Main.java Source code

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Here is the source code for Main.java

Source

//package com.java2s;
import android.annotation.TargetApi;
import android.graphics.Bitmap;
import android.os.Build;

public class Main {
    /**
     * Returns the in memory size of the given {@link Bitmap} in bytes.
     */
    @TargetApi(Build.VERSION_CODES.KITKAT)
    public static int getBitmapByteSize(Bitmap bitmap) {
        // The return value of getAllocationByteCount silently changes for recycled bitmaps from the
        // internal buffer size to row bytes * height. To avoid random inconsistencies in caches, we
        // instead assert here.
        if (bitmap.isRecycled()) {
            throw new IllegalStateException("Cannot obtain size for recycled Bitmap: " + bitmap + "["
                    + bitmap.getWidth() + "x" + bitmap.getHeight() + "] " + bitmap.getConfig());
        }
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
            // Workaround for KitKat initial release NPE in Bitmap, fixed in MR1. See issue #148.
            try {
                return bitmap.getAllocationByteCount();
            } catch (NullPointerException e) {
                // Do nothing.
            }
        }
        return bitmap.getHeight() * bitmap.getRowBytes();
    }

    /**
     * Returns the in memory size of {@link android.graphics.Bitmap} with the given width, height, and
     * {@link android.graphics.Bitmap.Config}.
     */
    public static int getBitmapByteSize(int width, int height, Bitmap.Config config) {
        return width * height * getBytesPerPixel(config);
    }

    private static int getBytesPerPixel(Bitmap.Config config) {
        // A bitmap by decoding a gif has null "config" in certain environments.
        if (config == null) {
            config = Bitmap.Config.ARGB_8888;
        }

        int bytesPerPixel;
        switch (config) {
        case ALPHA_8:
            bytesPerPixel = 1;
            break;
        case RGB_565:
        case ARGB_4444:
            bytesPerPixel = 2;
            break;
        case ARGB_8888:
        default:
            bytesPerPixel = 4;
            break;
        }
        return bytesPerPixel;
    }
}