android - how to know geotagging feature from camera is on or no?

问题

how to know geotagging feature from camera is on or no?

this code for open camera phone

Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
        fileUri = getOutputMediaFileUri(MEDIA_TYPE_IMAGE);


        intent.putExtra(MediaStore.EXTRA_OUTPUT, fileUri);
        // start the image capture Intent
        startActivityForResult(intent, CAMERA_CAPTURE_IMAGE_REQUEST_CODE);

回答1:

You can't check this programatically. You'll have to read the tags of the pictures taken and check the GPS-coordinates manually, if the tags are empty then geo-tagging is disabled.

You can use the ExifInterface class to read the EXIF metadata from JPEG images. Here's the official docs link explaining this:

http://developer.android.com/reference/android/media/ExifInterface.html

Here's sample code you can use to read the tags:

Bundle bundle = getIntent().getExtras();

if (null != bundle) {
    String filepath = bundle.getString(FILE_PATH_KEY);

    try {
        ExifInterface exif = new ExifInterface(filepath);
        StringBuilder builder = new StringBuilder();

        builder.append("Date & Time: " + getExifTag(exif, ExifInterface.TAG_DATETIME) + "\n\n");
        builder.append("Flash: " + getExifTag(exif, ExifInterface.TAG_FLASH) + "\n");
        builder.append("Focal Length: " + getExifTag(exif, ExifInterface.TAG_FOCAL_LENGTH) + "\n\n");
        builder.append("GPS Datestamp: " + getExifTag(exif, ExifInterface.TAG_FLASH) + "\n");
        builder.append("GPS Latitude: " + getExifTag(exif, ExifInterface.TAG_GPS_LATITUDE) + "\n");
        builder.append("GPS Latitude Ref: " + getExifTag(exif, ExifInterface.TAG_GPS_LATITUDE_REF) + "\n");
        builder.append("GPS Longitude: " + getExifTag(exif, ExifInterface.TAG_GPS_LONGITUDE) + "\n");
        builder.append("GPS Longitude Ref: " + getExifTag(exif, ExifInterface.TAG_GPS_LONGITUDE_REF) + "\n");
        builder.append("GPS Processing Method: " + getExifTag(exif, ExifInterface.TAG_GPS_PROCESSING_METHOD) + "\n");
        builder.append("GPS Timestamp: " + getExifTag(exif, ExifInterface.TAG_GPS_TIMESTAMP) + "\n\n");
        builder.append("Image Length: " + getExifTag(exif, ExifInterface.TAG_IMAGE_LENGTH) + "\n");
        builder.append("Image Width: " + getExifTag(exif, ExifInterface.TAG_IMAGE_WIDTH) + "\n\n");
        builder.append("Camera Make: " + getExifTag(exif, ExifInterface.TAG_MAKE) + "\n");
        builder.append("Camera Model: " + getExifTag(exif, ExifInterface.TAG_MODEL) + "\n");
        builder.append("Camera Orientation: " + getExifTag(exif, ExifInterface.TAG_ORIENTATION) + "\n");
        builder.append("Camera White Balance: " + getExifTag(exif, ExifInterface.TAG_WHITE_BALANCE) + "\n");

        builder = null;
    } catch (IOException e) {
        e.printStackTrace();
    }
}

来源：https://stackoverflow.com/questions/40836603/android-how-to-know-geotagging-feature-from-camera-is-on-or-no

标签

android

android-camera

geotagging