get Scaled Picture - Android android.graphics

Android examples for android.graphics:Picture

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  2. Android
  3. android.graphics
  4. Picture

Description

get Scaled Picture

Demo Code

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;

import android.graphics.Bitmap;
import android.graphics.Bitmap.CompressFormat;
import android.graphics.BitmapFactory;
import android.util.Log;

public class Main {

  private static final String TAG = "CameraUtil";

  public static String getScaledPicture(String picturePath, int targetDim) {
    BitmapFactory.Options opts = new BitmapFactory.Options();
    opts.inJustDecodeBounds = true;//from  www . j  a  v a2 s.  co  m

    BitmapFactory.decodeFile(picturePath, opts);
    int photoW = opts.outWidth;
    int photoH = opts.outHeight;

    int scaleFactor = Math.max(photoW / targetDim, photoH / targetDim);

    opts.inJustDecodeBounds = false;
    opts.inSampleSize = scaleFactor;
    opts.inPurgeable = true;

    Bitmap bitmap = BitmapFactory.decodeFile(picturePath, opts);
    Log.v(TAG, "scaled image size: " + bitmap.getWidth() + ", " + bitmap.getHeight());
    return saveImage(bitmap);
  }

  public static String saveImage(Bitmap bmp) {
    try {
      File fo = new File("a.jpg");
      FileOutputStream fos = new FileOutputStream(fo);
      try {
        bmp.compress(CompressFormat.JPEG, 90, fos);
        return fo.getAbsolutePath();
      } finally {
        fos.close();
      }
    } catch (IOException e) {
      e.printStackTrace();
    }
    return null;
  }

}

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