ViewDidLoad to load 4 images - ios

I have tried this in my ViewDidLoad:
NSString *myGrabbedImage = #"myGrabbedImage.png";
NSString *myGrabbedImage2 = #"myGrabbedImage2.png";
NSString *myGrabbedImage3 = #"myGrabbedImage3.png";
NSString *myGrabbedImage4 = #"myGrabbedImage4.png";
NSArray *path = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSArray *path2 = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSArray *path3 = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSArray *path4 = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentDirectory = [path objectAtIndex:0];
NSString *documentDirectory2 = [path2 objectAtIndex:0];
NSString *documentDirectory3 = [path3 objectAtIndex:0];
NSString *documentDirectory4 = [path4 objectAtIndex:0];
NSString *fullPath = [documentDirectory stringByAppendingPathComponent:myGrabbedImage];
NSString *fullPath2 = [documentDirectory2 stringByAppendingPathComponent:myGrabbedImage2];
NSString *fullPath3 = [documentDirectory3 stringByAppendingPathComponent:myGrabbedImage3];
NSString *fullPath4 = [documentDirectory4 stringByAppendingPathComponent:myGrabbedImage3];
NSData *data = [NSData dataWithContentsOfFile:fullPath];
NSData *data2 = [NSData dataWithContentsOfFile:fullPath2];
NSData *data3 = [NSData dataWithContentsOfFile:fullPath3];
NSData *data4 = [NSData dataWithContentsOfFile:fullPath4];
if ([myGrabbedImage isEqualToString:#"myGrabbedImage.png"])
{
[[self firstImageView]setImage:[UIImage imageWithData:data]];
}
else if ([myGrabbedImage2 isEqualToString:#"myGrabbedImage2.png"])
{
[[self secondImageView]setImage:[UIImage imageWithData:data2]];
}
else if ([myGrabbedImage3 isEqualToString:#"myGrabbedImage3.png"])
{
[[self thirdImageView]setImage:[UIImage imageWithData:data3]];
}
else
{
[[self fourthImageView]setImage:[UIImage imageWithData:data4]];
}
Then I have this in my UIImagePickerController method:
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
{
UIImage *image1 = [info objectForKey:UIImagePickerControllerOriginalImage];
NSData *data = UIImagePNGRepresentation(image1);
NSString *myGrabbedImage = #"myGrabbedImage.png";
NSArray *path = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentDirectory = [path objectAtIndex:0];
NSString *fullPathToFile = [documentDirectory stringByAppendingPathComponent:myGrabbedImage];
[data writeToFile:fullPathToFile atomically:YES];
if (picker == imagePickerController)
{
[[self firstImageView]setImage:image1];
}
else if (picker == imagePickerController2)
{
[[self secondImageView]setImage:image1];
}
else if (picker == imagePickerController3)
{
[[self thirdImageView]setImage:image1];
}
else if (picker == imagePickerController4)
{
[[self fourthImageView]setImage:image1];
}
[self dismissViewControllerAnimated:YES completion:nil];
}
of coarse, the ViewDidLoad just shows one image. But how can I make it load all the 4 UIImageView´s.
Thanks in advance

#import <UIKit/UIKit.h>
#interface PickerController: UIViewController <UIPickerViewDelegate, UIPickerViewDataSource> {
NSArray *titleStrings;
UIPickerView *picker;
UIImage *imageView;
}
#end
#implementation PickerController
- (id) init {
if (self = [super init]) {
titleStrings = [[NSArray alloc] initWithObjects:#"A", #"B", NULL];
picker = [[UIPickerView alloc] initWithFrame:CGRectMake(0, 100, 320, 100)];
picker.showsSelectionIndicator = YES;
picker.delegate = self;
picker.dataSource = self;
[self.view addSubview:picker];
imageView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:#"empty.png"]];
imageView.frame = CGRectMake(0, 200, imageView.frame.size.width, imageView.frame.size.height);
[self.view addSubview:imageView];
[imageView release];
[picker release];
}
return self;
}
- (void) dealloc {
[titleStrings release];
[super dealloc];
}
/* UIPickerViewDataSource */
- (NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView {
return 2;
}
- (NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent: (NSInteger)component {
return 2;
}
/* UIPickerViewDelegate */
- (NSString *)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component {
return [titleStrings objectAtIndex:row];
}
- (void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:( NSInteger)component {
NSString *first = [titleStrings objectAtIndex:[pickerView selectedRowInComponent:0]];
NSString *second = [titleStrings objectAtIndex:[pickerView selectedRowInComponent:1]];
NSString *imageName = [[NSString alloc] initWithFormat:#"%#%#", first, second];
imageView.image = [UIImage imageNamed:imageName];
[imageName release];
[imageView sizeToFit];
}
#end

Related

Setting Image from gallery in iOS

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What should I do to remain same image on UIImageView after logout also?
