I have an app.In this app so many class methods used.I want to know is it possible to remove subview from class mehtod?
+(void)addPregressIndicator:(NSString *)strText view:(UIView *)ShowView
{
CGRect appFrame = [[UIScreen mainScreen] applicationFrame];
UIView *busyView = [[UIView alloc] initWithFrame:appFrame];
busyView.backgroundColor = [UIColor clearColor];
busyView.opaque = YES;
UIView *container = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 95, 95)];
container.layer.borderWidth = 5;
container.layer.cornerRadius = 10;
container.layer.borderColor = [UIColor whiteColor].CGColor;
[container setBackgroundColor:[UIColor blackColor]];
UIActivityIndicatorView *av = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhiteLarge];
av.center = CGPointMake(container.center.x, 34);
av.hidesWhenStopped = NO;
[av startAnimating];
UILabel *lbl = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, 95, 30)];
lbl.text = strText;
lbl.textAlignment = NSTextAlignmentCenter;
lbl.center = CGPointMake(container.center.x, 70);
lbl.textColor = [UIColor whiteColor];
lbl.backgroundColor = [UIColor clearColor];
[container addSubview:av];
[container addSubview:lbl];
container.center = busyView.center;
[busyView addSubview:container];
[ShowView addSubview:busyView];
}
+(void)removePregressIndicator:(UIView *)hideView;
{
// i want remove busyview that subview in viewcontroller.
}
Please help me to remove subivew.
You can set a unique tag for the busyView like this busyView.tag = your unique tag;
And then you can remove the view with this code
+(void)removePregressIndicator:(UIView *)hideView;
{
UIView *busyView = [hideView viewWithTag:your unique tag];
if (busyView){
[busyView removeFromSuperview];
}
}
You should make sure that the busyView tag is unique for all the subviews of hideView.
Assigne tag to a each view and access the view with tag and put it
+(void)removePregressIndicator:(UIView *)hideView;
{
UIView *viewToRemove = [self.view viewWithTag:assigne_tag];
[viewToRemove removeFromSuperview];
}
+ (void)removePregressIndicator:(UIView *)hideView;
{
UIView *progView=[self.view viewWithTag:YourTag];
[progView removeFromSuperview];
}
Related
I have a "scroll to load more" behavior on my UITableView. It starts loading more content when you scroll to the bottom. What I want to achieve is to show a UIActivityIndicatorView at the bottom of the UITableView when service call is in progress, and hide it when new items are added.
What is a good way to solve this problem? I am using Swift but objective-C solutions are also welcome.
I have implemented the same functionality in objective-C
In the cellForRowAtIndexPath
if (indexPath.row == [self.yourArrayData count] - 1)
{
// Call the API
[self loadMoreData:#"all" andPages:[NSString stringWithFormat:#"%ld", (long)pages] AndIsLoadMore:YES];
}
Add loader or design
-(void)addLoaderViewAtBottom {
viewLoader = [[UIView alloc] initWithFrame:CGRectMake(0, self.view.frame.size.height-100, self.view.frame.size.width, 50)];
[viewLoader setBackgroundColor:[UIColor whiteColor]];
[self.view addSubview:viewLoader];
UIActivityIndicatorView *activityIndicator1 = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleGray];
activityIndicator1.center = CGPointMake((SCREEN_SIZE.width/2), 30);
activityIndicator1.alpha = 1.0;
activityIndicator1.hidden = NO;
[viewLoader addSubview:activityIndicator1];
[activityIndicator1 startAnimating];
}
-(void)hideLoaderView {
[UIView animateWithDuration:1
animations:^(void) {
[viewLoader setFrame:CGRectMake(0, self.view.frame.size.height, self.view.frame.size.width, 50)];
}];
}
then use this two methods in your API call method. Call addLoaderViewAtBottom when API call starts and call hideLoaderView after getting the responses
Happy coding...
