my Application use didFinishPickingMediaWithInfo
for take photo and i want to save it in camera roll
UIImage *orgImage=[[UIImage alloc]init];
orgImage = (UIImage *)[info objectForKey:UIImagePickerControllerOriginalImage];
if (picker.sourceType == UIImagePickerControllerSourceTypeCamera)
{
UIImageWriteToSavedPhotosAlbum(orgImage, nil, nil, nil);}
i save complete but when i get info same image from camera roll
meta data not have dateTimeOriginal
/ Camera Roll
if ([info valueForKey:UIImagePickerControllerReferenceURL] != nil)
{
NSURL *imageURL = [info valueForKey:UIImagePickerControllerReferenceURL];
if(imageURL)
{
ALAssetsLibrary* assetslibrary = [[ALAssetsLibrary alloc] init];
[assetslibrary assetForURL:imageURL
resultBlock:^(ALAsset *myasset)
{
ALAssetRepresentation *representation = [myasset defaultRepresentation];
NSDictionary *metadata = representation.metadata;
NSDictionary *exifData = [metadata objectForKey:#"{Exif}"];
NSString *dateTimeOriginal = [exifData objectForKey:#"DateTimeOriginal"];
}
failureBlock:^(NSError *myerror)
{
// Error
}];
}
}
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {
NSURL *url = [info objectForKey:#"UIImagePickerControllerReferenceURL"];
ALAssetsLibrary* assetslibrary = [[ALAssetsLibrary alloc] init];
[assetslibrary assetForURL:url
resultBlock:^(ALAsset *asset) {
NSDate *myDate = [asset valueForProperty:ALAssetPropertyDate];
NSLog(#"Date: %#", myDate);
} failureBlock:^(NSError *error) {
NSLog(#"Error");
}];
[picker dismissViewControllerAnimated:YES completion:nil];
}
Related
I am sorry for the long post but I am at my wits end and have been stumped for days over this. Here's the scenario. My app loads a response from core data, converts the values to NSStrings so that I can add them to an NSDictionary. Then the NSDictionary is converted to NSData so I can attach it as a file to email. The purpose of this is so I can create a database of information including images, videos, etc. I was able to get everything to work except I am having an issue with an NSMutableArray. Here's the process:
I create an event and then load the data for exporting with this code.
EventDB *per = [[EventDB alloc]init];
per.customLayoutArray = [record.customLayoutArray description] ?
[record.customLayoutArray description] : #"";
NSDictionary *dict = [per dictionaryWithValuesForKeys:#[#"customLayoutArray"];
NSData *data = [NSJSONSerialization dataWithJSONObject:dict options:0 error:NULL];
Then I email the data using MFMailComposer. Then I have a custom UTI that allows me the open the url from the email and then I import the data and load it into my coredata entity with this
if([[url pathExtension] isEqualToString:#"ipix"]) {
NSData *data = [NSData dataWithContentsOfURL:url];
NSError *error;
NSDictionary *jsonData = [NSJSONSerialization JSONObjectWithData:data
options:kNilOptions
error:&error];
NSEntityDescription *entity = [NSEntityDescription entityForName:#"TSPItem"
inManagedObjectContext:self.managedObjectContext];
TSPItem *record = (TSPItem *)[[NSManagedObject alloc] initWithEntity:entity
insertIntoManagedObjectContext:self.managedObjectContext];
if (record) {
NSString *datetime = [jsonData objectForKey:#"customLayoutArray"];
record.customLayoutArray = [[datetime propertyList] mutableCopy];
}
That works fine. It does import the way I want but when I launch the event I get this crash message
** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason:
'-[__NSCFString apply]: unrecognized selector sent to instance 0x1c81a5f60
Now here's the code where it crashes.
NSMutableArray *archiveArray = self.record.customLayoutArray;
NSString *mycustom = [NSString stringWithFormat:#"%#_customlayout",
self.record.eventname];
NSData *data = [NSKeyedArchiver archivedDataWithRootObject:archiveArray];
[[NSUserDefaults standardUserDefaults] setObject:data forKey:mycustom];
self.customLayoutArray = [NSKeyedUnarchiver unarchiveObjectWithData:data];
NSLog(#"BOOTH EVENT ID %#", self.customLayoutArray);
[self.customLayoutArray makeObjectsPerformSelector:#selector(apply)];
This is the log from BOOTH EVENT ID
BOOTH EVENT ID (
"<Rectangle:0x102d38cb0self.scaleValue=1.842393\n, self.rotateValue=0.000000\n, self.width=368.478516\n, self.height=368.478516\n, self.radius=0\n, self.frame={{104, 113.5}, {200, 200}}\n, self.isApplied=NO\n>",
"<Rectangle:0x102d393c0self.scaleValue=1.000000\n, self.rotateValue=0.000000\n, self.width=200.000000\n, self.height=200.000000\n, self.radius=0\n, self.frame={{253, 273.5}, {200, 200}}\n, self.isApplied=NO\n>"
)
The app crashes here. Now if I load the original event on my iPad (the one that I didn't export) the app works perfect and the NSLog response for BOOTH EVENT ID is identical.
The "apply" section refers to this file.
