android - Question about rotate bitmap with Canvas.rotate -

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as know, can rotate bitmap through 2 ways.

the 1st way is:

matrix mt = new matrix();  mt.postrotate(degree);  bitmap bitmap = createbitmap(src, 0, 0, w, h, mt, true);  canvs.drawbitmap(bitmap, 0, 0, paint);

in way, need create new bitmap every rotation, not way high performance game or app.

the 2nd way is:

canvas.save();  canvas.rotate(degree);  canvas.drawbitmap(bitmap, 0, 0, paint);  canvas.restore();

in way, avoid creating new bitmap frequently, rotation bitmap distortion, bitmap quality worse first way.

so, there 3rd way rotate bitmap high performance , quality?

your comments appreciated!

make sure providing paint canvas.drawbitmap(bitmap, 0, 0, paint).

and don't forget use anti-alias , bitmap filtering:

paint = new paint(paint.anti_alias_flag | paint.filter_bitmap_flag);

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