Initialize UIActivityIndicatorView:
#interface MyBulletinVC ()
{
UIActivityIndicatorView *activityLoadMore;
}
-(void)viewDidLoad
{
activityLoadMore = [[UIActivityIndicatorView alloc]initWithActivityIndicatorStyle:(UIActivityIndicatorViewStyleGray)];
}
Check when UITableView is being scrolled and what is the content offset
- (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView
{
float bottomEdge = scrollView.contentOffset.y + scrollView.frame.size.height;
float tblBottomEdge = _tblBulletin.frame.size.height+_tblBulletin.frame.origin.y;
if (bottomEdge <= tblBottomEdge)
{
return;
}
if (bottomEdge >= scrollView.contentSize.height)
{
[self show_bottom_loader];
}
}
If applicable as per content offset then display loader in footer of table:
-(void)show_bottom_loader
{
_tblBulletin.tableFooterView = [self returnLoaderViewWhileFetchingRecords];
CGPoint newContentOffset = CGPointMake(0, [_tblBulletin contentSize].height - _tblBulletin.bounds.size.height);
[_tblBulletin setContentOffset:newContentOffset animated:YES];
[self getNewsRecords];
}
Hide footer when data is loaded:
-(void)hide_bottom_loader
{
_tblBulletin.tableFooterView = nil;
UIView *v = [[UIView alloc] initWithFrame:CGRectZero];
v.backgroundColor = [UIColor clearColor];
[_tblBulletin setTableFooterView:v];
[activityLoadMore stopAnimating];
}
-(UIView*)returnLoaderViewWhileFetchingRecords
{
UIView *view = [[UIView alloc]initWithFrame:CGRectMake(0,0,_tblBulletin.frame.size.width,44)];
view.backgroundColor =[UIColor clearColor];
UILabel *lblBg =[[UILabel alloc]initWithFrame:CGRectMake(0,1,_tblBulletin.frame.size.width,42)];
lblBg.backgroundColor =[UIColor whiteColor];
[view addSubview:lblBg];
UILabel *lbl =[[UILabel alloc]initWithFrame:CGRectMake(_tblBulletin.frame.size.width/2 - 20,0,_tblBulletin.frame.size.width/2,view.frame.size.height)];
lbl.textAlignment = NSTextAlignmentLeft;
lbl.text = #"Loading...";
lbl.font = [UIFont fontWithName:#"Arial" size:14.0f];
lbl.textColor = [UIColor darkGrayColor];
lbl.backgroundColor = [UIColor clearColor];
lbl.userInteractionEnabled = NO;
[view lbl];
activityLoadMore.frame = CGRectMake(_tblBulletin.frame.size.width/2-35,22,0,0);
[activityLoadMore startAnimating];
[view addSubview:activityLoadMore];
return view;
}
-(void)getNewsRecords
{
//fetch new records and add to your array.
[self hide_bottom_loader];
//reload table.
}
Replace tblBulletin with you table name.
Hi i am beginner in iOS and in my project i need to insert "titles" at "left side center" and "right side center" on UInavigationBar as like below image please help me how should i do below my requirement
See below code and try :
- (void)viewDidLoad
{
[super viewDidLoad];
CGRect frame = [[UIScreen mainScreen] bounds];
UILabel *lbl1 = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, frame.size.width/2, 44)];
lbl1.backgroundColor = [UIColor redColor];
lbl1.textAlignment = NSTextAlignmentCenter;
lbl1.text = #"Dashboard";
[self.navigationController.navigationBar addSubview:lbl1];
UILabel *lbl2 = [[UILabel alloc] initWithFrame:CGRectMake(frame.size.width/2, 0, frame.size.width/2, 44)];
lbl2.backgroundColor = [UIColor redColor];
lbl2.textAlignment = NSTextAlignmentCenter;
lbl2.text = #"Profile";
[self.navigationController.navigationBar addSubview:lbl2];
}
You can customize the titleView of navigation bar. Read the official documentation here.