I have used this code:
- (void)viewDidLoad {
NSString *myGrrabedImage1=#"myGrrabedImage1.png";
NSArray *path=NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentDirectory1=[path objectAtIndex:0];
NSString *fullPathToFile1=[documentDirectory1 stringByAppendingPathComponent:myGrrabedImage1];
NSData *data=[NSData dataWithContentsOfFile:fullPathToFile1];
[[self teacherImg]setImage:[UIImage imageWithData:data]];
[data writeToFile:fullPathToFile1 atomically:YES];
}
- (IBAction)selectImg:(id)sender {
pickerController = [[UIImagePickerController alloc]init];
pickerController.delegate = self;
[self.imagePicker setSourceType:UIImagePickerControllerSourceTypePhotoLibrary];
UIImage * img = [info valueForKey:UIImagePickerControllerEditedImage];
teacherImg.image = img;
[self presentViewController:pickerController animated:YES completion:nil];
}
- (void) imagePickerController:(UIImagePickerController *)picker
didFinishPickingImage:(UIImage *)image
editingInfo:(NSDictionary *)editingInfo
{
NSData *data=UIImagePNGRepresentation(teacherImg.image);
NSString *myGrrabedImage1=#"myGrrabedImage1.png";
NSArray *path=NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentDirectory1=[path objectAtIndex:0];
NSString *fullPathToFile=[documentDirectory1 stringByAppendingPathComponent:myGrrabedImage1];
[data writeToFile:fullPathToFile atomically:YES];
imagePicker.allowsEditing = YES;
imagePicker.delegate = self;
[[self teacherImg]setImage:image];
[self dismissViewControllerAnimated:YES completion:nil];
}
In viewDidLoad() method you need to load image from doc. dir.
NSString *myGrrabedImage1 = #"myGrrabedImage1.png";
NSArray *path = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentDirectory1 = [path objectAtIndex:0];
NSString *fullPathToFile = [documentDirectory1 stringByAppendingPathComponent:myGrrabedImage1];
Method 1:
NSData *imgData = [NSData dataWithContentsOfFile: fullPathToFile];
UIImage *thumbNail = [[UIImage alloc] initWithData:imgData];
Method 2:
UIIMage *image = [UIImage imageWithContentsOfFile: fullPathToFile];
[imgView setImage: image];
You should read the image data and set the ImageView image in the viewWillAppear method.
viewDidLoad is called only once, after the view has been loaded from the xib/storyboard
Try this way;
- (void)viewDidLoad {
NSString *myGrrabedImage1 = #"myGrrabedImage1.png";
NSArray *path =
NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentDirectory1 = [path objectAtIndex:0];
NSString *pathFile = [documentDirectory1 stringByAppendingPathComponent:myGrrabedImage1];
UIIMage *image = [UIImage imageWithContentsOfFile: pathFile];
[teacherImg setImage: image];
}
- (IBAction)selectImg:(id)sender {
pickerController = [[UIImagePickerController alloc]init];
pickerController.delegate = self;
[self.imagePicker setSourceType:UIImagePickerControllerSourceTypePhotoLibrary];
[self presentViewController:pickerController animated:YES completion:nil];
}
- (void) imagePickerController:(UIImagePickerController *)picker
didFinishPickingImage:(UIImage *)image
editingInfo:(NSDictionary *)editingInfo
{
UIImage * img = [info valueForKey:UIImagePickerControllerEditedImage];
teacherImg.image = img;
NSData *data=UIImagePNGRepresentation(teacherImg.image);
NSString *myGrrabedImage1=#"myGrrabedImage1.png";
NSArray *path=NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentDirectory1=[path objectAtIndex:0];
NSString *fullPathToFile=[documentDirectory1 stringByAppendingPathComponent:myGrrabedImage1];
[data writeToFile:fullPathToFile atomically:YES];
[[self teacherImg]setImage:image];
[self dismissViewControllerAnimated:YES completion:nil];
}

How to show and play captured photos and videos,Audios in ios [closed]

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Hi i am beginner in Ios and in my project i have given facility for users capturing photos and videos and Audios from camera and i am storing their "paths" in array lists and i am displays them in one table-list so for everything is ok
But here my main requirement is when i click table-list rows then if there is image file it must be shows or if there is video it must be play audio also have to play as like videos for this i have written some code here photos and videos are playing fine but audio files giving problem what did i do here wrong?
