Android Utililty Methods Bitmap Resize

List of utility methods to do Bitmap Resize

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Description

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

Method

intcalculateInSampleSize(BitmapFactory.Options options, int reqWidth, int reqHeight)
calculate In Sample Size 
final int height = options.outHeight;
final int width = options.outWidth;
int inSampleSize = 1;
if (height > reqHeight || width > reqWidth) {
    if (width > height)
        inSampleSize = Math.round((float) height
                / (float) reqHeight);
    else
...
intcalculateInSampleSize(BitmapFactory.Options options, int reqWidth, int reqHeight)
calculate In Sample Size 
final int height = options.outHeight;
final int width = options.outWidth;
int inSampleSize = 1;
if (height > reqHeight || width > reqWidth) {
    final int heightRatio = Math.round((float) height
            / (float) reqHeight);
    final int widthRatio = Math.round((float) width
            / (float) reqWidth);
...
BitmapcreateFitCenterBitmap(Bitmap srcBitmap, int dstWidth, int dstHeight, boolean tryRecycleSource)
create Fit Center Bitmap 
if (srcBitmap == null || dstWidth <= 0 || dstHeight <= 0) {
    return srcBitmap;
int srcWidth = srcBitmap.getWidth();
int srcHeight = srcBitmap.getHeight();
int newWidth = srcWidth;
int newHeight = srcHeight;
if (newWidth > dstWidth) {
...
BitmapcreateFitXYBitmap(Bitmap srcBitmap, int dstWidth, int dstHeight, boolean tryRecycleSource)
create Fit XY Bitmap 
if (srcBitmap == null || dstWidth <= 0 || dstHeight <= 0) {
    return srcBitmap;
Bitmap dstBitmap = srcBitmap;
try {
    dstBitmap = Bitmap.createScaledBitmap(srcBitmap, dstWidth,
            dstHeight, true);
    if (dstBitmap != srcBitmap && tryRecycleSource) {
...
BitmapgetSampledBitmap(String filePath, int reqWidth, int reqHeight)
get Sampled Bitmap 
Options options = new Options();
options.inJustDecodeBounds = true;
BitmapFactory.decodeFile(filePath, options);
final int height = options.outHeight;
final int width = options.outWidth;
int inSampleSize = 1;
if (height > reqHeight || width > reqWidth) {
    if (width > height) {
...
BitmapmanageBitmapRotatio(int photoW, int photoH, Bitmap bitMap, int rotation)
manage Bitmap Rotatio 
Bitmap rotateBitmap = bitMap;
switch (rotation) {
case ExifInterface.ORIENTATION_UNDEFINED:
    break;
case ExifInterface.ORIENTATION_NORMAL:
    break;
case ExifInterface.ORIENTATION_FLIP_HORIZONTAL:
    break;
...
BitmapreadBitmapAutoSize(String filePath, int outWidth, int outHeight)
read Bitmap Auto Size 
FileInputStream fs = null;
BufferedInputStream bs = null;
try {
    fs = new FileInputStream(filePath);
    bs = new BufferedInputStream(fs);
    BitmapFactory.Options options = setBitmapOption(filePath,
            outWidth, outHeight);
    return BitmapFactory.decodeStream(bs, null, options);
...
Bitmapresize(Bitmap bitmap, int newWidth, int newHeight)
Resize. 
Bitmap resizedBitmap = Bitmap.createBitmap(bitmap, 0, 0, newWidth,
        newHeight);
return resizedBitmap;
BitmapresizeAndCropCenter(Bitmap bitmap, int size, boolean recycle)
resize And Crop Center 
int w = bitmap.getWidth();
int h = bitmap.getHeight();
if (w == size && h == size)
    return bitmap;
float scale = (float) size / Math.min(w, h);
Bitmap target = Bitmap.createBitmap(size, size, getConfig(bitmap));
int width = Math.round(scale * bitmap.getWidth());
int height = Math.round(scale * bitmap.getHeight());
...
BitmapresizeAndCropCenter(final Bitmap bitmap, final int size)
This is only used when the launcher shortcut is created. 
final int w = bitmap.getWidth();
final int h = bitmap.getHeight();
if (w == size && h == size) {
    return bitmap;
final float mScale = (float) size / Math.min(w, h);
final Bitmap mTarget = Bitmap.createBitmap(size, size,
        Bitmap.Config.ARGB_8888);
...