Question

根据官方文档，我试图在android中重新创建一个可以访问本地图像元数据的函数。

这是代码（取自https://developer.android.com/preview/privacy/scoped-storage#media-from-native-code）

Uri photoUri = Uri.withAppendedPath(
        MediaStore.Images.Media.EXTERNAL_CONTENT_URI,
        cursor.getString(idColumnIndex)); //errors

final double[] latLong;

// Get location data from the ExifInterface class.
photoUri = MediaStore.setRequireOriginal(photoUri);
InputStream stream = getContentResolver().openInputStream(photoUri);
if (stream != null) {
    ExifInterface exifInterface = new ExifInterface(stream);
    double[] returnedLatLong = exifInterface.getLatLong();

    // If lat/long is null, fall back to the coordinates (0, 0).
    latLong = returnedLatLong != null ? returnedLatLong : new double[2];

    // Don't reuse the stream associated with the instance of "ExifInterface".
    stream.close();
} else {
    // Failed to load the stream, so return the coordinates (0, 0).
    latLong = new double[2];
}

Android Studio在“ cursor.getString”上出错，其余的失败。另外，如何使用此示例代码来实现图像的硬编码路径？

我们将不胜感激任何帮助。

Answer 1

尝试：

Uri photoUri = Uri.withAppendedPath(
        MediaStore.Images.Media.EXTERNAL_CONTENT_URI,
        cursor.getString(String.valueOf(idColumnIndex));

或：

 cursor.getInt(idColumnIndex);

从图像中提取元数据

1 个答案: