I have a view in Which I have added a UIScrollview. In UIScrollView I added an UIImageView. After Picking Image from ImagePicker I am adding image to UIImageView.
Problem : I am showing UIActivityIndicatorView before adding image to ImageView.
Case 1: When I add activity Indicator to self.view It is showing behind the UIScrollView means not showing at all.
Case 2: If I add Indicator to Scrollview it is not adding in view.
I tried many thing bringSubviewToFront , insertSubview:indicator aboveSubview:myscrollview
Here is my CODE :
scroller = [[UIScrollView alloc]initWithFrame:CGRectMake(0, 60, Screen_width, Screen_height - 60)];
scroller.delegate = self;
[self.view addSubview:scroller];
scroller.contentSize = CGSizeMake(Screen_width, 667);
profileImageView = [[UIImageView alloc]initWithFrame:CGRectMake(20, 10, Screen_width-40, Screen_width-40)];
profileImageView.backgroundColor = gray;
profileImageView.contentMode = UIViewContentModeScaleAspectFill;
profileImageView.clipsToBounds = YES;
profileImageView.userInteractionEnabled=YES;
-(void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary<NSString *,id> *)info{
_profileIndicator = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhiteLarge];
_profileIndicator.frame = CGRectMake(40.0, 20.0, 60.0, 60.0);
_profileIndicator.center = self.view.center;
[self.view addSubview:_profileIndicator];
[_profileIndicator startAnimating];
}
All the UI things should be in main thread. So, please make sure you are using UIActivityIndicator in main thread.
Related
I create a UIImageView and add to VC UIView , then I create a image with animatedImageWithImages:duration:
When I execute the code, it works normally. It displays image animation. But when I push to next VC and in the process of swipe back , I find the UIImageView display nothing.
At the moment finger left screen , everything back to normal.
Here is my code:
- (void)viewDidLoad {
[super viewDidLoad];
UIImageView *imgView = [[UIImageView alloc] init];
imgView.backgroundColor = [UIColor orangeColor];
imgView.frame = CGRectMake(20, 200, 80, 80);
[self.view addSubview:imgView];
NSArray *imgs = #[[UIImage imageNamed:#"img1"],[UIImage imageNamed:#"img2"]];
imgView.image = [UIImage animatedImageWithImages:imgs duration:0.5];
}
BugGif
I notice the imageView has CAKeyframeAnimation. I guess the conflict that runmode and CAKeyframeAnimation.
SDWebImage has the same problem. Because it also use the method that create UIImage. I think the point is the method of animatedImageWithImages:duration: and CAKeyframeAnimation.
Anyone knows the solution? Thanks a lot.
The event that the finger left the screen will make imageView display normally. Why and How to resolve?
GitHubBugDemo
You can use UIImageView another methods to set images and animation duration as below
UIImageView *imgView = [[UIImageView alloc] init];
imgView.backgroundColor = [UIColor orangeColor];
imgView.frame = CGRectMake(20, 200, 80, 80);
NSArray *imgs = #[[UIImage imageNamed:#"img1"],[UIImage imageNamed:#"img2"]];
[imgView setAnimationImages:imgs];
[imgView setAnimationDuration:1];
[imgView setAnimationRepeatCount:HUGE_VAL];
[imgView startAnimating];
[self.view addSubview:imgView];
I have these two views that i would like to align to be centered.
self.loadingView = [[UIView alloc] initWithFrame:CGRectMake(75, 155, 120, 120)];
self.loadingView.backgroundColor = [UIColor colorWithRed:0 green:0 blue:0 alpha:0.5];
self.loadingView.clipsToBounds = YES;
self.loadingView.layer.cornerRadius = 10.0;
self.activityView = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhite];
self.activityView.frame = CGRectMake(65, 40, self.activityView.bounds.size.width, self.activityView.bounds.size.height);
[self.loadingView addSubview:self.activityView];
loadingView needs to be aligned center to the iPhones screen. This means a code that can support different sizes of screens. And then activityView should be aligned centered inside the loadingView.
I have tried some code examples but none worked. And it was really confusing. If someone could provide some code exampels and explaing a bit how it works to get a hang of this.
