Passing data between views and load a string to Text View - ios

Question

I have a NSMutableArray in a view where I parse some JSON data to a Table View. Now, when I click on a cell I want to pass the value (text) of the selected cell array to a UITextView in another view.
The NSMutableArray where I store the data is called movies.
Here's my code for the first view:
#interface DEMOSecondViewController ()
#end
#implementation DEMOSecondViewController
#synthesize tableView = _tableView, activityIndicatorView = _activityIndicatorView;
#synthesize fontForCellText;
#synthesize btnFaceBook, btnTwitter, btnTwitter2;
#synthesize strURLToLoad;
#synthesize movies;
- (IBAction)showButtonMenu {
[self.frostedViewController presentMenuViewController];
}
- (void)refresh:(UIRefreshControl *)refreshControl {
[refreshControl endRefreshing];
}
-(UIStatusBarStyle)preferredStatusBarStyle{
return UIStatusBarStyleLightContent;
}
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
UIRefreshControl *refreshControl = [[UIRefreshControl alloc] init];
[refreshControl setTintColor:[UIColor greenColor]];
[refreshControl addTarget:self action:#selector(refresh:) forControlEvents:UIControlEventValueChanged];
[self.tableView addSubview:refreshControl];
strURLToLoad = [[NSMutableString alloc] init];
[btnFaceBook setTitle:#"link-1" forState:UIControlStateDisabled];
[btnTwitter setTitle:#"link-2" forState:UIControlStateDisabled];
[btnTwitter2 setTitle:#"link-3" forState:UIControlStateDisabled];
[btnFaceBook setBackgroundImage:[UIImage imageNamed:#"tab_selected.png"] forState:UIControlStateNormal];
[btnFaceBook setBackgroundImage:[UIImage imageNamed:#"tab_unselected.png"] forState:UIControlStateSelected];
[btnTwitter setBackgroundImage:[UIImage imageNamed:#"tab_selected.png"] forState:UIControlStateNormal];
[btnTwitter setBackgroundImage:[UIImage imageNamed:#"tab_unselected.png"] forState:UIControlStateSelected];
[btnTwitter2 setBackgroundImage:[UIImage imageNamed:#"tab_selected.png"] forState:UIControlStateNormal];
[btnTwitter2 setBackgroundImage:[UIImage imageNamed:#"tab_unselected.png"] forState:UIControlStateSelected];
NSArray *nib = [[NSBundle mainBundle] loadNibNamed:#"PostsObject" owner:self options:nil];
PostsObject *cell = [nib objectAtIndex:0];
fontForCellText = cell.title.font;
cellTextWidth = cell.title.frame.size.width;
cellHeightExceptText = cell.frame.size.height - cell.title.frame.size.height;
[self.navigationController setNavigationBarHidden:YES];
self.tableView.separatorColor = [UIColor clearColor];
self.activityIndicatorView = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhiteLarge];
self.activityIndicatorView.color = [UIColor greenColor];
self.activityIndicatorView.hidesWhenStopped = YES;
self.activityIndicatorView.center = self.view.center;
[self.view addSubview:self.activityIndicatorView];
[self.activityIndicatorView startAnimating];
self.tableView.separatorColor = [UIColor clearColor];
movies = [[NSMutableArray alloc] init];
[self btnFromTabBarClicked:btnFaceBook];
}
- (void)loadJSONFromCurrentURL
{
[self.activityIndicatorView startAnimating];
NSURLRequest *request = [[NSURLRequest alloc] initWithURL:[NSURL URLWithString:strURLToLoad]];
AFJSONRequestOperation *operation = [AFJSONRequestOperation JSONRequestOperationWithRequest:request success:^(NSURLRequest *request, NSHTTPURLResponse *response, id JSON) {
[movies setArray:JSON];
[self.activityIndicatorView stopAnimating];
[self.tableView reloadData];
} failure:^(NSURLRequest *request, NSHTTPURLResponse *response, NSError *error, id JSON) {
NSLog(#"Request Failed with Error: %#, %#", error, error.userInfo);
}];
[operation start];
}
- (IBAction)btnFromTabBarClicked:(UIButton *)sender
{
btnFaceBook.selected = btnTwitter.selected = btnTwitter2.selected = NO;
sender.selected = YES;
[strURLToLoad setString:[sender titleForState:UIControlStateDisabled]];
[self loadJSONFromCurrentURL];
}
// Table View Data Source Methods
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
