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这个时间有点久了啊,不过还是提个小建议,计算中间按键文字位置的代码有点小问题,实际上绘制的效果不在最中间。
drawCircle方法中:
Rect bounds = new Rect();
mPaint.getTextBounds(mText, 0, mText.length(), bounds);
int textwidth = bounds.width();
int textHeight = bounds.height();
canvas.drawText(mText, mCenterPoint.x - textwidth * 0.5f, mCenterPoint.y + textHeight * 0.5f, mPaint);
这一段计算文字绘制位置的方法可以改成:
Paint.FontMetricsInt fm = mPaint.getFontMetricsInt();
canvas.drawText(mText, mCenterPoint.x - mPaint.measureText(mText) * 0.5f, mCenterPoint.y - (fm.bottom + fm.top) * 0.5f, mPaint);
这样绘制的文字就会处于圆心,原理可以参考android drawText()方法中x,y坐标值真正的 意义
A declarative, efficient, and flexible JavaScript library for building user interfaces.
🖖 Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.
TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
An Open Source Machine Learning Framework for Everyone
The Web framework for perfectionists with deadlines.
A PHP framework for web artisans
Bring data to life with SVG, Canvas and HTML. 📊📈🎉
JavaScript (JS) is a lightweight interpreted programming language with first-class functions.
Some thing interesting about web. New door for the world.
A server is a program made to process requests and deliver data to clients.
Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.
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