my code:-
#import "ViewController2.h"
#import <MobileCoreServices/UTCoreTypes.h>
#import <MediaPlayer/MediaPlayer.h>
#import <AVFoundation/AVFoundation.h>
#interface ViewController2 ()
{
NSMutableArray * arr_mediaType;
UIImagePickerController *imagePicker;
UIImage *snap;
NSData *data1;
NSMutableArray * arr_media;
MPMoviePlayerController * moviePlayer;
UIImageView *dot;
AVAudioRecorder * _audioRecorder;
AVAudioPlayer * player;
}
#end
#implementation ViewController2
#synthesize maintablelist;
- (void)viewDidLoad {
arr_mediaType = [[NSMutableArray alloc]init];
arr_media = [[NSMutableArray alloc]init];
maintablelist.delegate = self;
maintablelist.dataSource = self;
[super viewDidLoad];
}
- (IBAction)takePicture:(id)sender {
imagePicker = [[UIImagePickerController alloc] init];
imagePicker.delegate = self;
imagePicker.sourceType = UIImagePickerControllerSourceTypeSavedPhotosAlbum;
imagePicker.mediaTypes = [[NSArray alloc] initWithObjects:(NSString *)kUTTypeImage, nil];
[self presentViewController:imagePicker animated:NO completion:nil];
}
- (IBAction)takeVideo:(id)sender {
NSString *model = [[UIDevice currentDevice] model];
if ([model isEqualToString:#"iPhone Simulator"] || [model isEqualToString:#"iPad Simulator"])
{
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"Angry!!!" message:#"No Camera found!" delegate:nil cancelButtonTitle:#"Ok" otherButtonTitles:nil];
[alert show];
}
else
{
imagePicker = [[UIImagePickerController alloc] init];
imagePicker.delegate = self;
imagePicker.videoMaximumDuration = 10;
imagePicker.sourceType = UIImagePickerControllerSourceTypeCamera;
imagePicker.mediaTypes = [[NSArray alloc] initWithObjects:(NSString *)kUTTypeMovie, nil];
[self presentViewController:imagePicker animated:NO completion:nil];
}
}
- (IBAction)takeAudio:(id)sender {
NSArray *dirPaths;
NSString *docsDir;
dirPaths = NSSearchPathForDirectoriesInDomains(
NSDocumentDirectory, NSUserDomainMask, YES);
docsDir = dirPaths[0];
NSString *fileName = [[NSProcessInfo processInfo] globallyUniqueString]; // to get unique name
NSString *soundfile = [NSString stringWithFormat:#"sound%#.m4a",fileName];
NSString *soundFilePath = [docsDir
stringByAppendingPathComponent:soundfile];
NSURL *soundFileURL = [NSURL fileURLWithPath:soundFilePath];
NSLog(#"FilePath:%#",soundFileURL);
NSMutableDictionary *recordSetting = [[NSMutableDictionary alloc] init];
[recordSetting setValue:[NSNumber numberWithInt:kAudioFormatMPEG4AAC] forKey:AVFormatIDKey];
[recordSetting setValue:[NSNumber numberWithFloat:44100.0] forKey:AVSampleRateKey];
[recordSetting setValue:[NSNumber numberWithInt: 2] forKey:AVNumberOfChannelsKey];
NSError *error = nil;
AVAudioSession *audioSession = [AVAudioSession sharedInstance];
[audioSession setCategory:AVAudioSessionCategoryPlayAndRecord
error:nil];
_audioRecorder = [[AVAudioRecorder alloc]
initWithURL:soundFileURL
settings:recordSetting
error:&error];
if (error)
{
NSLog(#"error: %#", [error localizedDescription]);
}
else {
NSLog(#"ok");
[arr_media addObject:soundFilePath];
[_audioRecorder record];
[maintablelist reloadData];
}
}
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {
NSString *mediaType = [info objectForKey:UIImagePickerControllerMediaType];
if ([mediaType isEqualToString:#"public.image"]){