As per your question, I tried the below working code:-
-(UIView *)getTitleView
{
CGRect frame = [[UIScreen mainScreen] bounds];
UIView *viewTitle = [[UIView alloc]initWithFrame:CGRectMake(0, 0, frame.size.width, self.navigationController.navigationBar.frame.size.height)];
UILabel *lbl1 = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, frame.size.width/2, self.navigationController.navigationBar.frame.size.height)];
lbl1.backgroundColor = [UIColor colorWithRed:130/255.0f green:13/255.0f blue:23/255.0f alpha:1.0f];
lbl1.textAlignment = NSTextAlignmentCenter;
[lbl1 setTextColor:[UIColor whiteColor]];
lbl1.text = #"Dashboard";
[viewTitle addSubview:lbl1];
UILabel *lbl2 = [[UILabel alloc] initWithFrame:CGRectMake(frame.size.width/2, 0, frame.size.width/2, viewTitle.frame.size.height)];
lbl2.backgroundColor = [UIColor colorWithRed:130/255.0f green:13/255.0f blue:23/255.0f alpha:1.0f];
[lbl2 setTextColor:[UIColor whiteColor]];
lbl2.textAlignment = NSTextAlignmentCenter;
lbl2.text = #"Profile";
[viewTitle addSubview:lbl2];
return viewTitle;
}
- (void)viewDidLoad {
[super viewDidLoad];
self.navigationItem.titleView = [self getTitleView];
}
I divide the code in separate method to follow modular approach. For any part of code, which is of separate task, write that piece of code in different method. This will lead to more readability.
I am trying to add the uiLabel on top of the uiImageVIew which is the background image. When it comes to adding the uiLabel on top of the uiImageView, the uilabel cannot be aded when testing and running. Would you please tell me the alternatives or precautions if doing so ?
The below is my code :
#implementation CoverViewController
- (void)viewDidLoad {
[super viewDidLoad];
_container = [[UIView alloc] initWithFrame:[self.view bounds]];
[self setTapDemo :[UIImage imageNamed:#"cover_1_d.png"] ] ;
}
- (void) setTapDemo: (UIImage *) cover {
_image = [UIImage imageNamed:#"shaded_region.png"];
_imageShaded = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height)];
[_imageShaded setImage:_image];
UIImageView *imageView = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height)];
[imageView setImage: cover ];
_imageShaded.userInteractionEnabled = YES;
UITapGestureRecognizer *myGesture = [[UITapGestureRecognizer alloc]initWithTarget:self action:#selector(touchesBegan:)];
myGesture.numberOfTapsRequired = 1;
myGesture.delegate=self;
[_imageShaded addGestureRecognizer:myGesture];
[_imageShaded setContentMode:UIViewContentModeScaleAspectFill];
NSString * text = #"Quad name:";
CGSize labelSize = CGSizeMake(60, CGFLOAT_MAX);
UILabel *fromLabel = [[UILabel alloc]initWithFrame:CGRectMake(91, 15, labelSize.width, labelSize.height)];
fromLabel.text = text;
fromLabel.numberOfLines = 1;
fromLabel.lineBreakMode = NSLineBreakByWordWrapping;
fromLabel.baselineAdjustment = UIBaselineAdjustmentAlignBaselines; // or UIBaselineAdjustmentAlignCenters, or UIBaselineAdjustmentNone
fromLabel.adjustsFontSizeToFitWidth = YES;
fromLabel.minimumScaleFactor = 10.0f/12.0f;
fromLabel.clipsToBounds = YES;
fromLabel.backgroundColor = [UIColor clearColor];
fromLabel.textAlignment = NSTextAlignmentLeft;
[_imageShaded addSubview:fromLabel];
[imageView addSubview:fromLabel];
[_container addSubview:_imageShaded];
[_container addSubview:imageView];
[_container addSubview:fromLabel];
[self.view addSubview:_container];
[self.view sendSubviewToBack:_container];
}
Check This
