Android Bitmap save without transparent area

Question

I want to save bitmap without transparent area.

Bitmap has large transparent pixel.

So i want to remove that

How can i do this?

I cant add pictur

Answer 1

Crop transparent border with this github.

public static Bitmap crop(Bitmap bitmap) {

    int height = bitmap.getHeight();
    int width = bitmap.getWidth();
    int[] empty = new int[width];
    int[] buffer = new int[width];
    Arrays.fill(empty, 0);
    int top = 0;
    int left = 0;
    int bottom = height;
    int right = width;

    for (int y = 0; y < height; y++) {
        bitmap.getPixels(buffer, 0, width, 0, y, width, 1);
        if (!Arrays.equals(empty, buffer)) {
            top = y;
            break;
        }
    }

    for (int y = height - 1; y > top; y--) {
        bitmap.getPixels(buffer, 0, width, 0, y, width, 1);
        if (!Arrays.equals(empty, buffer)) {
            bottom = y;
            break;
        }
    }

    empty = new int[height];
    buffer = new int[height];
    Arrays.fill(empty, 0);

    for (int x = 0; x < width; x++) {
        bitmap.getPixels(buffer, 0, 1, x, 0, 1, height);
        if (!Arrays.equals(empty, buffer)) {
            left = x;
            break;
        }
    }

    for (int x = width - 1; x > left; x--) {
        bitmap.getPixels(buffer, 0, 1, x, 0, 1, height);
        if (!Arrays.equals(empty, buffer)) {
            right = x;
            break;
        }
    }

    return Bitmap.createBitmap(bitmap, left, top, right - left + 1, bottom - top + 1);
}