#import "Rectangle.h"
#import "DeviceSize.h"
#implementation Rectangle
- (id)initWithFrame:(CGRect)frame
{
self = [super initWithFrame:frame];
if (self) {
// Initialization code
self.clipsToBounds = YES;
self.userInteractionEnabled = YES;
}
return self;
}
- (void)encodeWithCoder:(NSCoder *)coder {
[coder encodeObject:[NSNumber numberWithFloat:self.scaleValue] forKey:#"ScaleValue"];
[coder encodeObject:[NSNumber numberWithFloat:self.rotateValue] forKey:#"RotateValue"];
[coder encodeObject:[NSNumber numberWithFloat:self.width] forKey:#"Width"];
[coder encodeObject:[NSNumber numberWithFloat:self.height] forKey:#"Height"];
[coder encodeObject:[NSNumber numberWithInteger:self.radius] forKey:#"Radius"];
[coder encodeObject:[NSNumber numberWithBool:self.isApplied] forKey:#"isApplied"];
[coder encodeObject:self.image forKey:#"Image"];
[coder encodeObject:self.backgroundColor forKey:#"BackgroundColor"];
[coder encodeObject:[NSValue valueWithCGPoint:self.center] forKey:#"CenterPoint"];
}
- (id)initWithCoder:(NSCoder *)coder {
self = [super init];
if (self) {
self.scaleValue = [[coder decodeObjectForKey:#"ScaleValue"] floatValue];
self.rotateValue = [[coder decodeObjectForKey:#"RotateValue"] floatValue];
self.width = [[coder decodeObjectForKey:#"Width"] floatValue];
self.height = [[coder decodeObjectForKey:#"Height"] floatValue];
self.radius = [[coder decodeObjectForKey:#"Radius"] integerValue];
self.isApplied = [[coder decodeObjectForKey:#"isApplied"] boolValue];
[self.layer setCornerRadius:self.radius];
self.image = [coder decodeObjectForKey:#"Image"];
[self setBackgroundColor:[coder decodeObjectForKey:#"BackgroundColor"]];
//
if (self.width == self.height)
{
CGRect rect = CGRectMake(0, 0,200, 200);
self.frame = rect;
}
if (self.width > self.height)
{
CGRect rect = CGRectMake(0, 0,200, 150);
self.frame = rect;
}
if (self.width < self.height)
{
CGRect rect = CGRectMake(0, 0,150, 200);
self.frame = rect;
}
self.center = [[coder decodeObjectForKey:#"CenterPoint"] CGPointValue];
}
return self;
}
- (void)drawRect:(CGRect)rect
{
/* Set UIView Border */
// Get the contextRef
CGContextRef contextRef = UIGraphicsGetCurrentContext();
// Set the border width
CGContextSetLineWidth(contextRef, 5.0);
// Set the border color to RED
CGContextSetRGBStrokeColor(contextRef, 255.0, 0.0, 0.0, 1.0);
// Draw the border along the view edge
CGContextStrokeRect(contextRef, rect);
}
- (BOOL)canBecomeFirstResponder {
return YES;
}
- (NSString *)description {
NSMutableString *description = [NSMutableString stringWithFormat:#"<%#:%p", NSStringFromClass([self class]), self];
[description appendFormat:#"self.scaleValue=%f\n", self.scaleValue];
[description appendFormat:#", self.rotateValue=%f\n", self.rotateValue];
[description appendFormat:#", self.width=%f\n", self.width];
[description appendFormat:#", self.height=%f\n", self.height];
[description appendFormat:#", self.radius=%li\n", (long)self.radius];
[description appendFormat:#", self.frame=%#\n", NSStringFromCGRect(self.frame)];
[description appendFormat:#", self.isApplied=%#\n", self.isApplied ? #"YES" : #"NO"];
[description appendString:#">"];
return description;
}
- (id)copyWithZone:(NSZone *)zone {
Rectangle *copy = [[[self class] allocWithZone:zone] init];
if (copy != nil) {
copy.scaleValue = self.scaleValue;
copy.rotateValue = self.rotateValue;
copy.width = self.width;
copy.height = self.height;
copy.radius = self.radius;
copy.frame = self.frame;
copy.isApplied = self.isApplied;
}
return copy;
}
#end
#implementation Rectangle(ApplyRotate)
#pragma mark -
- (Rectangle *)apply {
if (self.isApplied) {
return self;
}
Rectangle *rectangle = self;
CGPoint centerPoint = rectangle.center;
CGAffineTransform rotate = CGAffineTransformMakeRotation(DEGREES_TO_RADIANS(rectangle.rotateValue));
CGAffineTransform scale = CGAffineTransformMakeScale(rectangle.scaleValue, rectangle.scaleValue);
CGAffineTransform scaleAndRotate = CGAffineTransformConcat(rotate, scale);
rectangle.transform = scaleAndRotate;
rectangle.center = centerPoint;
rectangle.isApplied = YES;
return rectangle;
}
#end
I have been trying to figure this issue out for days now with no luck, any advice would be greatly appreciated.