[mediaType isEqual: #"Photos"];
[arr_mediaType addObject:#"Photos"];
snap = (UIImage *) [info objectForKey:UIImagePickerControllerOriginalImage];
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *fileName = [[NSProcessInfo processInfo] globallyUniqueString];
NSString *filePath = [[paths objectAtIndex:0] stringByAppendingPathComponent:[NSString stringWithFormat:#"Pic-%#.png", fileName]];
NSData *data = UIImageJPEGRepresentation(snap, 1.0);
[data writeToFile:filePath atomically:YES];
[picker dismissViewControllerAnimated:YES completion:nil];
NSLog(#"So finally path is%#",filePath);
[arr_media addObject:filePath];
[maintablelist reloadData];
}
else {
[mediaType isEqual: #"Videos"];
[arr_mediaType addObject:#"Video"];
NSURL *videoURL = [info objectForKey:UIImagePickerControllerMediaURL];
NSLog(#"videoURL --->>> %#",videoURL);
NSData *videoData = [NSData dataWithContentsOfURL:videoURL];
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *fileName = [[NSProcessInfo processInfo] globallyUniqueString];
NSString *filePath = [[paths objectAtIndex:0] stringByAppendingPathComponent:[NSString stringWithFormat:#"video%#.mov", fileName]];
BOOL success = [videoData writeToFile:filePath atomically:NO];
[arr_media addObject:filePath];
NSLog(#"videoURLPath --->>> %#",filePath);
[picker dismissViewControllerAnimated:YES completion:nil];
[maintablelist reloadData];
}
}
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView{
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return arr_mediaType.count;
}
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
NSString *cells=#"cell";
UITableViewCell *cell=[tableView dequeueReusableCellWithIdentifier:nil];
if (cell==nil) {
cell=[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:cells];
}
cell.textLabel.text = [arr_media objectAtIndex:indexPath.row];
return cell;
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
if ([[arr_mediaType objectAtIndex:indexPath.row] isEqualToString:#"Photos"]) {
[moviePlayer.view removeFromSuperview];
dot =[[UIImageView alloc] initWithFrame:CGRectMake(40,320,240,128)];
dot.image = [UIImage imageNamed:[arr_media objectAtIndex:indexPath.row]];
[self.view addSubview:dot];
}
else if([[arr_mediaType objectAtIndex:indexPath.row] isEqualToString:#"Videos"])
{
[dot removeFromSuperview];
NSURL*theurl=[NSURL fileURLWithPath:[arr_media objectAtIndex:indexPath.row]];
moviePlayer=[[MPMoviePlayerController alloc] initWithContentURL:theurl];
[moviePlayer.view setFrame:CGRectMake(40, 320, 240, 128)];
[moviePlayer prepareToPlay];
[moviePlayer setShouldAutoplay:NO];
[self.view addSubview:moviePlayer.view];
}
else
{
NSString *filePath = [arr_media objectAtIndex:indexPath.row];
NSData *soundData = [NSData dataWithContentsOfURL:[NSURL fileURLWithPath:filePath]];
player = [[AVAudioPlayer alloc] initWithData:soundData error:nil];
[player setDelegate:self];
[player play];
}
}
#end
Here, I have modified your piece of code. First of all, there is no need of different arrays to store images and videos. You can access it from one. Simillarly, there is no need of storing media types in two different arrays. You can do it by one array.
Moreover, to save images and videos to document directory, you need to write those file to specific path. You will then be able to access them.
