java - Bitmap is not on canvas after drawing -


i drawing bitmap canvas.drawbitmap(bmp, 0, 0, null); canvas , bitmap not show. ideas?

thank you!

            bitmap bmp = bitmapfactory.decodefile(myfile.getpath());             //bitmap bmp = bitmapfactory.decodestream(bis);              log.i(tag, "builded bitmap");                            log.i(tag, "scaling bitmap...");               //int scale;             //matrix matrix = new matrix();             //matrix.setscale(0.1f, 0.1f);             //if (bmp.getwidth() < bmp.getheight()){             //  scale = canvas.getwidth()/bmp.getwidth();             //}else{             //  scale = canvas.getheight()/bmp.getheight();             //}             //matrix.postscale(scale, scale, bmp.getwidth(), bmp.getheight());             //matrix.postscale(0.5f, canvas.getwidth()/bmp.getwidth());              //bitmap bmp2 = bitmap.createscaledbitmap(bmp, canvas.getwidth(), canvas.getheight(), true);              //paint p = new paint();             //p.setfilterbitmap(true);               //try{             bmp  = bitmap.createscaledbitmap(bmp, canvas.getwidth(), canvas.getheight(), true);             log.i(tag, "scaled");             log.i(tag, "showing bitmap...");             canvas.drawbitmap(bmp, 0, 0, null);             log.i(tag, "showed bitmap");

can draw line? either call invalidate() or postinvalidate().

read drawing here: http://developer.android.com/reference/android/view/view.html

and copy examples like: http://developer.android.com/resources/samples/apidemos/src/com/example/android/apis/graphics/touchpaint.html


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