I have a uitableviewcontroller that loads data from core data. When the tableview loads, the first 6 (no matter how many objects are actually saved) are loaded. When I begin to scroll down, all of the following cells are labeled "(null)". When I go back up to the top, the data in the original 6 cells are replaced with "(null)". When I logged the contents of the array from the fetch, all of the objects from core data get logged, but when I log the contents of the cell, the first 6 contents get logged, the a long list of rows with (null) get logged.
I've tried a lot of differnet things to debug this, but nothing has worked so far.
Here is the tableviewcontroller file
-(void)viewWillAppear:(BOOL)animated
{
[self setTitle:#"My Safe"];
self.dictionaryWithContent = [[NSMutableDictionary alloc] init];
self.search = #0;
[self fetchDataFromCoreData];
[self.tableView setFrame:CGRectMake(0, 88, self.tableView.bounds.size.width, self.tableView.bounds.size.height)];
self.searchResults = [[NSMutableArray alloc] init];
self.tableView.tableHeaderView = [[UIView alloc] initWithFrame:CGRectMake(0.0f, 0.0f, self.tableView.bounds.size.width, 44.0f)];
UIBarButtonItem *changeViewsButton = [[UIBarButtonItem alloc] initWithTitle:#"Tweets By User"
style:UIBarButtonItemStylePlain
target:self
action:#selector(switchViewControllers)];
self.navigationItem.rightBarButtonItem = changeViewsButton;
self.tableView.delegate = self;
self.tableView.dataSource = self;
// CGRect searchView = CGRectMake(0, 44, self.tableView.bounds.size.width, 44);
self.searchController = [[UISearchController alloc] initWithSearchResultsController:nil];
self.searchController.searchResultsUpdater = self;
[self.searchController loadViewIfNeeded];
self.tableView.tableHeaderView = self.searchController.searchBar;
self.searchController.dimsBackgroundDuringPresentation = NO;
self.searchController.searchBar.barTintColor = twitter_blue;
self.searchController.delegate = self;
self.searchController.searchBar.delegate = self;
[self.tableView deselectRowAtIndexPath:[self.tableView indexPathForSelectedRow] animated:animated];
self.navigationController.navigationBar.barTintColor = twitter_blue;
self.navigationController.navigationBar.translucent = NO;
self.navigationController.navigationBar.tintColor = [UIColor whiteColor];
[self.navigationController.navigationBar setTitleTextAttributes:#{NSForegroundColorAttributeName : [UIColor whiteColor]}];
}
-(void)fetchDataFromCoreData
{
AppDelegate *del = [[AppDelegate alloc] init];
NSManagedObjectContext *context = del.managedObjectContext;
NSString *entity;
entity = [NSString stringWithFormat:#"Tweet"];
NSFetchRequest *fet = [NSFetchRequest fetchRequestWithEntityName:entity];
NSError *e;
NSArray *array = [context executeFetchRequest:fet error:&e];
self.arrayWithContent = [[NSArray alloc] initWithArray:array];
for (Tweet *t in self.arrayWithContent) {
NSLog(#"array %#", t.messageOfTweet);
}
}
-(void)switchViewControllers
{
PCRSavedTweetByUserTableViewController *vc = [[PCRSavedTweetByUserTableViewController alloc] init];
PCRNavigationBarController *navBarControllerOfSafeSide = [[PCRNavigationBarController alloc] initWithRootViewController:vc];
[self.navigationController presentViewController:navBarControllerOfSafeSide animated:YES completion:nil];
}
#pragma mark Status bar
- (void)willPresentSearchController:(UISearchController *)searchController {
// do something before the search controller is presented
self.navigationController.navigationBar.translucent = YES;
}
-(void)willDismissSearchController:(UISearchController *)searchController
{
self.navigationController.navigationBar.translucent = NO;
searchController = self.searchController;
}
-(void)updateSearchResultsForSearchController:(UISearchController *)searchController
{
searchController = self.searchController;
}
- (void)searchBarSearchButtonClicked:(UISearchBar *)searchBar
{
self.search = #1;
[self.searchResults removeAllObjects];
NSString *searchBarString = self.searchController.searchBar.text;
for (Tweet *tweet in self.arrayWithContent){
if ([tweet.messageOfTweet containsString:searchBarString] || [tweet.userNameOfTweetUser containsString:searchBarString] || [tweet.whoPosted.name containsString:searchBarString]) {
[self.searchResults addObject:tweet];
}
}
[self.tableView reloadData];
}
- (void)searchBarCancelButtonClicked:(UISearchBar *)searchBar
{
[self.searchController.searchBar resignFirstResponder];
self.search = #0;
[self.tableView reloadData];
}
-(void)searchBarTextDidBeginEditing:(UISearchBar *)searchBar
{
self.searchController.searchBar.text = #"";
