与Android上透明漆绘图 [英] Drawing with Transparent Paint on Android

问题描述

当我使用油漆与 Col​​or.TRANSPARENT Android中一个普通的2D画布上，我不明白任何结果，我的目的是要摆脱一些的画布上的内容。我的意思是我想处理掉不消失的内容。

这是在code我的油漆：

  mPointFillPaint =新的油漆（）;
mPointFillPaint.setColor（Color.TRANSPARENT）;
mPointFillPaint.setAntiAlias​​（真正的）;
mPointFillPaint.setStyle（Paint.Style.FILL）;
mPointFillPaint.setStrokeJoin（Paint.Join.MITER）;
 

解决方案

普莱斯尝试T选用下面的画图。我可以帮助！

  mPaint =新的油漆（Paint.ANTI_ALIAS_FLAG）;
    mPaint.setColor（Color.TRANSPARENT）;
    mPaint.setXfermode（新PorterDuffXfermode（PorterDuff.Mode.SRC_OUT））;
    mPaint.setAntiAlias​​（真正的）;
 

When I use Paint with Color.TRANSPARENT on a normal 2D canvas in Android, I don't get any results and my intention was to get rid of some of the contents on the canvas. I mean the contents that I want to dispose of don't disappear.

This is the code for my Paint:

mPointFillPaint = new Paint();
mPointFillPaint.setColor(Color.TRANSPARENT);
mPointFillPaint.setAntiAlias(true);
mPointFillPaint.setStyle(Paint.Style.FILL);
mPointFillPaint.setStrokeJoin(Paint.Join.MITER); 

解决方案

Pleas try t use the following Paint. I may Help.!

mPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
    mPaint.setColor(Color.TRANSPARENT);
    mPaint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_OUT));
    mPaint.setAntiAlias(true);

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