#import "ViewController.h"
#import <MobileCoreServices/UTCoreTypes.h>
#import <MediaPlayer/MediaPlayer.h>
#interface ViewController ()
{
NSMutableArray * arr_mediaType;
UIImagePickerController *imagePicker;
UIImage *snap;
NSData *data1;
NSMutableArray * arr_media;
MPMoviePlayerController * moviePlayer;
UIImageView *dot;
}
#end
#implementation ViewController
#synthesize tbl;
- (void)viewDidLoad {
arr_mediaType = [[NSMutableArray alloc]init];
arr_media = [[NSMutableArray alloc]init];
tbl.delegate = self;
tbl.dataSource = self;
[super viewDidLoad];
}
- (IBAction)takePicture:(id)sender {
imagePicker = [[UIImagePickerController alloc] init];
imagePicker.delegate = self;
imagePicker.sourceType = UIImagePickerControllerSourceTypeSavedPhotosAlbum;
imagePicker.mediaTypes = [[NSArray alloc] initWithObjects:(NSString *)kUTTypeImage, nil];
[self presentViewController:imagePicker animated:NO completion:nil];
}
- (IBAction)takeVideo:(id)sender {
NSString *model = [[UIDevice currentDevice] model];
if ([model isEqualToString:#"iPhone Simulator"] || [model isEqualToString:#"iPad Simulator"])
{
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"Angry!!!" message:#"No Camera found!" delegate:nil cancelButtonTitle:#"Ok" otherButtonTitles:nil];
[alert show];
}
else
{
imagePicker = [[UIImagePickerController alloc] init];
imagePicker.delegate = self;
imagePicker.videoMaximumDuration = 10;
imagePicker.sourceType = UIImagePickerControllerSourceTypeCamera;
imagePicker.mediaTypes = [[NSArray alloc] initWithObjects:(NSString *)kUTTypeMovie, nil];
[self presentViewController:imagePicker animated:NO completion:nil];
}
}
-(IBAction)takeAudio
{
NSArray *dirPaths;
NSString *docsDir;
dirPaths = NSSearchPathForDirectoriesInDomains(
NSDocumentDirectory, NSUserDomainMask, YES);
docsDir = dirPaths[0];
NSString *fileName = [[NSProcessInfo processInfo] globallyUniqueString]; // to get unique name
NSString *soundfile = [NSString stringWithFormat:#"sound%#.m4a",fileName];
NSString *soundFilePath = [docsDir
stringByAppendingPathComponent:soundfile];
NSURL *soundFileURL = [NSURL fileURLWithPath:soundFilePath];
NSLog(#"FilePath:%#",soundFileURL);
NSMutableDictionary *recordSetting = [[NSMutableDictionary alloc] init];
[recordSetting setValue:[NSNumber numberWithInt:kAudioFormatMPEG4AAC] forKey:AVFormatIDKey];
[recordSetting setValue:[NSNumber numberWithFloat:44100.0] forKey:AVSampleRateKey];
[recordSetting setValue:[NSNumber numberWithInt: 2] forKey:AVNumberOfChannelsKey];
NSError *error = nil;
AVAudioSession *audioSession = [AVAudioSession sharedInstance];
[audioSession setCategory:AVAudioSessionCategoryPlayAndRecord
error:nil];
_audioRecorder = [[AVAudioRecorder alloc]
initWithURL:soundFileURL
settings:recordSettings
error:&error];
if (error)
{
NSLog(#"error: %#", [error localizedDescription]);
} else {
[arr_media addObject:soundFilePath];
[_audioRecorder record];
}
}
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {
NSString *mediaType = [info objectForKey:UIImagePickerControllerMediaType];
if ([mediaType isEqualToString:#"public.image"]){
[mediaType isEqual: #"Photos"];
[arr_mediaType addObject:#"Photos"];
snap = (UIImage *) [info objectForKey:UIImagePickerControllerOriginalImage];
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *fileName = [[NSProcessInfo processInfo] globallyUniqueString];
NSString *filePath = [[paths objectAtIndex:0] stringByAppendingPathComponent:[NSString stringWithFormat:#"Pic-%#.png", fileName]];
NSData *data = UIImageJPEGRepresentation(snap, 1.0);
[data writeToFile:filePath atomically:YES];
[picker dismissViewControllerAnimated:YES completion:nil];
//UIImage *image = [[UIImage alloc] initWithContentsOfFile:filePath];
// NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
//
// NSString *Dir = [paths objectAtIndex:0];
// NSString *fileName = [NSString stringWithFormat:#"Pic-%lf.png", [[NSDate date] timeIntervalSince1970]];
//
// //this path if you want save reference path in sqlite
// NSString *pngPath = [NSString stringWithFormat:#"%#/%#",Dir,fileName];
//