}
#pragma mark Table
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection: (NSInteger)section
{
return [self.arrayWithContent count];
}
-(CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
return 120.0f;
}
- (PCRTweetFeedCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
PCRTweetFeedCell *cell = [tableView dequeueReusableCellWithIdentifier:#"PCRSavedTweetFeedCell"];
PCRTweet *tweetLocal = [[PCRTweet alloc] init];
if (cell == nil) {
cell = [[PCRTweetFeedCell alloc] initWithTweet:tweetLocal reuseIdentifier:#"PCRSavedTweetFeedCell"];
}
Tweet *tweetForIndex;
NSArray *arrayForCell = [[self.arrayWithContent reverseObjectEnumerator] allObjects];
NSArray *searchArrayForCell = [[self.searchResults reverseObjectEnumerator] allObjects];
if ([self.search isEqual:#0]){
tweetForIndex = [arrayForCell objectAtIndex:indexPath.row];
} else if ([self.search isEqual:#1]){
tweetForIndex = [searchArrayForCell objectAtIndex:indexPath.row];
}
NSString *date = [NSString stringWithFormat:#"%#", tweetForIndex.dateOfTweet];
TweetUser *tweetUser = tweetForIndex.whoPosted;
cell.t = tweetForIndex;
UIImage *imageOfTweetUser;
if (tweetUser.profilePicture) {
imageOfTweetUser = [UIImage imageWithData:tweetUser.profilePicture];
} else {
NSURL *urlWithProfilePicture = [NSURL URLWithString:tweetUser.profilePictureURL];
NSData *dataWithPic = [NSData dataWithContentsOfURL:urlWithProfilePicture];
imageOfTweetUser = [UIImage imageWithData:dataWithPic];
}
self.imageOfTweetUserGlobal = imageOfTweetUser;
cell.tweetMessage.text = tweetForIndex.messageOfTweet;
cell.tweetDate.text = date;
cell.tweetUserNameLabel.text = tweetForIndex.userNameOfTweetUser;
cell.profilePictureOfTwitterUserImageView.image = imageOfTweetUser;
cell.nameForPassing = [NSString stringWithFormat:#"%#'s Tweet", tweetUser.name];
return cell;
}
Well maybe this is your problem.
if ([self.search isEqual:#0]){
I think you are initially fetching the data but than once you init the searchController it starts looking for the searchResults.
The code you are looking is:
if ([self.search isActive]){
I found the solution. I changed
AppDelegate *del = [[AppDelegate alloc] init];
NSManagedObjectContext *context = del.managedObjectContext;
to
AppDelegate *del = [[UIApplication sharedApplication] delegate];
NSManagedObjectContext *context =[del managedObjectContext];
and it works perfectly.
How can I change this UITableViewController custom class to dynamically change the height of the Table View Cells? I have specified different font sizes for the iPad and iPhone size classes.
(This is a continuation of a previous discussion with #rdelmar)
#import "CREWFoodWaterList.h"
#interface CREWFoodWaterList ()
#end
#implementation CREWFoodWaterList
#define VIEW_NAME #"FoodWaterList" // add to database for this view and notes view
#define VIEW_DESCRIPTION #"Food Water - items to keep available" // to add to the database
#define RETURN_NC #"NCSuggestedContentsMenu" // where to return to when complete processing should be specified there
#define NOTES_TITLE #"Food and Water Notes" // pass to notes VC
#define THIS_NC #"NCFoodWaterList" // pass to next VC (so returns to the NC for this view)
- (IBAction)changedSwitch:(UISwitch *)sender {
if (sender.tag == 0) {
[self saveSwitch: #"switchWater" toValue:[NSNumber numberWithBool:sender.on]];
} else if (sender.tag == 1) {
[self saveSwitch: #"switchCanned" toValue:[NSNumber numberWithBool:sender.on]];
} else if (sender.tag == 2) {
[self saveSwitch: #"switchComfort" toValue:[NSNumber numberWithBool:sender.on]];
} else if (sender.tag == 3) {
[self saveSwitch: #"switchSpecial" toValue:[NSNumber numberWithBool:sender.on]];
}
} // end of changedSwitch
-(void)loadSavedSwitches {
// now set the switches to previously stored values
NSNumber *switchValue;
switchValue = [self getSwitch: #"switchWater"];
if ([switchValue intValue] == 0) {
self.switchWater.on = NO;
} else {
self.switchWater.on = YES;
}
self.textWater.text = [self getDescription:#"switchWater"];
switchValue = [self getSwitch: #"switchCanned"];
if ([switchValue intValue] == 0) {
self.switchCanned.on = NO;
} else {
self.switchCanned.on = YES;
}
self.textCanned.text = [self getDescription:#"switchCanned"];
switchValue = [self getSwitch: #"switchComfort"];
if ([switchValue intValue] == 0) {
self.switchComfort.on = NO;
} else {
self.switchComfort.on = YES;
}
self.textComfort.text = [self getDescription:#"switchComfort"];
// self.textComfort.textColor = [UIColor whiteColor];
switchValue = [self getSwitch: #"switchSpecial"];
if ([switchValue intValue] == 0) {
