安卓：保存的照片与照片图像 [英] Android: Saving photo with image on photo

问题描述

当我带着我的Andr​​oid相机拍摄照片，有一个形象（ imageview3 ）我的屏幕我要救我的照片上。

When I take a picture with my Android camera, there is an image (imageview3) on my screen that I want to save with my picture.

下面是我的 onPictureTaken 法

public void onPictureTaken(byte[] data, Camera camera) {
    File imagesFolder = new File(Environment.getExternalStorageDirectory(), "/Ker");
    imagesFolder.mkdirs();
    String fileName = "Ker_.jpg";
    output = new File(imagesFolder, fileName);
    ImageView view = (ImageView) gameactivity.findViewById(R.id.imageView3);
    view.setDrawingCacheEnabled(true);
    Bitmap b = view.getDrawingCache();
    FileOutputStream fos = null;
    try {
        fos = new FileOutputStream(output);
    } catch (FileNotFoundException e1) {
        e1.printStackTrace();
    }
    b.compress(CompressFormat.JPEG, 95, fos);
    try {
        fos.write(data);
        fos.close();
    } catch (FileNotFoundException e) {
        e.printStackTrace();
    }
        catch (IOException e) {
        e.printStackTrace();
    }
    camera.stopPreview();
}

当我打开文件夹，保存的图片仅仅是 imageview3 黑色背景。为什么真正的摄像机视图没有保存？

When I open the folder, the picture saved is only the imageview3 with a black background. Why has the real camera view not been saved?

修改
我试图用帆布的东西太多：

EDIT I'm trying something with canvas too:

output = new File(imagesFolder, fileName);
            ImageView view = (ImageView) gameactivity.findViewById(R.id.imageView3);
            view.setDrawingCacheEnabled(true);
            Bitmap b = view.getDrawingCache();   
            FileOutputStream fos = null;
            try {
                fos = new FileOutputStream(output);
                fos.write(data);
                fos.close();
            } catch (FileNotFoundException e1) {
                // TODO Auto-generated catch block
                e1.printStackTrace();
            }
              catch (IOException e) {
                    e.printStackTrace();
            }
            FileOutputStream fos2 = null;
            b.compress(CompressFormat.JPEG, 95, fos2);

            try {
                Bitmap bitmap = BitmapFactory.decodeFileDescriptor(fos.getFD());
                Bitmap bitmap2 = BitmapFactory.decodeFileDescriptor(fos2.getFD());
                Canvas canvas = new Canvas(bitmap);
                canvas.drawBitmap(bitmap2, null, null);
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }

这是否正确？如何在画布保存到我的SD卡一个文件（即写从FileOutputStream中画布上的数据）

Is that correct? How to save the canvas into a file on my sdcard (ie write data from canvas on fileoutputstream)

推荐答案

你追加的ImageView从相机的JPEG和JPEG将成为一个单一的文件。

You're appending the JPEG of the imageview and the JPEG from the camera into a single file.

创建为每个文件一个单独的文件输出流，并从Bitmap.com preSS（）中的数据和onPictureTaken数据阵列写入到自己的数据流。

Create a separate file output stream for each file, and write the data from Bitmap.compress() and the onPictureTaken data array into their own streams.

如果您想将两个图像组合成一个单一的形象，你需要去code中的数据阵列成位图，然后用画布绘制ImageView的位图和摄像机捕获的位图在上你想要的，然后安排帆布出保存为单个JPEG。

If you want the two images to be combined into a single image, you'll need to decode the data array into a Bitmap, and then use a Canvas to draw the ImageView bitmap and the camera-captured Bitmap onto the canvas in the arrangement you want, and then save that out as a single jpeg.

您不能简单地连接两个COM pressed JPEG比特流在一起;该文件格式不这样的。

You can't simply concatenate two compressed JPEG bitstreams together; the file format doesn't work that way.

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