Get last image from Photos.app?
This code snippet will get the latest image from the camera roll (iOS 7 and below):
ALAssetsLibrary *library = [[ALAssetsLibrary alloc] init];
// Enumerate just the photos and videos group by using ALAssetsGroupSavedPhotos.
[library enumerateGroupsWithTypes:ALAssetsGroupSavedPhotos usingBlock:^(ALAssetsGroup *group, BOOL *stop) {
// Within the group enumeration block, filter to enumerate just photos.
[group setAssetsFilter:[ALAssetsFilter allPhotos]];
// Chooses the photo at the last index
[group enumerateAssetsWithOptions:NSEnumerationReverse usingBlock:^(ALAsset *alAsset, NSUInteger index, BOOL *innerStop) {
// The end of the enumeration is signaled by asset == nil.
if (alAsset) {
ALAssetRepresentation *representation = [alAsset defaultRepresentation];
UIImage *latestPhoto = [UIImage imageWithCGImage:[representation fullScreenImage]];
// Stop the enumerations
*stop = YES; *innerStop = YES;
// Do something interesting with the AV asset.
[self sendTweet:latestPhoto];
}
}];
} failureBlock: ^(NSError *error) {
// Typically you should handle an error more gracefully than this.
NSLog(@"No groups");
}];
iOS 8 and above:
PHFetchOptions *fetchOptions = [[PHFetchOptions alloc] init];
fetchOptions.sortDescriptors = @[[NSSortDescriptor sortDescriptorWithKey:@"creationDate" ascending:YES]];
PHFetchResult *fetchResult = [PHAsset fetchAssetsWithMediaType:PHAssetMediaTypeImage options:fetchOptions];
PHAsset *lastAsset = [fetchResult lastObject];
[[PHImageManager defaultManager] requestImageForAsset:lastAsset
targetSize:self.photoLibraryButton.bounds.size
contentMode:PHImageContentModeAspectFill
options:PHImageRequestOptionsVersionCurrent
resultHandler:^(UIImage *result, NSDictionary *info) {
dispatch_async(dispatch_get_main_queue(), ^{
[[self photoLibraryButton] setImage:result forState:UIControlStateNormal];
});
}];
iOS: Get last image from the camera roll
Please check this code... it may help you.
PHFetchOptions *fetchOptions = [[PHFetchOptions alloc] init];
fetchOptions.sortDescriptors = @[[NSSortDescriptor sortDescriptorWithKey:@"creationDate" ascending:YES]];
PHFetchResult *fetchResult = [PHAsset fetchAssetsWithMediaType:PHAssetMediaTypeImage options:fetchOptions];
PHAsset *lastAsset = [fetchResult lastObject];
[[PHImageManager defaultManager] requestImageForAsset:lastAsset
targetSize:self.photoLibraryButton.bounds.size
contentMode:PHImageContentModeAspectFill
options:PHImageRequestOptionsVersionCurrent
resultHandler:^(UIImage *result, NSDictionary *info) {
dispatch_async(dispatch_get_main_queue(), ^{
[[self photoLibraryButton] setImage:result forState:UIControlStateNormal];
});
}];
Swift - how to get last taken 3 photos from photo library?
Here's a solution using the Photos framework available for devices iOS 8+ :
import Photos
class ViewController: UIViewController {
var images:[UIImage] = []
func fetchPhotos () {
// Sort the images by descending creation date and fetch the first 3
let fetchOptions = PHFetchOptions()
fetchOptions.sortDescriptors = [NSSortDescriptor(key:"creationDate", ascending: false)]
fetchOptions.fetchLimit = 3
// Fetch the image assets
let fetchResult: PHFetchResult = PHAsset.fetchAssets(with: PHAssetMediaType.image, options: fetchOptions)
// If the fetch result isn't empty,
// proceed with the image request
if fetchResult.count > 0 {
let totalImageCountNeeded = 3 // <-- The number of images to fetch
fetchPhotoAtIndex(0, totalImageCountNeeded, fetchResult)
}
}
// Repeatedly call the following method while incrementing
// the index until all the photos are fetched
func fetchPhotoAtIndex(_ index:Int, _ totalImageCountNeeded: Int, _ fetchResult: PHFetchResult) {
// Note that if the request is not set to synchronous
// the requestImageForAsset will return both the image
// and thumbnail; by setting synchronous to true it
// will return just the thumbnail
let requestOptions = PHImageRequestOptions()
requestOptions.isSynchronous = true
// Perform the image request
PHImageManager.default().requestImage(for: fetchResult.object(at: index) as PHAsset, targetSize: view.frame.size, contentMode: PHImageContentMode.aspectFill, options: requestOptions, resultHandler: { (image, _) in
if let image = image {
// Add the returned image to your array
self.images += [image]
}
// If you haven't already reached the first
// index of the fetch result and if you haven't
// already stored all of the images you need,
// perform the fetch request again with an
// incremented index
if index + 1 < fetchResult.count && self.images.count < totalImageCountNeeded {
self.fetchPhotoAtIndex(index + 1, totalImageCountNeeded, fetchResult)
} else {
// Else you have completed creating your array
print("Completed array: \(self.images)")
}
})
}
}
Get last captured image?
