Display activity indicator only after clicking the button

Question

hi I’m trying view the activity indicator by clicking the button. I have tried but i having some issues. If i drag the activity indicator to my storyboard but its visible while running my app i want to display while clicking the button. in my app I’m giving the photo upload option. So if they click the upload button i want to view the activity indicator . ..

this is code i have tired but its not working.

this is my h file where i have implemented the activity indicator and the button..

- (IBAction)click:(id)sender;
 @property (strong, nonatomic) IBOutlet UIActivityIndicatorView *spinner;

this is code which i have used in my m file...

-(void)temp
{
 spinner = [[UIActivityIndicatorView alloc]initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhiteLarge];
 spinner.frame = CGRectMake(0.0, 0.0, 40.0, 40.0);
 [spinner setCenter:CGPointMake(480/2.0, 128.0/2)]; // (mid of screen) I do this because I'm in landscape mode
 [self.view addSubview:spinner];
 [spinner startAnimating];
 [spinner release];
}

and im calling this function in my button..

- (IBAction)click:(id)sender {
[self temp];
}

and also im have some other issues i saw the code here the problem is

[yourView addSubview:spinner];

in yourview i give my uiviewcontroller name but its giving error i have changed to

[self.view addSubview:spinner];

pls tell me where im doing wrong and what is the right way to make it.. thanks

nothing happens it remains same the activity indicator is not working @SuryakantSharma — kumar, Feb 20 '14 at 06:53
If you have the spinner connected to your view, why do you need to add it as a sub view? There's no point. Alternatively you can create a new one which is not connected to your view. — Idan Moshe, Feb 20 '14 at 06:54
yeah @IdanMoshe is right if you added activity indicator in your xib/storyboard than why you are creating again in "temp" method? — Suryakant Sharma, Feb 20 '14 at 06:56
ya ur right first i have tried with without connecting its not working so i have tried with this.. @IdanMoshe — kumar, Feb 20 '14 at 06:56
@user3247287 I assume you have your spinner connected to your view, please check my answer. — Idan Moshe, Feb 20 '14 at 07:10

score 1 · Accepted Answer · answered Feb 20 '14 at 07:07

1

Man I got the problem...I think you are adding white activity indicator on white view that's why it is not being display but it is there for sure so...use some other style UIActivityIndicatorViewStyleGray

-(void)temp
{
 spinner = [[UIActivityIndicatorView alloc]initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleGray];
 spinner.frame = CGRectMake(0.0, 0.0, 40.0, 40.0);
 [spinner setCenter:CGPointMake(480/2.0, 128.0/2)]; // (mid of screen) I do this because I'm in landscape mode
 [self.view addSubview:spinner];
 [spinner startAnimating];
 [spinner release];
}

answered Feb 20 '14 at 07:07

Suryakant Sharma

3,852
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@Suryankant Sharama its working thanks but i view to give the some time interview for the activity controller pls tell me how to make it – kumar Feb 20 '14 at 07:18
sorry I didn't get you. – Suryakant Sharma Feb 20 '14 at 07:20
1

use - (void)performSelector:(SEL)aSelector withObject:(id)anArgument afterDelay:(NSTimeInterval)delay; – Suryakant Sharma Feb 20 '14 at 07:22

score 0 · Answer 2 · edited Feb 20 '14 at 06:57

0

First of all since you already have an IBOutlet for the spinner so do not allocate a new one in temp method. Modify your temp method to look like this:

  -(void)temp
    {
      spinner.frame = CGRectMake(0.0, 0.0, 40.0, 40.0);
     [spinner setCenter:CGPointMake(480/2.0, 128.0/2)]; // (mid of screen) I do this because I'm in landscape mode
     [self.view addSubview:spinner];
     [spinner startAnimating];
    }

edited Feb 20 '14 at 06:57

Kumar KL

15,315
9
38
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answered Feb 20 '14 at 06:56

Ratikanta Patra

1,177
7
18

pls tell how to make without using the iboutlet – kumar Feb 20 '14 at 06:58
completely remove the spinner from the XIB and use your original temp method. it should work – Ratikanta Patra Feb 20 '14 at 07:00
after removing that its im getting error like use of undeclared identifier 'spinner' so pls tell me where i have to declare the spinner @Ratikanata Patra – kumar Feb 20 '14 at 07:03
instead of spinner use self.spinner – Ratikanta Patra Feb 20 '14 at 07:07
ya i have tried that one its give error like object spinner is not in the viewcontroller – kumar Feb 20 '14 at 07:10
have you removed this line :@property (strong, nonatomic) IBOutlet UIActivityIndicatorView *spinner;??? – Ratikanta Patra Feb 20 '14 at 07:11
s i have removed the that line @Ratikanata Patra – kumar Feb 20 '14 at 07:13
put it the line back. and remove IBOutlet i.e keep this line @property (strong, nonatomic)UIActivityIndicatorView *spinner; – Ratikanta Patra Feb 20 '14 at 07:14
thanks Ratikanta Patra ur help its working i have used the above code given by @Suryakant Sharma – kumar Feb 20 '14 at 07:20

score 0 · Answer 3 · edited May 23 '17 at 12:28

Assuming your spinner connected to your view. In your viewDidLoad you can setup your view, then it'll show when you tap the button:

- (void)viewDidLoad
{
    [super viewDidLoad];

    self.spinner = [[UIActivityIndicatorView alloc]initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhiteLarge];
    self.spinner.frame = CGRectMake(0.0, 0.0, 40.0, 40.0);
    [self.spinner setCenter:CGPointMake(480/2.0, 128.0/2)]; // (mid of screen) I do this because I'm in landscape mode
    self.spinner.hidden = YES;
}

- (IBAction)click:(id)sender
{
    self.spinner.hidden = NO;
    [self.spinner startAnimating];

     // Additionally you can show spinner in top bar
    [UIApplication sharedApplication].networkActivityIndicatorVisible = YES;
}

- (void)stopSpinner
{
    if (self.spinner.isAnimating) {
        self.spinner.hidden = YES;
        [self.spinner stopAnimating];

        // And hide it when you don't need it anymore
        [UIApplication sharedApplication].networkActivityIndicatorVisible = NO;
    }
}

I suggest you see this answer: How to get orientation-dependent height and width of the screen? to re position your spinner.

i have make it with out using IBOutlet activity indicator pls tell me how to make it i remove the IBOutlet it its showing error — kumar, Feb 20 '14 at 07:13
You can 'ctrl+drag your spinner to the correct outlet using storyboard. — Idan Moshe, Feb 20 '14 at 07:16

Krishna Kumar · Answer 4 · 2014-02-20T07:09:08.900

I f you are using interface builder like Storyboard or XIB then just set the frame and evrything there itself. And if you want to change the property of it at runtime just use the IBOutlet you have used. You need not to instantiate again just use its getter and setter to use it accordingly. So here you can do.

- (IBAction)click:(id)sender 
  {
    [self.spinner startAnimating];
  }

and synthesize spinner before using it.

And if you want to use it programmatically delete it from XIB and remove all references corresponding to it. And declare in .h file

UIActivityIndicatorView *spinner;

or you can make a property

@property(nonatomic, strong)UIActivityIndicatorView *spinner;

and just use your own code.

Display activity indicator only after clicking the button

4 Answers4