self.switchSpecial.on = NO;
} else {
self.switchSpecial.on = YES;
}
self.textSpecial.text = [self getDescription:#"switchSpecial"];
}
- (void) createNewSwitches {
// set create all switches and set to off
[self newSwitch: #"switchWater" toValue:#"At least three litres of bottle water per person per day"];
[self newSwitch: #"switchCanned" toValue:#"Canned foods, dried goods and staples"];
[self newSwitch: #"switchComfort" toValue:#"Comfort foods"];
[self newSwitch: #"switchSpecial" toValue:#"Food for infants, seniors and special diets"];
}
// COMMON Methods
- (void)viewDidLoad {
[super viewDidLoad];
self.tableView.rowHeight = UITableViewAutomaticDimension;
self.tableView.estimatedRowHeight = 50;
NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
// set font size for table headers
[[UIDevice currentDevice] model];
NSString *myModel = [[UIDevice currentDevice] model];
NSInteger nWords = 1;
NSRange wordRange = NSMakeRange(0, nWords);
NSArray *firstWord = [[myModel componentsSeparatedByString:#" "] subarrayWithRange:wordRange];
NSString *obj = [firstWord objectAtIndex:0];
if ([obj isEqualToString:#"iPad"]) {
[[UILabel appearanceWhenContainedIn:[UITableViewHeaderFooterView class], nil] setFont:[UIFont boldSystemFontOfSize:26]];}
else if ([obj isEqualToString:#"iPhone"]) {
[[UILabel appearanceWhenContainedIn:[UITableViewHeaderFooterView class], nil] setFont:[UIFont boldSystemFontOfSize:16]];
};
[defaults setObject:NOTES_TITLE forKey: #"VCtitle"]; // pass to notes VC
[defaults setObject:VIEW_NAME forKey: #"VCname"]; // pass to notes VC to use to store notes
[defaults setObject:THIS_NC forKey: #"CallingNC"]; // get previous CallingNC and save it for use to return to in doneAction
[self initializeView];
} // end of viewDidLoad
-(void)viewDidAppear:(BOOL)animated {
[super viewDidAppear:animated];
[self.tableView reloadData]; // this was necessary to have the cells size correctly when the table view first appeared
}
- (void) initializeView {
CREWAppDelegate *appDelegate = [[UIApplication sharedApplication]delegate];
NSManagedObjectContext *context = [appDelegate managedObjectContext];
NSEntityDescription *entityDesc = [NSEntityDescription entityForName:#"View" inManagedObjectContext:context];
NSFetchRequest * request = [[NSFetchRequest alloc] init];
[request setEntity:entityDesc];
NSPredicate *pred = [NSPredicate predicateWithFormat:#"(viewName = %#)", VIEW_NAME];
[request setPredicate:pred];
NSError *error = nil;
NSArray * objects = [context executeFetchRequest:request error:&error];
if ([objects count] == 0) { // create new view instance
NSManagedObject * newView;
newView = [NSEntityDescription insertNewObjectForEntityForName:#"View" inManagedObjectContext:context];
[newView setValue:VIEW_NAME forKey:#"viewName"];
[newView setValue:VIEW_DESCRIPTION forKey:#"viewDescription"];
// create all switches and set to off
[self createNewSwitches];
}
// load all switches
[self loadSavedSwitches];
} // end of initializeView
// create a new switch
- (void) newSwitch:(NSString*)switchName toValue:(NSString*)switchDescription {
NSError *error = nil;
CREWAppDelegate *appDelegate = [[UIApplication sharedApplication]delegate];
NSManagedObjectContext *context = [appDelegate managedObjectContext];
NSManagedObject * newSwitch;
newSwitch = [NSEntityDescription insertNewObjectForEntityForName:#"Switch" inManagedObjectContext:context];
[newSwitch setValue:VIEW_NAME forKey:#"viewName"];
[newSwitch setValue:switchName forKey:#"switchName"];
[newSwitch setValue:switchDescription forKey:#"switchDescription"];
[newSwitch setValue:[NSNumber numberWithInt:0] forKey:#"switchValue"];
if (! [context save:&error])
// NSLog(#"**** START entering %#",VIEW_NAME);
NSLog(#"newSwitch Couldn't save new data! Error:%#", [error description]);
} // end of newSwitch
// read existing switch settings
- (NSNumber *) getSwitch:(NSString*)switchName {
CREWAppDelegate *appDelegate = [[UIApplication sharedApplication]delegate];
NSManagedObjectContext *context = [appDelegate managedObjectContext];
NSEntityDescription *entityDesc = [NSEntityDescription entityForName:#"Switch" inManagedObjectContext:context];
NSFetchRequest * request = [[NSFetchRequest alloc] init];
[request setEntity:entityDesc];
NSPredicate *pred = [NSPredicate predicateWithFormat:#"(viewName = %#) AND (switchName = %#)", VIEW_NAME, switchName];
[request setPredicate:pred];
// Execute Fetch Request
NSManagedObjectContext * matches = nil;
NSError *fetchError = nil;
NSArray *objects = [appDelegate.managedObjectContext executeFetchRequest:request error:&fetchError];
