我正在尝试使用 android 原生相机捕捉图像,保存的图像很好但不包含通常的 EXIF 数据(gps 标签、方向...)
我需要做什么才能同时保存 EXIF?
@Override
public void onClick(View v) {
Intent takePictureIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
// Ensure that there's a camera activity to handle the intent
if (takePictureIntent.resolveActivity(getPackageManager()) != null) {
// Create the File where the photo should go
File photoFile = null;
try {
photoFile = createImageFile();
} catch (IOException ex) {
// Error occurred while creating the File
}
// Continue only if the File was successfully created
if (photoFile != null) {
takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT,Uri.fromFile(photoFile));
imageuri = Uri.fromFile(photoFile);
startActivityForResult(takePictureIntent, CAMERA_PIC_REQUEST);
}
}
/*Intent cameraIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(cameraIntent, CAMERA_PIC_REQUEST);*/
}
}
@SuppressLint("SimpleDateFormat")
private File createImageFile() throws IOException {
// Create an image file name
String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
String imageFileName = "JPEG_" + timeStamp + "_";
File storageDir = Environment.getExternalStoragePublicDirectory(
Environment.DIRECTORY_PICTURES);
File image = File.createTempFile(
imageFileName, /* prefix */
".jpg", /* suffix */
storageDir /* directory */
);
// Save a file: path for use with ACTION_VIEW intents
mCurrentPhotoPath = "file:" + image.getAbsolutePath();
return image;
}
最佳答案
以下是将带有 EXIF 数据(位置数据)的图像保存到图库的方法:
private String saveToGallery (Bitmap bitmapImage){
ContextWrapper cw = new ContextWrapper(getApplicationContext());
// path to Directory
String photoDir = Environment.getExternalStorageDirectory() + "/" + Environment.DIRECTORY_DCIM + "/";
File directory = new File(photoDir);
// Creates image file with the name "newimage.jpg"
File myfilepath = new File(directory, "newimage.jpg");
FileOutputStream fos = null;
try {
fos = new FileOutputStream(myfilepath);
// Use the compress method on the BitMap object to write image to the OutputStream
bitgallery.compress(Bitmap.CompressFormat.JPEG, 80, fos);
fos.flush();
fos.close();
myfilepath.setReadable(true, false);
} catch (Exception e) {
e.printStackTrace();
}
Uri bitmapUri = Uri.fromFile(myfilepath);
String currentImageFile = bitmapUri.getPath();
//Writes Exif Information to the Image
try {
ExifInterfaceEx exif = new ExifInterfaceEx(currentImageFile);
Log.w("Location", String.valueOf(targetLocation));
exif.setLocation(targetLocation);
exif.saveAttributes();
} catch (Exception e) {
e.printStackTrace();
}
// Updating Gallery with the Image (Sending Broadcast to Gallery)
Intent mediaScanIntent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE);
File f = new File(currentImageFile);
Uri contentUri = Uri.fromFile(f);
mediaScanIntent.setData(contentUri);
this.sendBroadcast(mediaScanIntent);
return directory.getAbsolutePath();
}
关于java - 如何使用 EXIF 保存拍摄图像,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/20819491/