NSLog(#"So finally path is%#",filePath);
[arr_media addObject:filePath];
[tbl reloadData];
}
else {
[mediaType isEqual: #"Videos"];
[arr_mediaType addObject:#"Video"];
NSURL *videoURL = [info objectForKey:UIImagePickerControllerMediaURL];
NSLog(#"videoURL --->>> %#",videoURL);
NSData *videoData = [NSData dataWithContentsOfURL:videoURL];
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *fileName = [[NSProcessInfo processInfo] globallyUniqueString];
NSString *filePath = [[paths objectAtIndex:0] stringByAppendingPathComponent:[NSString stringWithFormat:#"video%#.mov", fileName]];
BOOL success = [videoData writeToFile:filePath atomically:NO];
[arr_media addObject:filePath];
NSLog(#"videoURLPath --->>> %#",filePath);
[picker dismissViewControllerAnimated:YES completion:nil];
[tbl reloadData];
}
}
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView{
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return arr_mediaType.count;
}
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
NSString *cells=#"cell";
UITableViewCell *cell=[tableView dequeueReusableCellWithIdentifier:nil];
if (cell==nil) {
cell=[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:cells];
}
cell.textLabel.text = [arr_media objectAtIndex:indexPath.row];
return cell;
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
if ([[arr_mediaType objectAtIndex:indexPath.row] isEqualToString:#"Photos"]) {
[moviePlayer.view removeFromSuperview];
dot =[[UIImageView alloc] initWithFrame:CGRectMake(40,320,240,128)];
dot.image = [UIImage imageNamed:[arr_media objectAtIndex:indexPath.row]];
[self.view addSubview:dot];
}
else if([[arr_mediaType objectAtIndex:indexPath.row] isEqualToString:#"Videos"])
{
[dot removeFromSuperview];
// NSString*thePath=[[NSBundle mainBundle] pathForResource:[arr_media objectAtIndex:indexPath.row] ofType:#"MOV"];
NSURL*theurl=[NSURL fileURLWithPath:[arr_media objectAtIndex:indexPath.row]];
moviePlayer=[[MPMoviePlayerController alloc] initWithContentURL:theurl];
[moviePlayer.view setFrame:CGRectMake(40, 320, 240, 128)];
[moviePlayer prepareToPlay];
[moviePlayer setShouldAutoplay:NO];
[self.view addSubview:moviePlayer.view];
}
else
{
NSString *filePath = [arr_media objectAtIndex:indexPath.row];
NSData *soundData = [NSData dataWithContentsOfURL:[NSURL fileURLWithPath:filePath]];
player = [[AVAudioPlayer alloc] initWithData:soundData error:nil];
[player setDelegate:self];
[player play];
}
#end
Your issue is that you are not saving the captured images/photos and simply trying to use the paths. Please take a look at Apple Documentation on how to use it. You can save them in your project's Documents directory, save the file name and path as you are doing then use those paths for rendering/playing later on.
As a side note, in your implementation, there are few lines of code that you are executing after [picker dismissViewControllerAnimated:YES completion:nil]. I would advise to utilize completion block here and load your table view once image picker view dismissal is complete. This avoid run time crashes.
EDIT: On OP request
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
{
NSString *mediaType = [info objectForKey:UIImagePickerControllerMediaType];
if ([mediaType isEqualToString:(NSString *)kUTTypeImage])
{
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *filePath = [NSString stringWithFormat:#"%#/%#", documentsDirectory, #“image1.png”];
UIImage *image = [info objectForKey:UIImagePickerControllerOriginalImage];
NSData *imageData = UIImageJPEGRepresentation(image, 1);
[imageData writeToFile: filePath atomically:YES];
[picker dismissViewControllerAnimated:YES completion:^{
// Save your model data and reload table here
}];
}
}

How to load images from documents directory into image view in Objective-C

NSString *path = [NSString stringWithFormat:#"%#/%#",[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask, YES) objectAtIndex:0], parentFolderName] ;
NSArray *dirContents = [[NSFileManager defaultManager] contentsOfDirectoryAtPath:path error:nil];