if (fetchError) {
};
NSNumber *switchValue;
if (! [objects count] == 0) {
matches = objects [0];
switchValue = [matches valueForKey : #"switchValue"];
}
return switchValue;
} // end of getSwitch
- (NSString *) getDescription:(NSString*)switchName {
CREWAppDelegate *appDelegate = [[UIApplication sharedApplication]delegate];
NSManagedObjectContext *context = [appDelegate managedObjectContext];
NSEntityDescription *entityDesc = [NSEntityDescription entityForName:#"Switch" inManagedObjectContext:context];
NSFetchRequest * request = [[NSFetchRequest alloc] init];
[request setEntity:entityDesc];
NSPredicate *pred = [NSPredicate predicateWithFormat:#"(viewName = %#) AND (switchName = %#)", VIEW_NAME, switchName];
[request setPredicate:pred];
// Execute Fetch Request
NSManagedObjectContext * matches = nil;
NSError *fetchError = nil;
NSArray *objects = [appDelegate.managedObjectContext executeFetchRequest:request error:&fetchError];
if (fetchError) {
// NSLog(#"**** START entering %#",VIEW_NAME);(#"getSwitch Fetch error:%#", fetchError); // no
};
NSString *switchDescription;
if (! [objects count] == 0) {
matches = objects [0];
switchDescription = [matches valueForKey : #"switchDescription"];
}
return switchDescription;
} // end of getDescription
- (void)saveSwitch:(NSString*)switchName toValue:(NSNumber*)newSwitchValue {
CREWAppDelegate *appDelegate = [[UIApplication sharedApplication]delegate];
NSManagedObjectContext *context = [appDelegate managedObjectContext];
NSEntityDescription *entityDesc = [NSEntityDescription entityForName:#"Switch" inManagedObjectContext:context]; // get switch entity
NSFetchRequest * request = [[NSFetchRequest alloc] init];
[request setEntity:entityDesc];
NSPredicate *pred = [NSPredicate predicateWithFormat:#"(viewName = %#) AND (switchName = %#)", VIEW_NAME, switchName ];
[request setPredicate:pred];
NSManagedObject *matches = nil;
NSError *fetchError = nil;
NSArray * objects = [context executeFetchRequest:request error:&fetchError];
if (![objects count] == 0) {
matches = objects[0];
}
[matches setValue:newSwitchValue forKey:#"switchValue"];
if (! [context save:&fetchError])
// NSLog(#"**** START entering %#",VIEW_NAME);
NSLog(#"saveSwitch Couldn't save data! Error:%#", [fetchError description]); // perhaps this can be Done later
} // end of saveSwitch
// set alternate cells to different colors
- (UIColor *)getUIColorObjectFromHexString:(NSString *)hexStr alpha:(CGFloat)alpha
{
// Convert hex string to an integer
unsigned int hexint = [self intFromHexString:hexStr];
// Create color object, specifying alpha as well
UIColor *color =
[UIColor colorWithRed:((CGFloat) ((hexint & 0xFF0000) >> 16))/255
green:((CGFloat) ((hexint & 0xFF00) >> 8))/255
blue:((CGFloat) (hexint & 0xFF))/255
alpha:alpha];
return color;
}
// Helper method..
- (unsigned int)intFromHexString:(NSString *)hexStr
{
unsigned int hexInt = 0;
// Create scanner
NSScanner *scanner = [NSScanner scannerWithString:hexStr];
// Tell scanner to skip the # character
[scanner setCharactersToBeSkipped:[NSCharacterSet characterSetWithCharactersInString:#"#"]];
// Scan hex value
[scanner scanHexInt:&hexInt];
return hexInt;
}
- (void)tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath
{
NSString *grayishCyan = #"#a3c9ca";
NSString *grayishRed = #"#caa4a3";
UIColor *colorCyan = [self getUIColorObjectFromHexString:grayishCyan alpha:.9];
UIColor *colorPink = [self getUIColorObjectFromHexString:grayishRed alpha:.9];
// // NSLog(#"**** START entering %#",VIEW_NAME);(#"UIColor: %#", colorPink);
if (indexPath.row == 0 || indexPath.row%2 == 0) {
cell.backgroundColor = colorCyan;
}
else {
cell.backgroundColor = colorPink;
}
}
- (IBAction)doneAction:(id)sender {
// NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
UIViewController *viewController = [[UIStoryboard storyboardWithName:#"Main" bundle:nil] instantiateViewControllerWithIdentifier:RETURN_NC]; // previous Navigation controller
[self presentViewController:viewController animated:YES completion:nil];
};
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
}
#end
I have a working imagepicker that upon button click and hold gesture, allows the user to upload an image to the disk, and the user can change the image using the same gesture. The only issue is, however, I need this to be done twice on the same view (i.e. I have two imageviews, two buttons to change each of the imageviews, etc.), and I am stumped on how to get the second one to work. This is essentially what the view looks like:
Here is my current code:
- (void) imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
