Example usage for android.graphics BitmapRegionDecoder newInstance

Introduction

In this page you can find the example usage for android.graphics BitmapRegionDecoder newInstance.

Prototype

public static BitmapRegionDecoder newInstance(byte[] data, int offset, int length, boolean isShareable)
        throws IOException 

Source Link

Document

Create a BitmapRegionDecoder from the specified byte array.

Usage

From source file:Main.java

public static Bitmap decodeByteArray(byte[] buffer, int reqWidth, int reqHeight) {
    BitmapFactory.Options opts = new BitmapFactory.Options();

    // Determine insample size
    opts.inJustDecodeBounds = true;//from   w  w  w .  j  ava2s .co  m
    BitmapFactory.decodeByteArray(buffer, 0, buffer.length, opts);
    opts.inSampleSize = calculateInSampleSize(opts, reqWidth, reqHeight);

    // Decode the bitmap, regionally if necessary
    Bitmap bitmap = null;
    opts.inJustDecodeBounds = false;
    Rect rect = getCropRectIfNecessary(opts, reqWidth, reqHeight);
    try {
        if (rect != null) {
            BitmapRegionDecoder decoder = BitmapRegionDecoder.newInstance(buffer, 0, buffer.length, false);
            bitmap = decoder.decodeRegion(rect, opts);
        } else {
            bitmap = BitmapFactory.decodeByteArray(buffer, 0, buffer.length, opts);
        }
    } catch (IOException e) {
        Log.e(TAG, "Unable to decode bitmap from stream", e);
    }
    return bitmap;
}

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