Android 图片缩放，图片圆角处理

/** * * [图片缩放]<BR> * [功能详细描述] * * @param bitmapOrg * @param dstw * @param dsth * @return */ public static Bitmap resizeImage(Bitmap bitmapOrg, int dstw, int dsth) { Bitmap resizedBitmap; int srcw = bitmapOrg.getWidth(); int srch = bitmapOrg.getHeight(); // 如果长宽小于生成的目标图片，直接返回图片 if (srcw <= dstw && srch <= dsth) { return bitmapOrg; } // else if (srcw > dstw && srch < dsth) // { // // resizedBitmap // // // } float scaleWidth = ((float) dstw) / srcw; float scaleHeight = ((float) dsth) / srch; // create a matrix for the manipulation Matrix matrix = new Matrix(); // resize the Bitmap matrix.postScale(scaleWidth, scaleHeight); // if you want to rotate the Bitmap // matrix.postRotate(45); // recreate the new Bitmap resizedBitmap = Bitmap.createBitmap(bitmapOrg, 0, 0, srcw, srch, matrix, true); bitmapOrg.recycle(); // make a Drawable from Bitmap to allow to set the Bitmap // to the ImageView, ImageButton or what ever return resizedBitmap; } /** * * [ 图像圆角处理]<BR> * [功能详细描述] * * @param bitmap * @param roundPX * @return */ public static Bitmap getRCB(Bitmap bitmap, float roundPX) //RCB means Rounded Corner Bitmap { Bitmap dstbmp = Bitmap.createBitmap(bitmap.getWidth(), bitmap.getHeight(), Config.ARGB_8888); Canvas canvas = new Canvas(dstbmp); final int color = 0xff424242; final Paint paint = new Paint(); final Rect rect = new Rect(0, 0, bitmap.getWidth(), bitmap.getHeight()); final RectF rectF = new RectF(rect); paint.setAntiAlias(true); canvas.drawARGB(0, 0, 0, 0); paint.setColor(color); canvas.drawRoundRect(rectF, roundPX, roundPX, paint); paint.setXfermode(new PorterDuffXfermode(Mode.SRC_IN)); canvas.drawBitmap(bitmap, rect, rect, paint); return dstbmp; }

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