{
//
// Saving into Documents folder
//
NSString* path = [NSHomeDirectory() stringByAppendingString:#"/Documents/first.png"];
BOOL ok = [[NSFileManager defaultManager] createFileAtPath:path
contents:nil attributes:nil];
if (!ok) {
NSLog(#"Error creating file %#", path);
} else {
NSFileHandle* myFileHandle = [NSFileHandle fileHandleForWritingAtPath:path];
[myFileHandle writeData:UIImagePNGRepresentation(info [UIImagePickerControllerOriginalImage])];
[myFileHandle closeFile];
}
//
// Loading from documents
//
NSFileHandle* myFileHandle = [NSFileHandle fileHandleForReadingAtPath:path];
UIImage* loadedImage = [UIImage imageWithData:[myFileHandle readDataToEndOfFile]];
self.chosenImage = loadedImage;
[self.imageView setImage:self.chosenImage];
[self dismissViewControllerAnimated:YES completion:nil];
}
- (void) imagePickerControllerDidCancel:(UIImagePickerController *)picker
{
[self dismissViewControllerAnimated:YES completion:nil];
}
- (void)onLongTile:(UILongPressGestureRecognizer *)gesture
{
switch ([gesture state]) {
case UIGestureRecognizerStateBegan:{
NSString *actionSheetTitle = #"Photo Options"; //Action Sheet Title
NSString *type = #"Upload Photo";
NSString *cancelTitle = #"Cancel";
UIActionSheet *actionSheet = [[UIActionSheet alloc]
initWithTitle:actionSheetTitle
delegate:self
cancelButtonTitle:cancelTitle
destructiveButtonTitle:nil
otherButtonTitles:type, nil];
[actionSheet showInView:self.view]; }
}
}
- (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex {
NSString *buttonTitle = [actionSheet buttonTitleAtIndex:buttonIndex];
if ([buttonTitle isEqualToString:#"Photo"]) {
self.imagePicker = [[UIImagePickerController alloc] init];
self.imagePicker.delegate = self;
[self.imagePicker setSourceType:UIImagePickerControllerSourceTypePhotoLibrary];
[self presentViewController:self.imagePicker animated:YES completion:nil];
}
}
Updated code with tags:
- (void) imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
{
if (self.imageViewOne.tag == 100)
{
//
// Saving into Documents folder
//
NSString* path = [NSHomeDirectory() stringByAppendingString:#"/Documents/one.png"];
BOOL ok = [[NSFileManager defaultManager] createFileAtPath:path
contents:nil attributes:nil];
if (!ok) {
NSLog(#"Error creating file %#", path);
} else {
NSFileHandle* myFileHandle = [NSFileHandle fileHandleForWritingAtPath:path];
[myFileHandle writeData:UIImagePNGRepresentation(info [UIImagePickerControllerOriginalImage])];
[myFileHandle closeFile];
}
//
// Loading from documents
//
NSFileHandle* myFileHandle = [NSFileHandle fileHandleForReadingAtPath:path];
UIImage* loadedImage = [UIImage imageWithData:[myFileHandle readDataToEndOfFile]];
self.chosenImageOne = loadedImage;
[self.imageViewOne setImage:self.chosenImageOne];
[self dismissViewControllerAnimated:YES completion:nil];
}
if (self.imageViewTwo.tag == 200)
{
//
// Saving into Documents folder
//
NSString* path = [NSHomeDirectory() stringByAppendingString:#"/Documents/two.png"];
BOOL ok = [[NSFileManager defaultManager] createFileAtPath:path
contents:nil attributes:nil];
if (!ok) {
NSLog(#"Error creating file %#", path);
} else {
NSFileHandle* myFileHandle = [NSFileHandle fileHandleForWritingAtPath:path];
[myFileHandle writeData:UIImagePNGRepresentation(info [UIImagePickerControllerOriginalImage])];
[myFileHandle closeFile];
}
//
// Loading from documents
//
NSFileHandle* myFileHandle = [NSFileHandle fileHandleForReadingAtPath:path];
UIImage* loadedImage = [UIImage imageWithData:[myFileHandle readDataToEndOfFile]];
self.chosenImageTwo = loadedImage;
[self.imageViewTwo setImage:self.chosenImageTwo];
[self dismissViewControllerAnimated:YES completion:nil];
}
}
From what I understood of the question, set tags to your UIImageView and change is accordingly. something like:
[self.imageViewOne setTag:100];
[self.imageViewTne setTag:200];
And then in your delegates you can check the tag value and do the needful:
if ( imageView.tag == 100)
{
// Code for first imageView
}
I'm working on sampling the screen using AVCaptureScreenInput and outputting it using a AVCaptureVideoDataOutput, and it's not working. The images it does output are blank, but it appears like I'm doing everything right according to all the documentation I've read.
I've made sure I make the AVCaptureVideoDataOutput to something that could be read by a CGImage (kCVPixelFormatType_32BGRA). When I run this same code and have it output to a AVCaptureMovieFileOutput, the movie renders fine and everything looks good - but what I really want is a series of images.
