先畫倆矩形

RectF rectF = new RectF(0,0,300,300);

canvas.drawRect(rectF,mPaint);

mPaint.setColor(Color.GREEN);

RectF rectF2 = new RectF(400,400,600,600);

canvas.drawRect(rectF2,mPaint);

把他倆重在一起? 看看

然后 說是 有講究

canvas.clipRect(0, 0, 300, 300);

// canvas.clipRect(200, 200, 500, 500, Region.Op.DIFFERENCE);

RectF rectF = new RectF(0,0,300,300);

canvas.drawRect(rectF,mPaint);

mPaint.setColor(Color.GREEN);

RectF rectF2 = new RectF(200,200,500,500);

canvas.drawRect(rectF2,mPaint);

canvas.clipRect(0, 0, 300, 300);

canvas.clipRect(200, 200, 500, 500, Region.Op.DIFFERENCE);

RectF rectF = new RectF(0,0,300,300);

canvas.drawRect(rectF,mPaint);

mPaint.setColor(Color.GREEN);

RectF rectF2 = new RectF(200,200,500,500);

canvas.drawRect(rectF2,mPaint);

第二個

canvas.clipRect(0, 0, 300, 300);

canvas.clipRect(200, 200, 500, 500, Region.Op.INTERSECT);

RectF rectF = new RectF(0,0,300,300);

canvas.drawRect(rectF,mPaint);

mPaint.setColor(Color.GREEN);

RectF rectF2 = new RectF(200,200,500,500);

canvas.drawRect(rectF2,mPaint);

canvas.clipRect(0, 0, 300, 300, Region.Op.DIFFERENCE);

canvas.clipRect(200, 200, 500, 500);

RectF rectF = new RectF(0, 0, 300, 300);

canvas.drawRect(rectF, mPaint);

mPaint.setColor(Color.GREEN);

RectF rectF2 = new RectF(200, 200, 500, 500);

canvas.drawRect(rectF2, mPaint);

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.P) {

canvas.clipPath(path);

} else {

canvas.clipPath(path, Region.Op.XOR);// REPLACE、UNION 等類型

}

canvas.clipRect(200, 200, 500, 500, Region.Op.INTERSECT);

RectF rectF = new RectF(0, 0, 300, 300);

canvas.drawRect(rectF, mPaint);

canvas.clipRect(0, 0, 300, 300, Region.Op.DIFFERENCE);

mPaint.setColor(Color.GREEN);

RectF rectF2 = new RectF(200, 200, 500, 500);

canvas.drawRect(rectF2, mPaint);

標簽：200,canvas,自定義,Clip,300,RectF,mPaint,Android,500

來源： https://blog.csdn.net/FlyPig_Vip/article/details/100894973

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