Android圖片縮放 指定尺寸

標籤：

//使用Bitmap加Matrix來縮放    public static Drawable resizeImage(Bitmap bitmap, int w, int h)     {          Bitmap BitmapOrg = bitmap;          int width = BitmapOrg.getWidth();          int height = BitmapOrg.getHeight();          int newWidth = w;          int newHeight = h;          float scaleWidth = ((float) newWidth) / width;          float scaleHeight = ((float) newHeight) / height;          Matrix matrix = new Matrix();          matrix.postScale(scaleWidth, scaleHeight);          // if you want to rotate the Bitmap           // matrix.postRotate(45);           Bitmap resizedBitmap = Bitmap.createBitmap(BitmapOrg, 0, 0, width,                          height, matrix, true);          return new BitmapDrawable(resizedBitmap);      }

//使用BitmapFactory.Options的inSampleSize參數來縮放    public static Drawable resizeImage2(String path,int width,int height)     {BitmapFactory.Options options = new BitmapFactory.Options();options.inJustDecodeBounds = true;//不載入bitmap到記憶體中BitmapFactory.decodeFile(path,options); int outWidth = options.outWidth;int outHeight = options.outHeight;options.inDither = false;options.inPreferredConfig = Bitmap.Config.ARGB_8888;options.inSampleSize = 1;if (outWidth != 0 && outHeight != 0 && width != 0 && height != 0) {int sampleSize=(outWidth/width+outHeight/height)/2;Log.d(tag, "sampleSize = " + sampleSize);options.inSampleSize = sampleSize;}options.inJustDecodeBounds = false;return new BitmapDrawable(BitmapFactory.decodeFile(path, options));}

Android圖片縮放 指定尺寸