#import "ScreenRecorder.h"
#import <QuartzCore/QuartzCore.h>
#interface ScreenRecorder() <AVCaptureFileOutputRecordingDelegate, AVCaptureVideoDataOutputSampleBufferDelegate> {
BOOL _isRecording;
#private
AVCaptureSession *_session;
AVCaptureOutput *_movieFileOutput;
AVCaptureStillImageOutput *_imageFileOutput;
NSUInteger _frameIndex;
NSTimer *_timer;
NSString *_outputDirectory;
}
#end
#implementation ScreenRecorder
- (BOOL)recordDisplayImages:(CGDirectDisplayID)displayId toURL:(NSURL *)fileURL windowBounds:(CGRect)windowBounds duration:(NSTimeInterval)duration {
if (_isRecording) {
return NO;
}
_frameIndex = 0;
// Create a capture session
_session = [[AVCaptureSession alloc] init];
// Set the session preset as you wish
_session.sessionPreset = AVCaptureSessionPresetHigh;
// Create a ScreenInput with the display and add it to the session
AVCaptureScreenInput *input = [[[AVCaptureScreenInput alloc] initWithDisplayID:displayId] autorelease];
if (!input) {
[_session release];
_session = nil;
return NO;
}
if ([_session canAddInput:input]) {
[_session addInput:input];
}
input.cropRect = windowBounds;
// Create a MovieFileOutput and add it to the session
_movieFileOutput = [[[AVCaptureVideoDataOutput alloc] init] autorelease];
[((AVCaptureVideoDataOutput *)_movieFileOutput) setVideoSettings:[NSDictionary dictionaryWithObjectsAndKeys:#(kCVPixelFormatType_32BGRA),kCVPixelBufferPixelFormatTypeKey, nil]];
// ((AVCaptureVideoDataOutput *)_movieFileOutput).alwaysDiscardsLateVideoFrames = YES;
if ([_session canAddOutput:_movieFileOutput])
[_session addOutput:_movieFileOutput];
// Start running the session
[_session startRunning];
// Delete any existing movie file first
if ([[NSFileManager defaultManager] fileExistsAtPath:[fileURL path]])
{
NSError *err;
if (![[NSFileManager defaultManager] removeItemAtPath:[fileURL path] error:&err])
{
NSLog(#"Error deleting existing movie %#",[err localizedDescription]);
}
}
_outputDirectory = [[fileURL path] retain];
[[NSFileManager defaultManager] createDirectoryAtPath:_outputDirectory withIntermediateDirectories:YES attributes:nil error:nil];
// Set the recording delegate to self
dispatch_queue_t queue = dispatch_queue_create("com.schaefer.lolz", 0);
[(AVCaptureVideoDataOutput *)_movieFileOutput setSampleBufferDelegate:self queue:queue];
//dispatch_release(queue);
if (0 != duration) {
_timer = [[NSTimer scheduledTimerWithTimeInterval:duration target:self selector:#selector(finishRecord:) userInfo:nil repeats:NO] retain];
}
_isRecording = YES;
return _isRecording;
}
- (void)dealloc
{
if (nil != _session) {
[_session stopRunning];
[_session release];
}
[_outputDirectory release];
_outputDirectory = nil;
[super dealloc];
}
- (void)stopRecording {
if (!_isRecording) {
return;
}
_isRecording = NO;
// Stop recording to the destination movie file
if ([_movieFileOutput isKindOfClass:[AVCaptureFileOutput class]]) {
[_movieFileOutput performSelector:#selector(stopRecording)];
}
[_session stopRunning];
[_session release];
_session = nil;
[_timer release];
_timer = nil;
}
-(void)finishRecord:(NSTimer *)timer
{
[self stopRecording];
}
//AVCaptureVideoDataOutputSampleBufferDelegate
- (void)captureOutput:(AVCaptureOutput *)captureOutput didOutputSampleBuffer:(CMSampleBufferRef)sampleBuffer fromConnection:(AVCaptureConnection *)connection {
CVImageBufferRef imageBuffer = CMSampleBufferGetImageBuffer(sampleBuffer);
CVPixelBufferLockBaseAddress(imageBuffer,0); // Lock the image buffer
uint8_t *baseAddress = (uint8_t *)CVPixelBufferGetBaseAddressOfPlane(imageBuffer, 0); // Get information of the image
size_t bytesPerRow = CVPixelBufferGetBytesPerRow(imageBuffer);
size_t width = CVPixelBufferGetWidth(imageBuffer);
size_t height = CVPixelBufferGetHeight(imageBuffer);
CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB();
CGContextRef newContext = CGBitmapContextCreate(baseAddress, width, height, 8, bytesPerRow, colorSpace, kCGBitmapByteOrder32Little | kCGImageAlphaPremultipliedFirst);
CGImageRef image = CGBitmapContextCreateImage(newContext);
CGContextRelease(newContext);
CGColorSpaceRelease(colorSpace);
_frameIndex++;
CVPixelBufferUnlockBaseAddress(imageBuffer,0);
dispatch_async(dispatch_get_main_queue(), ^{
NSURL *URL = [NSURL fileURLWithPath:[_outputDirectory stringByAppendingPathComponent:[NSString stringWithFormat:#"%d.jpg", (int)_frameIndex]]];
CGImageDestinationRef destination = CGImageDestinationCreateWithURL((CFURLRef)URL, kUTTypeJPEG, 1, NULL);
CGImageDestinationAddImage(destination, image, nil);
if (!CGImageDestinationFinalize(destination)) {
NSLog(#"Failed to write image to %#", URL);
}
CFRelease(destination);
CFRelease(image);
});
}
#end
Your data isn't planar, so there is no base address for plane 0--there's no plane 0. (To be sure, you can check with CVPixelBufferIsPlanar.) You'll need CVPixelBufferGetBaseAddress to get a pointer to the first pixel. All the data will be interleaved.