After take photo:
MainActivity
String filePath;
@Override
protected void onCreate(Bundle savedInstanceState) {
...
}
private void onCaptureImageResult(Intent data) {
Bitmap thumbnail = (Bitmap) data.getExtras().get("data");
ByteArrayOutputStream bytes = new ByteArrayOutputStream();
thumbnail.compress(Bitmap.CompressFormat.JPEG, 90, bytes);
String fileName = "yourPhotoName" + ".jpg"
filePath = "pathOfMyAppImageFolder" + fileName;
File destination = new File(filePath);
FileOutputStream fo;
try {
destination.createNewFile();
fo = new FileOutputStream(destination);
fo.write(bytes.toByteArray());
fo.close();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
yourButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent(getApplicationContext(), AnotherActivity.class);
intent.putExtra("filePath", filePath)
startActivity(intent);
}
});
AnotherActivity
String filePath;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Intent intent = this.getIntent();
filePath = intent.getStringExtra("filePath");
File imgFile = new File(filePath);
if(imgFile.exists()){
Bitmap myBitmap = BitmapFactory.decodeFile(imgFile.getAbsolutePath());
ImageView myImage = (ImageView) findViewById(R.id.imageviewTest);
myImage.setImageBitmap(myBitmap);
}
}
Take the last photo of the folder:
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
List files = getListFiles(new File("MyAppImageFolderPath"));
File imgFile = files.get(files.size());
if(imgFile.exists()){
Bitmap myBitmap = BitmapFactory.decodeFile(imgFile.getAbsolutePath());
ImageView myImage = (ImageView) findViewById(R.id.imageviewTest);
myImage.setImageBitmap(myBitmap);
}
}
private List getListFiles(File parentDir) {
ArrayList inFiles = new ArrayList();
File[] files = parentDir.listFiles();
for (File file : files) {
if (file.isDirectory()) {
inFiles.addAll(getListFiles(file));
} else {
if(file.getName().endsWith(".jpg")){ //change to your image extension
inFiles.add(file);
}
}
}
return inFiles;
}
Android - Get latest photos taken
I think this post https://stackoverflow.com/a/4495753/2014374 should help you finding your answer.
It used content resolver over Images.Media.EXTERNAL_CONTENT_URI and filters the results by getting the Media.BUCKET_ID from media bucket name "/DCIM/Camera"; Hope this helps.
get the last picture taken by user
// Find the last picture
String[] projection = new String[]{
MediaStore.Images.ImageColumns._ID,
MediaStore.Images.ImageColumns.DATA,
MediaStore.Images.ImageColumns.BUCKET_DISPLAY_NAME,
MediaStore.Images.ImageColumns.DATE_TAKEN,
MediaStore.Images.ImageColumns.MIME_TYPE
};
final Cursor cursor = getContext().getContentResolver()
.query(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, projection, null,
null, MediaStore.Images.ImageColumns.DATE_TAKEN + " DESC");
// Put it in the image view
if (cursor.moveToFirst()) {
final ImageView imageView = (ImageView) findViewById(R.id.pictureView);
String imageLocation = cursor.getString(1);
File imageFile = new File(imageLocation);
if (imageFile.exists()) { // TODO: is there a better way to do this?
Bitmap bm = BitmapFactory.decodeFile(imageLocation);
imageView.setImageBitmap(bm);
}
}
I'm still working on the MMS sending part.
How to retrieve the most recent photo from Camera Roll on iOS?
One way is to use AssetsLibrary and use n - 1 as the index for enumeration.
ALAssetsLibrary *assetsLibrary = [[ALAssetsLibrary alloc] init];
[assetsLibrary enumerateGroupsWithTypes:ALAssetsGroupSavedPhotos
usingBlock:^(ALAssetsGroup *group, BOOL *stop) {
if (nil != group) {
// be sure to filter the group so you only get photos
[group setAssetsFilter:[ALAssetsFilter allPhotos]];
if (group.numberOfAssets > 0) {
[group enumerateAssetsAtIndexes:[NSIndexSet indexSetWithIndex:group.numberOfAssets - 1]
options:0
usingBlock:^(ALAsset *result, NSUInteger index, BOOL *stop) {
if (nil != result) {
ALAssetRepresentation *repr = [result defaultRepresentation];
// this is the most recent saved photo
UIImage *img = [UIImage imageWithCGImage:[repr fullResolutionImage]];
// we only need the first (most recent) photo -- stop the enumeration
*stop = YES;
}
}];
}
}
*stop = NO;
} failureBlock:^(NSError *error) {
NSLog(@"error: %@", error);
}];
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