NSEnumerator *enumerator = [dirContents objectEnumerator] ;
id fileName ;
NSMutableArray *fileArray = [[NSMutableArray alloc] init] ;
while (fileName = [enumerator nextObject])
{
NSString *fullFilePath = [path stringByAppendingPathComponent:fileName];
NSRange textRangeJpg = [[fileName lowercaseString] rangeOfString:[#".png" lowercaseString]];
if (textRangeJpg.location != NSNotFound)
{
originalImage = [UIImage imageWithContentsOfFile:fullFilePath];
[fileArray addObject:originalImage];
}
}
You should try this code to save and retrieve image from the document directory:
I have implemented these methods in AppDelegate.m
-(NSString *)getDocumentDirectoryPath:(NSString *)Name
{
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *savedImagePath = [documentsDirectory stringByAppendingPathComponent:Name];
NSLog(#"savedImagePath: %#", savedImagePath);
return savedImagePath;
}
-(BOOL)saveImage:(UIImage *)image withName:(NSString *)Name
{
NSData *imageData = UIImagePNGRepresentation(image);
BOOL success = [imageData writeToFile:[AppDelegate getDocumentDirectoryPath:Name] atomically:NO];
return success;
}
-(UIImage *)getRealtorImage:(NSString *)Name
{
UIImage *img = [UIImage imageWithContentsOfFile:[AppDelegate getDocumentDirectoryPath:Name]];
return img;
}
#Sandy Please try the following code
UIImageView *imageView = [[UIImageView alloc] initWithFrame:CGRectMake(100,100,200,200)];
NSData *imgData = [[NSData alloc] initWithContentsOfURL:[NSURL fileURLWithPath:imageFilePath]];
if (imgData != nil)
{
UIImage *thumbNail = [[UIImage alloc] initWithData:imgData];
imageView.image = thumbNail;
}
[self.view addSubView:imageView];

iOS table view lag issue, i'm using dispatch and save cache

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
TableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:#"TableViewCell" forIndexPath:indexPath];
cell.tag = indexPath.row;
//cell.imageView.image = nil;
// Rounded Rect for cell image
CALayer *cellImageLayer = cell.imageView.layer;
[cellImageLayer setCornerRadius:25];
[cellImageLayer setMasksToBounds:YES];
[self getImages];
[self storeImages];
UIImage *image =_ResimSonHali[indexPath.row];
dispatch_queue_t queue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_HIGH, 0);
dispatch_async(queue, ^(void) {
if (image) {
dispatch_async(dispatch_get_main_queue(), ^{
if (cell.tag == indexPath.row) {
CGSize itemSize = CGSizeMake(50, 50);
UIGraphicsBeginImageContext(itemSize);
CGRect imageRect = CGRectMake(0.0, 0.0, itemSize.width, itemSize.height);
[image drawInRect:imageRect];
// cell.ThumbImage.image = image1;
cell.imageView.image = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
[cell setNeedsLayout];
}
});
}
});
cell.TitleLabel.text = _TarifAdi[indexPath.row];
return cell;
}
-(void)getImages
{
NSMutableArray *fuckingArrayYemek = [[NSMutableArray alloc] init];
for (int i=0; i<[_ResimAdiBase count]; i++)
{
NSString *testString=_ResimAdiBase[i];
NSArray *ImageNames = [testString componentsSeparatedByString:#"."];
[self cacheImage: _ResimAdi[i] : ImageNames[0] ];
[fuckingArrayYemek addObject:ImageNames[0]];
}
_ResimSonAdi = fuckingArrayYemek;
}
-(void) storeImages
{
NSMutableArray *fuckingArrayYemekName = [[NSMutableArray alloc] init];
for (int i=0; i<[_ResimAdiBase count]; i++)
{
[fuckingArrayYemekName addObject:[self getCachedImage:_ResimSonAdi[i]]];
}
_ResimSonHali = fuckingArrayYemekName;
}
- (void) cacheImage: (NSString *) ImageURLString : (NSString *)imageName
{
NSURL *ImageURL = [NSURL URLWithString: ImageURLString];
// Generate a unique path to a resource representing the image you want
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *docDir = [paths objectAtIndex: 0];
NSString *docFile = [docDir stringByAppendingPathComponent: imageName];
// Check for file existence
if(![[NSFileManager defaultManager] fileExistsAtPath: docFile])
{
// The file doesn't exist, we should get a copy of it
// Fetch image
NSData *data = [[NSData alloc] initWithContentsOfURL: ImageURL];
UIImage *image = [[UIImage alloc] initWithData: data];
// Is it PNG or JPG/JPEG?
