Android Utililty Methods Bitmap Decode

List of utility methods to do Bitmap Decode

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Description

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

Method

BitmapdecodeBitmap(String path, int displayWidth, int displayHeight)
get a bitamp can center inside the rect of displayWidth * displayHeight 
BitmapFactory.Options op = new BitmapFactory.Options();
op.inJustDecodeBounds = true;
Bitmap bmp = BitmapFactory.decodeFile(path, op);
int wRatio = (int) Math.ceil(op.outWidth / (float) displayWidth);
int hRatio = (int) Math.ceil(op.outHeight / (float) displayHeight);
if (wRatio > 1 && hRatio > 1) {
    if (wRatio > hRatio) {
        op.inSampleSize = wRatio;
...
BitmapdecodeBitmap(String path, int maxImageSize)
decode Bitmap 
BitmapFactory.Options op = new BitmapFactory.Options();
op.inJustDecodeBounds = true;
Bitmap bmp = BitmapFactory.decodeFile(path, op);
int scale = 1;
if (op.outWidth > maxImageSize || op.outHeight > maxImageSize) {
    scale = (int) Math.pow(
            2,
            (int) Math.round(Math.log(maxImageSize
...
BitmapdecodeSampledBitmapFromFile(String filename, int reqWidth, int reqHeight)
decode Sampled Bitmap From File 
final BitmapFactory.Options options = new BitmapFactory.Options();
options.inJustDecodeBounds = true;
BitmapFactory.decodeFile(filename, options);
options.inSampleSize = calculateInSampleSize(options, reqWidth,
        reqHeight);
options.inJustDecodeBounds = false;
return BitmapFactory.decodeFile(filename, options);
BitmapdecodeSampledBitmap(Uri uri, int reqWidth, int reqHeight, Activity act)
decode Sampled Bitmap 
InputStream is;
try {
    is = act.getApplicationContext().getContentResolver()
            .openInputStream(uri);
    final BitmapFactory.Options options = new BitmapFactory.Options();
    options.inJustDecodeBounds = true;
    BitmapFactory.decodeStream(is, null, options);
    is.close(); 
...
BitmapdecodeBitmapFromAssets(Context context, String fileName)
decode Bitmap From Assets 
InputStream is = null;
try {
    is = context.getAssets().open(fileName);
    return BitmapFactory.decodeStream(is);
} catch (Exception e) {
    return null;
} finally {
    if (is != null) {
...
BitmapdecodeImageFile(String strImagePath, BitmapFactory.Options options, boolean checkOrientation)
decode Image File 
if (checkOrientation == false) {
    return BitmapFactory.decodeFile(strImagePath, options);
} else {
    Bitmap bm = BitmapFactory.decodeFile(strImagePath, options);
    int degree = getExifDegree(strImagePath);
    return getRotatedBitmap(bm, degree);
BitmapdecodeSampledBitmapFromByte(byte[] res, int reqWidth, int reqHeight)
decode Sampled Bitmap From Byte 
final BitmapFactory.Options options = new BitmapFactory.Options();
options.inJustDecodeBounds = true;
try {
    BitmapFactory.decodeByteArray(res, 0, res.length, options);
} catch (OutOfMemoryError e) {
    return null;
options.inSampleSize = calculateInSampleSize(options, reqWidth,
...
BitmapdecodeSampledBitmapFromFile(String file, int reqWidth, int reqHeight)
decode Sampled Bitmap From File 
final BitmapFactory.Options options = new BitmapFactory.Options();
options.inJustDecodeBounds = true;
BitmapFactory.decodeFile(file, options);
options.inSampleSize = calculateInSampleSize(options, reqWidth,
        reqHeight);
options.inJustDecodeBounds = false;
return BitmapFactory.decodeFile(file, options);
BitmapdecodeSampledBitmapFromResource(Resources res, int resId, int reqWidth, int reqHeight)
decode Sampled Bitmap From Resource 
final BitmapFactory.Options options = new BitmapFactory.Options();
options.inJustDecodeBounds = true;
BitmapFactory.decodeResource(res, resId, options);
options.inSampleSize = calculateInSampleSize(options, reqWidth,
        reqHeight);
options.inJustDecodeBounds = false;
return BitmapFactory.decodeResource(res, resId, options);