load Bitmap Rotated - Android Graphics

Android examples for Graphics:Bitmap Rotate

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Description

load Bitmap Rotated

Demo Code


//package com.java2s;
import java.io.File;
import java.io.IOException;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Matrix;
import android.media.ExifInterface;
import android.util.Log;

public class Main {
    private static final String TAG = "ImageUtil";

    public static Bitmap loadBitmapRotated(String bitmapFilename,
            int inSampleSize) {
        BitmapFactory.Options bitmapOptions = new BitmapFactory.Options();
        bitmapOptions.inSampleSize = inSampleSize;
        Bitmap bitmap = BitmapFactory.decodeFile(bitmapFilename,
                bitmapOptions);/*w w  w. j  av a 2  s  .c  om*/
        if (bitmap == null)
            return null;
        File imageFile = new File(bitmapFilename.toString());
        try {
            ExifInterface exif = new ExifInterface(
                    imageFile.getAbsolutePath());
            int orientation = exif.getAttributeInt(
                    ExifInterface.TAG_ORIENTATION,
                    ExifInterface.ORIENTATION_NORMAL);
            int rotate = 0;
            switch (orientation) {
            case ExifInterface.ORIENTATION_ROTATE_270:
                rotate -= 90;
            case ExifInterface.ORIENTATION_ROTATE_180:
                rotate -= 90;
            case ExifInterface.ORIENTATION_ROTATE_90:
                rotate -= 90;
            }

            Log.i(TAG, "Detected orientation " + orientation);
            if (rotate != 0) {
                Log.i(TAG, "Rotating... " + rotate);
                bitmap = bitmap.copy(Bitmap.Config.ARGB_8888, true);
                Matrix matrix = new Matrix();
                matrix.postRotate(-rotate);
                bitmap = Bitmap
                        .createBitmap(bitmap, 0, 0, bitmap.getWidth(),
                                bitmap.getHeight(), matrix, true);
            }
        } catch (IOException io) {
            Log.i(TAG, "EXIF failed: " + io.toString());
        }
        return bitmap;
    }
}

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