如何在android中使用两种不同大小的画布
我正在创建两个不同的画布,如何在android中使用两种不同大小的画布,android,image,bitmap,android-canvas,Android,Image,Bitmap,Android Canvas,我正在创建两个不同的画布,pcanvas1和pcanvas2。画布大小不同 bitmap = Bitmap.createBitmap(100, 100 , Config.ARGB_8888); pcanvas1 = new Canvas(); pcanvas1.setBitmap(bitmap); bitmap1 = Bitmap.createBitmap(200, 200 , Config.ARGB_8888); pcanvas2 = new Canvas(); pcanvas2.set
pcanvas1
和pcanvas2
。画布大小不同
bitmap = Bitmap.createBitmap(100, 100 , Config.ARGB_8888);
pcanvas1 = new Canvas();
pcanvas1.setBitmap(bitmap);
bitmap1 = Bitmap.createBitmap(200, 200 , Config.ARGB_8888);
pcanvas2 = new Canvas();
pcanvas2.setBitmap(bitmap1);
我在两个画布中使用相同的位图,但大小不同
bitmap = Bitmap.createBitmap(100, 100 , Config.ARGB_8888);
pcanvas1 = new Canvas();
pcanvas1.setBitmap(bitmap);
bitmap1 = Bitmap.createBitmap(200, 200 , Config.ARGB_8888);
pcanvas2 = new Canvas();
pcanvas2.setBitmap(bitmap1);
我需要在两个位图的同一点上画圆
如何做到这一点?如果画布大小不同。比例:
bitmap = Bitmap.createBitmap(100, 100 , Config.ARGB_8888);
pcanvas1 = new Canvas();
pcanvas1.setBitmap(bitmap);
bitmap1 = Bitmap.createBitmap(200, 200 , Config.ARGB_8888);
pcanvas2 = new Canvas();
pcanvas2.setBitmap(bitmap1);
scale_x = bitmap2.width/bitmap1.width;
scale_y = bitmap2.height/bitmap1.height;
canvas1.drawLine(startX1, startY1, stopX1, stopY1, paint);
canvas2.drawLine(startX1*scale_x, startY*scale_y, stopX*scale_x, stopY*scale_y, paint);
类似于上述内容。您对解决方案有反馈吗?很抱歉,我没有尝试,我会尝试让您知道。