCacheEnabled(false);
setTypeface(attrs);
}
private void setTypeface(AttributeSet attrs) {
final String typefaceFileName = attrs.getAttributeValue(null, "typeface");
if (typefaceFileName != null) {
typeface = Typeface.createFromAsset(getContext().getAssets(), typefaceFileName);
}
setTypeface(typeface);
}
public TypeFaceTextView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
setTypeface(attrs);
}
@Override
public void draw(Canvas aCanvas) {
aCanvas.saveLayer(null, BLACK_BORDER_PAINT, Canvas.HAS_ALPHA_LAYER_SAVE_FLAG
| Canvas.FULL_COLOR_LAYER_SAVE_FLAG | Canvas.MATRIX_SAVE_FLAG);
drawBackground(aCanvas, -BORDER_WIDTH, -BORDER_WIDTH);
drawBackground(aCanvas, BORDER_WIDTH + BORDER_WIDTH, 0);
drawBackground(aCanvas, 0, BORDER_WIDTH + BORDER_WIDTH);
drawBackground(aCanvas, -BORDER_WIDTH - BORDER_WIDTH, 0);
aCanvas.restore();
super.draw(aCanvas);
}
private void drawBackground(Canvas aCanvas, int aDX, int aDY) {
aCanvas.translate(aDX, aDY);
super.draw(aCanvas);
}
}