Android实现绘制发光效果
龙旋
共 2051字,需浏览 5分钟
·
2022-05-22 18:30
先上效果先上效果:
实现方式:
public BlurMaskFilter(float radius, Blur style)
float radius 设置模糊半径
Blur style 设置发光样式,包括
Blur.INNER(内发光),Blur.NORMAL(内外发光)
Blur.SOLID(外发光),Blur.OUTER(仅外发光可见)
贴上代码:
public class MaskFilterView extends View {
private Paint lightPaint;
private int centerX, centerY;
/** 发光范围 */
private int radioRadius = 70;
public MaskFilterView(Context context) {
super(context);
init();
}
public MaskFilterView(Context context, @Nullable AttributeSet attrs) {
super(context, attrs);
init();
}
private void init() {
lightPaint = new Paint();
setLayerType(LAYER_TYPE_SOFTWARE, null);
lightPaint.setColor(Color.parseColor("#EC3E3E"));
lightPaint.setMaskFilter(new BlurMaskFilter(radioRadius, BlurMaskFilter.Blur.INNER));
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
centerX = getLeft() + getMeasuredWidth()/2;
centerY = getTop() + getMeasuredHeight()/2;
super.onMeasure(widthMeasureSpec, widthMeasureSpec);
}
public void setBlurType(int blurType) {
switch (blurType) {
case 0:
lightPaint.setMaskFilter(new BlurMaskFilter(radioRadius, BlurMaskFilter.Blur.INNER));
break;
case 1:
lightPaint.setMaskFilter(new BlurMaskFilter(radioRadius, BlurMaskFilter.Blur.NORMAL));
break;
case 2:
lightPaint.setMaskFilter(new BlurMaskFilter(radioRadius, BlurMaskFilter.Blur.SOLID));
break;
case 3:
lightPaint.setMaskFilter(new BlurMaskFilter(radioRadius, BlurMaskFilter.Blur.OUTER));
break;
}
invalidate();
}
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
canvas.drawCircle(centerX, centerY, 150, lightPaint);
}
}
评论
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