EDIT1
I wrote just as you did i added the self.view.center part but it is still not in the middle?
Also the second question was how to add the indicator view in the CENTER of the loadingView.
- (void)viewDidLoad {
[super viewDidLoad];
self.view.backgroundColor= [UIColor blackColor];
UIActivityIndicatorView * indicator;
indicator = [[UIActivityIndicatorView alloc] init];
indicator.center = self.view.center;
indicator.activityIndicatorViewStyle = UIActivityIndicatorViewStyleWhiteLarge;
[indicator startAnimating];
[self.view addSubview:indicator];
// Do any additional setup after loading the view, typically from a nib.
}
this will add the activity indicator in the center of the screen..
How to set the image in Background image(means how to paste the image in Background image). I took one image as a background image in UIViewController. Right now i want to put the another image in background image.i know how to put the image as a Background image in UIViewController.But i have no idea how to put the image in background image.I tried the code.But the image will not displayed in background image.This is my code.please help me any body.Thanks in advance.
-(void)viewDidLoad
{
backgroundImage=[UIImage imageNamed:#"bg-small.PNG"];
audioViewBackgroundImage=[[UIImageView alloc]initWithImage:backgroundImage];
[self.view addSubview:audioViewBackgroundImage];
mImage=[UIImage imageNamed:#"muluguphoto.png"];
mBackgroundImage=[[UIImageView alloc]initWithFrame:CGRectMake(20, 160, 150, 90)];
mBackgroundImage=[[UIImageView alloc]initWithImage:mImage];
[audioViewBackgroundImage addSubview:mBackgroundImage];
}
add it to your viewDidLoad..
UIImageView *newImage=[[UIImageView alloc]initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height)];
[newImage setBackgroundColor:[UIColor redColor]];//here else you can add image
[self.view addSubview:newImage];
UITableView *newTable=[[UITableView alloc]initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height)];
[newTable setBackgroundColor:[UIColor clearColor]];
[self.view addSubview:newTable];
you have to set imageview above imageview in userinterface.like in photo.make proper heirARCHY!and set frame of imageview INDependentaly as you want.here is background image with logo image..
Add this line to viewDidLoad
self.view.backgroundColor=[UIColor colorWithPatternImage:[UIImage imageNamed:#"background.png"]];
Why do you initializing mBackgroundImage two times?
Let's try the below code and let me know the result.
UIImageView * audioViewBackgroundImage=[[UIImageView alloc] initWithFrame:self.view.frame];
audioViewBackgroundImage.image = [UIImage imageNamed:#"bg-small.PNG"];
[self.view addSubview:audioViewBackgroundImage];
UIImageView * mBackgroundImage =[[UIImageView alloc]initWithFrame:CGRectMake(20, 160, 150, 90)];
mBackgroundImage.image = [UIImage imageNamed:#"muluguphoto.png"];
[audioViewBackgroundImage addSubview:mBackgroundImage];
Thanks!
UIImageView * bgImage =[[UIImageView alloc]initWithFrame:self.view.frame];
bgImage.image = [UIImage imageNamed:#"myimg.png"];
[self.view addSubview:bgImage];
[self.view sendSubviewToBack:bgImage];
//write this line in viewdidload and make sure that you have import the image in your project by copying it .
when you write this line of code then this image will automatically replace the previous background image
self.view.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageNamed:#"stack.jpeg"]];
I am displaying two images on single view where both images must have zoom functionality.My page height is around 1000 pixels and images must be display on top and bottom of page. For that I have added two different scroll view and added image views on scroll views.
Now Zoom is working properly for second image .But first image is getting displayed in top left corner of scroll view once zoomed out. It seems there are two images.
Here is the delegate method i am using:
- (UIView *)viewForZoomingInScrollView:(UIScrollView *)scrollView{
return [[scrollView subviews] objectAtIndex:0];
}
Is there anything i am missing ? or is this not really possible to enable zoom when there are two scroll views for single page.
Here is the code its working for enable zoom when there are two scroll views for single page.
