Android原生绘图工具Paint详细

The Paint class holds the style and color information about how to draw geometries, text and bitmaps.

The Canvas class holds the "draw" calls. To draw something, you need 4 basic components: A Bitmap to hold the pixels, a Canvas to host the draw calls (writing into the bitmap), a drawing primitive (e.g. Rect, Path, text, Bitmap), and a paint (to describe the colors and styles for the drawing).

Paint() 
Paint(int flag)
Paint(Paint paint)

Paint.Style.FILL
Paint.Style.FILL_AND_STROKE
Paint.Style.STROKE

mTextPaint.setTextAlign(Paint.Align.LEFT);
canvas.drawText("MatumbaMan的博客",200, 200, mTextPaint);

mTextPaint.setTextAlign(Paint.Align.RIGHT);
canvas.drawText("MatumbaMan的博客",200, 300, mTextPaint);

mTextPaint.setTextAlign(Paint.Align.CENTER);
canvas.drawText("MatumbaMan的博客",200, 400, mTextPaint);

mTextPaint.setTextAlign(Paint.Align.LEFT);
mTextPaint.setShadowLayer(10, -20, 40, Color.GRAY);
canvas.drawText("MatumbaMan的博客",200, 200, mTextPaint);


mTextPaint.setTextAlign(Paint.Align.RIGHT);
canvas.drawText("MatumbaMan的博客",200, 300, mTextPaint);

mTextPaint.setTextAlign(Paint.Align.CENTER);
canvas.drawText("MatumbaMan的博客",200, 400, mTextPaint);

Path path = new Path();
path.moveTo(100, 100);
path.lineTo(100, 200);
path.lineTo(200, 300);
canvas.drawPath(path, mPaint2);//无

path.reset();
path.moveTo(300, 100);
path.lineTo(300, 200);
path.lineTo(400, 300);
mPaint2.setStrokeCap(Paint.Cap.ROUND);//圆
canvas.drawPath(path, mPaint2);

path.reset();
path.moveTo(500, 100);
path.lineTo(500, 200);
path.lineTo(600, 300);
mPaint2.setStrokeCap(Paint.Cap.SQUARE);//方
canvas.drawPath(path, mPaint2);

Path path = new Path();
path.moveTo(100, 100);
path.lineTo(100, 200);
path.lineTo(200, 300);
mPaint2.setStrokeJoin(Paint.Join.MITER);
canvas.drawPath(path, mPaint2);

path.reset();
path.moveTo(300, 100);
path.lineTo(300, 200);
path.lineTo(400, 300);
mPaint2.setStrokeJoin(Paint.Join.ROUND);
canvas.drawPath(path, mPaint2);

path.reset();
path.moveTo(500, 100);
path.lineTo(500, 200);
path.lineTo(600, 300);
mPaint2.setStrokeJoin(Paint.Join.BEVEL);
canvas.drawPath(path, mPaint2);