return movies.count;
}
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
return 1;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
if(indexPath.row == 0) {
static NSString *Identifier1 = #"TableHeaderView";
TableHeaderView *cell = [tableView dequeueReusableCellWithIdentifier:Identifier1];
if (cell == nil) {
NSArray *nib= [[NSBundle mainBundle] loadNibNamed:#"TableHeaderView" owner:self options:nil];
cell = (TableHeaderView *)[nib objectAtIndex:0];
cell.selectionStyle = UITableViewCellSelectionStyleNone;
cell.backgroundColor = [UIColor clearColor];
return cell;
}
} else {
static NSString *Identifier2 = #"PostsObject";
PostsObject *cell = [tableView dequeueReusableCellWithIdentifier:Identifier2];
if (cell == nil) {
NSArray *nib= [[NSBundle mainBundle] loadNibNamed:#"PostsObject" owner:self options:nil];
cell = (PostsObject *)[nib objectAtIndex:0];
cell.backgroundColor = [UIColor clearColor];
}
NSDictionary *movie = [self.movies objectAtIndex:indexPath.row];
NSString *strText = [movie objectForKey:[self getTextKey]];
CGRect rect = cell.title.frame;
rect.size.height = [self getHeightForText:strText];
cell.title.frame = rect;
cell.title.text = strText;
cell.arrow.center = CGPointMake(cell.arrow.frame.origin.x, rect.origin.y + rect.size.height/2);
cell.published.text = [movie objectForKey:[self getPostedTime]];
cell.twitterName.text = [movie objectForKey:[self getTwitterName]];
return cell;
}
return 0;
}
//When I click on the cell, I want the selected cell-text to pass to another view
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
//How can I do this?
}
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
if(indexPath.row == 0) {
return 224;
} else {
NSDictionary *movie = [self.movies objectAtIndex:indexPath.row];
NSString *strText = [movie objectForKey:[self getTextKey]];
CGFloat cellHeight = cellHeightExceptText + [self getHeightForText:strText];
return cellHeight;
}
}
- (NSString *)getTextKey
{
return btnTwitter.selected?#"tweet":#"message";
}
- (NSString *)getPostedTime
{
return btnTwitter.selected?#"posted":#"published";
}
- (NSString *)getTwitterName
{
return btnTwitter2.selected?#"user":#"usernew";
}
- (CGFloat)getHeightForText:(NSString *)strText
{
CGSize constraintSize = CGSizeMake(cellTextWidth, MAXFLOAT);
CGSize labelSize = [strText sizeWithFont:fontForCellText constrainedToSize:constraintSize lineBreakMode:NSLineBreakByWordWrapping];
NSLog(#"labelSize.height = %f",labelSize.height);
return labelSize.height;
}
#end
And the code so far for the Second View looks like this:
#interface PostsNextView : UIViewController
#property (nonatomic, retain) NSDictionary *theMovie;
#property (nonatomic, retain) IBOutlet UITextView *textView;
#end
So how can I get the value from the first view to pass and display in the Text View in this file?

Answer 1

Add to didSelectRowAtIndexPath code:
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
//get the data you want to pass
NSDictionary *movie = [self.movies objectAtIndex:indexPath.row];
// Allocate second view you want to open
PostsNextView *newView = [[PostsNextView alloc] init];
// pass the data
newView.theMovie = movie;
// present view
[self.navigationController pushViewController:newView animated:YES];
}
And in PostsNextView.m file in viewDidLoad you can show the text you want to show.
//Extended
Add property to keep track which button was pressed:
#interface PostsNextView : UIViewController
#property (nonatomic, retain) NSDictionary *theMovie;
#property (nonatomic, retain) IBOutlet UITextView *textView;
#property int whichButton;
#end
in view did load add this line:
newView.theMovie = movie;
newView.whichButton = _witchBtn;
In your DEMOSecondViewController.m file add ivar:
#implementation DEMOSecondViewController
{
int _witchBtn;
}
And in the same file assign value to _witchBtn for example 0 as a default (all buttons disabled) if you change it to let's say Facebook assign _witchBtn = 1, if twitter _witchBtn = 2, etc.