//Create First ImageView
image1 =[[UIImageView alloc]initWithFrame:CGRectMake(0, 0, 320, 220)];
image1.image = [UIImage imageNamed:#"image1.png"];
image1.contentMode = UIViewContentModeScaleToFill;
//Create and Set Values for Scrollview 1
scroll1 =[[UIScrollView alloc] initWithFrame:CGRectMake(0, 0, 320, 220)];
scroll1.contentSize = image1.frame.size;
[scroll1 setMinimumZoomScale:1.0];
[scroll1 setMaximumZoomScale:4.0];
scroll1.delegate = self;
scroll1.clipsToBounds = YES;
scroll1.tag =0;
[scroll1 addSubview:image1];
image1.userInteractionEnabled =YES;
scroll1.zoomScale = 1;
[self.view addSubview:scroll1];
Second Scrollview and ImageView
// Create Second ImageView
image2 =[[UIImageView alloc]initWithFrame:CGRectMake(0, 0, 320, 260)];
image2.image = [UIImage imageNamed:#"image2.png"];
image2.contentMode = UIViewContentModeScaleToFill;
// Create Second ScrollView
scroll2 =[[UIScrollView alloc] initWithFrame:CGRectMake(0, 220, 320, 260)];
scroll2.contentSize = image2.frame.size;
[scroll2 setMinimumZoomScale:1.0];
[scroll2 setMaximumZoomScale:4.0];
scroll2.delegate = self;
scroll2.clipsToBounds = YES;
scroll2.tag =1;
[scroll2 addSubview:image2];
image2.userInteractionEnabled =YES;
scroll2.zoomScale = 1;
[self.view addSubview:scroll2];
This will help you, since it is already working for me.
Delegate method as follow:
- (UIView *)viewForZoomingInScrollView:(UIScrollView *)scrollView{
if (scrollView.tag ==0) {
return image1;
}
else return image2;
}
I have a subview in my app that contains a UIImageView. The user can touch this subview and move it around. I have some UILabels that I want to "stick" or group with the subview so that they move along with it. I wonder how to do that?
Here is where I add the Labels to the subview:
- (void)viewDidLoad
{
[super viewDidLoad];
//Decrease the site of root CALayer of the view and give it round corners
self.view.layer.backgroundColor = [UIColor orangeColor].CGColor;
self.view.layer.cornerRadius = 10.0;
self.view.layer.masksToBounds = YES;
self.view.layer.frame = CGRectInset(self.view.layer.frame, 40, 40);
//check if the background is from the photo library and create a sublayer for the semi transparent white badge and a textsublayer for the countdown labels. Also hide the regular view labels
NSString *path = [_occasion imagePath];
if (path != nil && [path hasPrefix:#"ass"])
{
//Make a subview with a UIImageView inside for the badge
CGRect badgeRect = CGRectMake(32, 13, 236, 222);
UIView *badge = [[UIView alloc] initWithFrame:badgeRect];
imageView = [[UIImageView alloc]initWithFrame:[badge frame]];
[imageView setImage:[UIImage imageNamed:#"badge.png"]];
[badge addSubview:imageView];
[self.view addSubview:badge];
/*[self.view bringSubviewToFront:countDownLabel];
[self.view bringSubviewToFront:daysLabel];
[self.view bringSubviewToFront:hoursLabel];
[self.view bringSubviewToFront:minutesLabel];
[self.view bringSubviewToFront:secondsLabel];
[self.view bringSubviewToFront:daysName];
[self.view bringSubviewToFront:hoursName];
[self.view bringSubviewToFront:minutesName];
[self.view bringSubviewToFront:secondsName];*/
[badge addSubview:countDownLabel];
[badge addSubview:daysLabel];
[badge addSubview:hoursLabel];
[badge addSubview:minutesLabel];
[badge addSubview:secondsLabel];
[badge addSubview:daysName];
[badge addSubview:hoursName];
[badge addSubview:minutesName];
[badge addSubview:secondsName];
//more code for recognizing the touches on the subview
Just put them on the UIImageView and they'll move along with it.
You can get the position of your subview and change the position of you labels according to that.