Android Canvas.drawText [英] Android Canvas.drawText

问题描述

我有一个视图，我在 onDraw(Canvas canvas) 方法中使用 Canvas 对象进行绘图.我的代码是:

I have a view, I'm drawing with the Canvas object in the onDraw(Canvas canvas) method. My code is:

Paint paint = new Paint();
paint.setColor(Color.WHITE);
paint.setStyle(Style.FILL);
canvas.drawPaint(paint);

paint.setColor(android.R.color.black);
paint.setTextSize(20);
canvas.drawText("Some Text", 10, 25, paint);

问题是文本没有通过背景显示，我做错了什么?如果我删除 canvas.drawPaint(paint) 和 paint.setColor(android.R.color.black) 你可以在屏幕上看到文本.....

The problem is the text doesn't show through the background, what am I doing wrong? If I remove the canvas.drawPaint(paint) and paint.setColor(android.R.color.black) you can see the text on the screen.....

推荐答案

解决了这个问题，结果是 android.R.color.black 与 Color.BLACK 不同.将代码更改为:

Worked this out, turns out that android.R.color.black is not the same as Color.BLACK. Changed the code to:

Paint paint = new Paint(); 
paint.setColor(Color.WHITE); 
paint.setStyle(Style.FILL); 
canvas.drawPaint(paint); 

paint.setColor(Color.BLACK); 
paint.setTextSize(20); 
canvas.drawText("Some Text", 10, 25, paint); 

现在一切正常！！

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