1.渐变色
代码语言：javascript
复制Paint mPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
mPaint.setColor(Color.GREEN);//颜色
mPaint.setStyle(Paint.Style.STROKE);//类型
mPaint.setStrokeWidth(25);//线条宽度
canvas.drawCircle(200,200,100,mPaint);
Shader shader1 = new LinearGradient(100,100,200,200,Color.BLUE,Color.GREEN,Shader.TileMode.REPEAT);
mPaint.setShader(shader1);
canvas.drawCircle(350,200,100,mPaint);
Shader shader2 = new LinearGradient(100,100,200,200,Color.BLUE,Color.GREEN,Shader.TileMode.MIRROR);
mPaint.setShader(shader2);
canvas.drawCircle(500,200,100,mPaint);
Shader shader3 = new LinearGradient(500,100,650,300,Color.RED,Color.GREEN,Shader.TileMode.CLAMP);
mPaint.setShader(shader3);
canvas.drawCircle(650,200,100,mPaint);
Shader shader4 = new RadialGradient(200,500,100,Color.RED,Color.GREEN,Shader.TileMode.MIRROR);
mPaint.setShader(shader4);
mPaint.setStyle(Paint.Style.FILL);//类型
canvas.drawCircle(200,500,100,mPaint);
}
2.截图
代码语言：javascript
复制 Paint mPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
mPaint.setStyle(Paint.Style.FILL);//类型
Bitmap bitmap = BitmapFactory.decodeResource(getResources(), R.mipmap.bbdalao);
Shader shader = new BitmapShader(bitmap,Shader.TileMode.MIRROR,Shader.TileMode.MIRROR);
mPaint.setShader(shader);
canvas.drawCircle(200,500,350,mPaint);
canvas.drawCircle(850,500,350,mPaint);
}
3.模糊
代码语言：javascript
复制 Paint mPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
mPaint.setColor(Color.RED);
setLayerType(View.LAYER_TYPE_SOFTWARE, mPaint);//关闭硬件加速
Bitmap bitmap = BitmapFactory.decodeResource(getResources(), R.mipmap.bbdalao2);
mPaint.setMaskFilter(new BlurMaskFilter(250, BlurMaskFilter.Blur.NORMAL));
canvas.drawBitmap(bitmap,50,50,mPaint);
mPaint.setMaskFilter(new BlurMaskFilter(250, BlurMaskFilter.Blur.INNER));
canvas.drawBitmap(bitmap,50,850,mPaint);
}