// Running the image representation function writes the data from the image to a file
if([ImageURLString rangeOfString: #".png" options: NSCaseInsensitiveSearch].location != NSNotFound)
{
[UIImagePNGRepresentation(image) writeToFile: docFile atomically: YES];
}
else if([ImageURLString rangeOfString: #".jpg" options: NSCaseInsensitiveSearch].location != NSNotFound ||
[ImageURLString rangeOfString: #".jpeg" options: NSCaseInsensitiveSearch].location != NSNotFound)
{
[UIImageJPEGRepresentation(image, 100) writeToFile: docFile atomically: YES];
}
}
}
- (UIImage *) getCachedImage : (NSString *)imageName
{
NSArray *paths = NSSearchPathForDirectoriesInDomains
(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString* cachedPath = [documentsDirectory stringByAppendingPathComponent:imageName];
UIImage *image;
// Check for a cached version
if([[NSFileManager defaultManager] fileExistsAtPath: cachedPath])
{
image = [UIImage imageWithContentsOfFile: cachedPath]; // this is the cached image
}
else
{
NSLog(#"Error getting image %#", imageName);
}
return image;
}
When i load 20 data, our table do not lagging but when our try to increase data size table view getting lag how we can prove this problem. First we tried dispatch then we tried save images cache still we got lag. Approximately, we deal with this problem about 3 days.
This is the problem line inside cacheImage() method, which is called with every call of "cellForRowAtIndexPath" method
NSData *data = [[NSData alloc] initWithContentsOfURL: ImageURL];
So to resolve the problem use this line under dispatch_async section. And update your code according to it.

Error when recalling directory to Collection View

I am using this code to recall the directory that I have made for each genre. However I get errors saying at the images part at the [arrayCollectionImages addObject:image]; Can you explain what is wrong with the last piece of code. I also have an warning at arrayCollectionImages saying local declaration of arrayColectionImages hide instance variable. It is also telling me that the [[cell collectionImageView]setImage:[UIImage imageNamed:[arrayCollectionImages objectAtindex:indexPath.item]]]; No visible #interface for "NSArray" declares the selector "objectAtindex:;" What did I have done wrong?
#import "CollectionViewController.h"
#import "CollectionCell.h"
#interface CollectionViewController (){
NSArray *arrayCollectionImages;
}
#end
#implementation CollectionViewController
- (void)viewDidLoad {
NSArray *allImagesArray = [[NSArray alloc ]init];
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *location=#"Genre1";
NSString *fPath = [documentsDirectory stringByAppendingPathComponent:location];
NSArray *directoryContent = [[NSFileManager defaultManager] directoryContentsAtPath: fPath];
for(NSString *str in directoryContent){
NSString *finalFilePath = [fPath stringByAppendingPathComponent:str];
NSData *data = [NSData dataWithContentsOfFile:finalFilePath];
if(data)
{
UIImage *image = [UIImage imageWithData:data];
[allImagesArray addObject:image];
}
}
[super viewDidLoad];
}
-(UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath
{
CollectionCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:#"ReuseID" forIndexPath:indexPath];
[[cell collectionImageView]setImage:[UIImage imageNamed:[arrayCollectionImages objectAtIndex:indexPath.item]]];
return cell;
}
-(NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section{
return [arrayCollectionImages count];
}
#end
This is my code for saving to directory
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
FrontCamera = NO;
cameraSwitch.selectedSegmentIndex = 1;
captureImage.hidden = YES;
[pickerViewContainer addSubview:SaveTopicker];
arraygenre = [[NSMutableArray alloc] init];
[arraygenre addObject:#"Tops"];
[arraygenre addObject:#"Pants"];
[arraygenre addObject:#"Coats"];
[arraygenre addObject:#"Shoes"];
[arraygenre addObject:#"Hats"];
[arraygenre addObject:#"Others"];
pickerViewContainer.frame = CGRectMake(0, 800, 320, 261);
}
- (void)viewDidAppear:(BOOL)animated {
[self initializeCamera];
}
- (void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component{
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
//fetch Category Name from the array used to fill the Picker View
NSString *categoryName= [arraygenre objectAtIndex:row];
NSString *fPath = [documentsDirectory stringByAppendingPathComponent:categoryName];
NSFileManager *fileManager=[[NSFileManager alloc]init];
[fileManager createDirectoryAtPath:fPath withIntermediateDirectories:YES attributes:nil error:nil];
UIImage *image = captureImage.image;
NSData *data = UIImagePNGRepresentation(image);
[data writeToFile:fPath atomically:YES];
}
The method name is objectAtIndex:. You have the "i" in the method name in lower case which is incorrect.

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