GPS标记在机器人拍摄的图像 [英] GPS tagged captured images in android

问题描述

我已抓获使用手机相机拍摄照片并将其存储在变量照片

I have captured a picture using the phone camera and stored it in variable "photo"

Bitmap photo = (Bitmap) data.getExtras().get("data"); 

我已使用电话的GPS还获得的纬度和经度

I have also obtained the latitude and longitude using the phone gps

lat = location.getLatitude();
lon = location.getLongitude();

我如何把这种GPS数据的图像只？

How do I incorporate this gps data in the image only?

P.S。 GPS标记的图像可以手动通过启用用户的相机设置GPS的标签选项被捕获。我想，以确保所拍摄的图像是强制GPS标记。

P.S. GPS tagged images can be captured manually by enabling the GPS tag option in the camera settings by the user. I want to make sure that the image captured is compulsorily GPS tagged.

推荐答案

您不能将其设置为位图，位图仅仅是一个字节数组，图像像素。 你必须将它保存到支持元数据文件后，将这些坐标（例如PNG或JPG格式）

you can't set it to the Bitmap, the Bitmap is just a byte array with the image pixels. You have to apply those coordinates after you save it to a file that supports Metadata (for example PNG or JPG)

要做到这一点，你使用 ExifInterface

To do that you use the ExifInterface

code是类似于

String filePath = Enviroment.getExternalStorageDirectory() + "/MyApp/photo.png";
OutputStream out = new BufferedOutputStream(new FileOutputStream(new File(filePath)));
photo.compress(Bitmap.CompressFormat.PNG, 100, out);
out.flush();
out.close();
ExifInterface exif = new ExifInterface(filePath);

// call this next setAttributes a few times to write all the GPS data to it.
exif.setAttribute(... );

// don't forget to save
exif.saveAttributes();

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