Android 图片放大修改代码

核心提示：bitmap = BitmapFactory.decodeStream(is);is.close();} catch (IOException e) {e.printStackTrace();}Log.v(tag,bitmap.toString());return bitmap;}public static Drawa

bitmap = BitmapFactory.decodeStream(is);

is.close();

} catch (IOException e) {

e.printStackTrace();

}

Log.v(tag,bitmap.toString());

return bitmap;

}

public static Drawable resizeImage(Bitmap bitmap, int w, int h) {

// load the origial Bitmap

Bitmap BitmapOrg = bitmap;

int width = BitmapOrg.getWidth();

int height = BitmapOrg.getHeight();

int newWidth = w;

int newHeight = h;

Log.v(tag,String.valueOf(width));

Log.v(tag,String.valueOf(height));

Log.v(tag,String.valueOf(newWidth));

Log.v(tag,String.valueOf(newHeight));

// calculate the scale

float scaleWidth = ((float) newWidth) / width;

float scaleHeight = ((float) newHeight) / height;

// create a matrix for the manipulation

Matrix matrix = new Matrix();

// resize the Bitmap

matrix.postScale(scaleWidth, scaleHeight);

// if you want to rotate the Bitmap

// matrix.postRotate(45);

// recreate the new Bitmap

Bitmap resizedBitmap = Bitmap.createBitmap(BitmapOrg, 0, 0, width,

height, matrix, true);

// make a Drawable from Bitmap to allow to set the Bitmap

// to the ImageView, ImageButton or what ever

return new BitmapDrawable(resizedBitmap);

}

}