Android Utililty Methods Bitmap Scale

List of utility methods to do Bitmap Scale

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Description

The list of methods to do Bitmap Scale are organized into topic(s).

Method

BitmapgetScalBitmap(Context context, Uri uri, int destW, int destH)
get Scal Bitmap 
if (uri == null)
    return null;
InputStream in = null;
try {
    in = context.getContentResolver().openInputStream(uri);
} catch (FileNotFoundException e) {
    e.printStackTrace();
    return null;
...
BitmapgetScalBitmap(String file, int destW, int destH)
get Scal Bitmap 
if (file == null)
    return null;
BitmapFactory.Options options = new BitmapFactory.Options();
options.inJustDecodeBounds = true;
Bitmap bm = BitmapFactory.decodeFile(file, options);
options.inJustDecodeBounds = false;
float blW = (float) options.outWidth / destW;
float blH = (float) options.outHeight / destH;
...
BitmapgetScaledBitmap(Bitmap bitmap, int width, int height)
get Scaled Bitmap 
return bitmap.createScaledBitmap(bitmap, width, height, false);
BitmapgetScaledBitmapByHeight(Bitmap bm, int newHeight)
get Scaled Bitmap By Height 
int width = bm.getWidth();
int height = bm.getHeight();
int newWidth = (width * newHeight) / height;
Bitmap scaledBitmap = Bitmap.createScaledBitmap(bm, newWidth,
        newHeight, false);
bm.recycle();
return scaledBitmap;
BitmapscaleBitmap(Bitmap bitmap, int dstWidth, int dstHeight)
scale Bitmap 
int w = bitmap.getWidth();
int h = bitmap.getHeight();
Matrix matrix = new Matrix();
float scaleWidth = ((float) dstWidth / w);
float scaleHeight = ((float) dstHeight / h);
matrix.postScale(scaleWidth, scaleHeight);
return Bitmap.createBitmap(bitmap, 0, 0, w, h, matrix, true);
BitmapscaleBitmap(Bitmap bitmap, int targetwidth)
scale Bitmap 
int imageWidth = targetwidth;
if (bitmap != null
        && (bitmap.getWidth() < imageWidth || bitmap.getHeight() < imageWidth)) {
    int width = bitmap.getWidth();
    int height = bitmap.getHeight();
    int min = width;
    if (width > height) {
        min = height;
...
byte[]scaleBitmapIfNeededToSize(Bitmap bitmap, long size)
scale Bitmap If Needed To Size 
byte[] data = null;
try {
    float width = bitmap.getWidth();
    float height = bitmap.getHeight();
    data = bmpToByteArray(bitmap, false);
    float des = data.length;
    des = des / size;
    if (des <= 1) {
...
BitmapscaleBitmapKeepRatio(Bitmap bitmap, int dstWidth, int dstHeight)
scale Bitmap Keep Ratio 
int w = bitmap.getWidth();
int h = bitmap.getHeight();
float ratio = ((float) w) / h;
if (dstWidth > dstHeight) {
    dstWidth = (int) (dstHeight * ratio);
} else {
    dstHeight = (int) (dstWidth / ratio);
return scaleBitmap(bitmap, dstWidth, dstHeight);
BitmapscaleToTextSize(Bitmap bmp, float textSize)
scale To Text Size 
int bmpHeight = bmp.getHeight();
if (textSize > 0 && textSize != bmp.getHeight()) {
    float scale = textSize / (float) bmpHeight;
    bmp = Bitmap.createScaledBitmap(bmp,
            (int) (bmp.getWidth() * scale),
            (int) (bmpHeight * scale), true);
return bmp;
...
BitmapscaleToScreen(Activity activity, Bitmap bitmap)
scale To Screen 
DisplayMetrics dm = new DisplayMetrics();
activity.getWindowManager().getDefaultDisplay().getMetrics(dm);
int intScreenWidth = dm.widthPixels;
int intScreenHeight = dm.heightPixels;
return Bitmap.createScaledBitmap(bitmap, intScreenWidth,
        intScreenHeight, true);