Android 图像大小调整代码错误

大家好，这是我们可以调整图像大小的代码，但在第一行和第二行有一个问题，我无法解决，请帮助我

Bitmap image2 = (Bitmap) data.getExtras().get("data");
        imageView.setImageBitmap(image2);
        /*String incident_ID = IncidentFormActivity.incident_id;*/

        String imagepath = "\1.jpg";
        File file = new File(imagepath);

                double xFactor = 0;
                double width = Double.valueOf(image2.getWidth());
                Log.v("WIDTH", String.valueOf(width));
                double height = Double.valueOf(image2.getHeight());
                Log.v("height", String.valueOf(height));



        Log.v("Nheight", String.valueOf(width*xFactor));
        Log.v("Nweight", String.valueOf(height*xFactor));
        int Nheight = 480;
        int NWidth = (int) ((Nheight * width)/height);

        Bitmap bm = Bitmap.createScaledBitmap( image2,NWidth, Nheight, true);
        file.createNewFile();
        FileOutputStream ostream = new FileOutputStream(file);
        bm.compress(CompressFormat.PNG, 100, ostream);
        ostream.close(); 

---

使用此功能。它非常适合我

static public Bitmap getResizedBitmap(Bitmap image, int maxSize) {
        int width = image.getWidth();
        int height = image.getHeight();
        float bitmapRatio = width / height;
        if (bitmapRatio > 0) {
            width = maxSize;
            height = (int) (width / bitmapRatio);
        } else {
            height = maxSize;
            width = (int) (height * bitmapRatio);
        }
        return Bitmap.createScaledBitmap(image, width, height, true);
}

在这里，最大尺寸指的是像素，直到图像被删除为止

例如，如果您想将像素减少到640像素 就叫`

Bitmap image2 = (Bitmap) data.getExtras().get("data"); 
getResizedBitmap(image2 , 640); 

---

错误发生在以下行SBitmap image2=（位图）data.getExtras（）.get（“数据”）；设置图像位图（图像2）；请发布错误。查看此API此API将帮助您从各种源创建位图