I have the following code fragment that I use to use photo library in device
It works well in ios7.0
But in ios5.0, when calling this part, my App release following errors
The building is succeeded and other operations work well
But when calling this part for using the photo library ,my app release errors
-(void)enterPhotoLib
{
UIImagePickerController *imagepickerController = [[UIImagePickerController alloc] init];
[imagepickerController setDelegate:self];
[imagepickerController setAllowsEditing:YES];
[imagepickerController setSourceType:UIImagePickerControllerSourceTypePhotoLibrary];
[self presentModalViewController:imagepickerController animated:YES];
}
if I have any errors in these codes ,please answer me
Thank you very much
Related
I implemented code for taking picture using AVCaptureSession. And i have button to pick image from Gallery. So, i need to use UIImagePickerController for picking image from gallery.
Is it possible to use UIImagepicker for picking Gallery and AVCaptureSession for taking picture. If i use this inside same app, appstore reject app or not?
Sure. You want to create your UIImagePickerController with a sourceType of UIImagePickerControllerSourceTypePhotoLibrary:
UIImagePickerController *picker = [[UIImagePickerController alloc] init];
picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
picker.delegate = self;
[self presentViewController:picker animated:YES completion:nil];
I can't imagine that Apple would reject you for doing this in the same app that you're using AVCaptureSession - they're providing these classes to do exactly what you're proposing, after all.
I want to make a camera application in which i want to start front camera automatically and capture image without user interaction. thanks in advance.
In addition to Robin's answer, add the following statements (before presentModalViewController:) to ensure that if the device has a front camera, that should be opened by default
if([UIImagePickerController isCameraDeviceAvailable:UIImagePickerControllerCameraDeviceFront]){
self.imagePicker.sourceType=UIImagePickerControllerSourceTypeCamera; //skipping this was crashing my app with some ** Assertion failure.
picker.cameraDevice = UIImagePickerControllerCameraDeviceFront;
}
Please note, if your app is compatible with devices running OS older than 4.0, you will have to put in conditional checks since cameraDevice property is available only in iOS 4.0 and later
The UIImagePickerController is a higher level abstraction to the camera. Have a look at AVFoundation examples to see how to get to the camera more directly.
The documentation for AVFoundation is here.
To do it while still using the picker, have a look at.1317978. Look around for some examples using UIGetScreenImage(). It used to be a private API but I think it is now allowed.
You might also want to look around at some examples concerning custom overlay, like this one.
I dont know how much you know about objective-c or iphone development. so I will tell how to take photos in your iphone app.
First you should get your self aquatinted with UIImagePickerController class
http://developer.apple.com/library/ios/#documentation/UIKit/Reference/UIImagePickerController_Class/UIImagePickerController/UIImagePickerController.html
here is some examples for the same from apple
http://developer.apple.com/library/ios/samplecode/PhotoLocations/
http://developer.apple.com/library/ios/samplecode/PrintPhoto/
http://developer.apple.com/library/ios/samplecode/PhotoPicker/
http://developer.apple.com/library/ios/samplecode/iPhoneCoreDataRecipes/
and next here is the code that will help you take the pics if you just place it in your .m file
- (void)selectPhotos
{
UIImagePickerController *picker = [[UIImagePickerController alloc] init];
picker.sourceType = UIImagePickerControllerSourceTypeCamera;
picker.delegate = self;
[self presentModalViewController:picker animated:YES];
[picker release];
}
- (void)imagePickerController:(UIImagePickerController *)picker
didFinishPickingImage:(UIImage *)image
editingInfo:(NSDictionary *)editingInfo
{
imageView.image = image;
[[picker parentViewController] dismissModalViewControllerAnimated:YES];
}
now get started.
Am all most done with my App.When am running the App on Simulator it works fine but when i run on the device for some time the debugger showing a message as "Program received signal 0".I tested the app with the help of instruments leaks it showing leaks.But am unable to figure out exactly where was the leak.Am releasing every object which am allocating.
For example am providing little part of my code:
if([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypePhotoLibrary])
{
UIImagePickerController *picker=[[UIImagePickerController alloc] init];
picker.delegate=self;
picker.sourceType=UIImagePickerControllerSourceTypePhotoLibrary;
[self presentModalViewController:picker animated:YES];
[picker release];
// NSFileHandle *fileHandle = [[NSFileHandle alloc]initWithFileDescript
}
In the above code leaks are showing at the UIImagePickerController *picker=[[UIImagePickerController alloc] init]; but am releasing it.
Can some one provide me the detail information abt the leaks and how to fix them .Thanks in advance.
In this line of code:
[self presentModalViewController:picker animated:YES];
self (the parent controller) is actually retaining your picker and won't release it until the parent controller explicitly dismisses it. As long as your parent controller are dismissing this picker at some point in your code you'll be fine.
I'm trying to present a UIImagePickerController from a UITableViewController subclass using the following code:
UIImagePickerController *picker = [[UIImagePickerController alloc] init];
if(library)
picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
else
picker.sourceType = UIImagePickerControllerSourceTypeCamera;
picker.delegate = self;
picker.allowsEditing = YES;
[self presentModalViewController:picker animated:YES];
[picker release];
If I create a brand new project and throw this code in, it works absolutely fine. However, in this project, for some reason, the UIImagePickerController's view appears as a blank white screen if I try to show the Photo Library, or shows the camera view but with no camera controls if I try to show the Camera.
Is there anything in a UITableViewController subclass that would be causing this? I get complaints about two-stage animations as well, but from what I've been able to find, this is an issue with Apple's code.
For some reason, changing the PRODUCT_NAME in the Info.plist (something which I was going to do anyway but hadn't gotten around to until just now) fixed this issue. I have absolutely no idea why, but I'm going to assume it was some obscure bug in the iPhone SDK.
I'm doing something with UIImagePickerController.
It works fine and the Picture browser does open, however, I get this message.
"Failed to save the videos metadata to the filesystem. Maybe the information did not conform to a plist."
What could be causing that? That is caused by this line
[self presentModalViewController:self.imgPicker animated:YES]; which is activated on a button click
Snippets of the code that I have below.
- (void)viewDidLoad {
self.imgPicker = [[UIImagePickerController alloc] init];
self.imgPicker.allowsImageEditing = YES;
self.imgPicker.delegate = self;
}
- (IBAction)grabImage {
[self presentModalViewController:self.imgPicker animated:YES];
}
Thanks,
Tee
Many people have seen that error. It appears to not actually have any negative impact on your app, however. So don't worry about and hope Apple fixes it in the next SDK.
Here's a thread on the Apple dev forums about it (Apple iPhone developer account required)
https://devforums.apple.com/message/144567#144567
No solutions have turned up to my knowledge.