- (void) setTapDemo: (UIImage *) cover {
_image = [UIImage imageNamed:#"images.jpg"];
_imageShaded = [[UIImageView alloc] initWithFrame:CGRectMake(0, 60, self.view.frame.size.width, self.view.frame.size.height)];
[_imageShaded setImage:_image];
UIImageView *imageView = [[UIImageView alloc] initWithFrame:CGRectMake(0, 60, self.view.frame.size.width, self.view.frame.size.height)];
[imageView setImage: cover ];
_imageShaded.userInteractionEnabled = YES;
UITapGestureRecognizer *myGesture = [[UITapGestureRecognizer alloc]initWithTarget:self action:#selector(touchesBegan:)];
myGesture.numberOfTapsRequired = 1;
myGesture.delegate=self;
[_imageShaded addGestureRecognizer:myGesture];
[_imageShaded setContentMode:UIViewContentModeScaleAspectFill];
NSString * text = #"Quad name:";
// CGSize labelSize = CGSizeMake(60, CGFLOAT_MAX);
UILabel *fromLabel = [[UILabel alloc]initWithFrame:CGRectMake(91, 15, 300, 40)];
fromLabel.text = text;
fromLabel.textColor = [UIColor greenColor];
fromLabel.numberOfLines = 1;
fromLabel.lineBreakMode = NSLineBreakByWordWrapping;
fromLabel.baselineAdjustment = UIBaselineAdjustmentAlignBaselines; // or UIBaselineAdjustmentAlignCenters, or UIBaselineAdjustmentNone
fromLabel.adjustsFontSizeToFitWidth = YES;
fromLabel.minimumScaleFactor = 10.0f/12.0f;
fromLabel.clipsToBounds = YES;
fromLabel.backgroundColor = [UIColor clearColor];
fromLabel.textAlignment = NSTextAlignmentLeft;
[_container addSubview:_imageShaded];
[_container addSubview:imageView];
[self.view addSubview:_container];
[self.view sendSubviewToBack:_container];
[imageView addSubview:fromLabel];
}
You are adding your UILabel more than once on different views. you should add it on a single view at a time;
//[_imageShaded addSubview:fromLabel]; // 1
//[imageView addSubview:fromLabel]; // 2
[_container addSubview:_imageShaded];
[_container addSubview:imageView];
//[_container addSubview:fromLabel]; //3
I'm setting up a subclass of UIView to roll my own UIAlertView style view. I've got everything set up properly with displaying the view, but I'm at a bit of a loss as to how to dismiss the view properly. Specifically, when a user taps on the button in the view, it needs to animate out of the main view. This is the code for the view itself:
+ (void)showCustomAlertWithTitle:(NSString *)titleString andMessage:(NSString *)messageString inView:(UIView *)view andButton1Title: (NSString *)button1Title andButton2Title: (NSString *)button2Title
{
UIWindow *window = [[[UIApplication sharedApplication] windows] lastObject];
CGRect windowFrame = window.frame;
[view setAlpha:0.5f];
UIColor *buttonColor = [UIColor colorWithRed:0/255.0f green:130/255.0f blue:216/255.0f alpha:1];
UIColor *titleColor = [UIColor colorWithRed:0/255.0f green:153/255.0f blue:102/255.0f alpha:1];
// Shade
UILabel *shadeWindow = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, windowFrame.size.width, windowFrame.size.height)];
shadeWindow.backgroundColor = [UIColor blackColor];
shadeWindow.alpha = 0.50f;
// Define size and origin of alert box
float alertBoxHeight = 225;
float alertBoxWidth = 200;
float alertBoxXorigin = windowFrame.size.width / 2 - (alertBoxWidth / 2);
float alertBoxYorigin = windowFrame.size.height / 2 - (alertBoxHeight / 2);
// Initialize background
UIView *alertBackground = [[UIView alloc] initWithFrame:CGRectMake(alertBoxXorigin, alertBoxYorigin, alertBoxWidth, alertBoxHeight)];
alertBackground.layer.cornerRadius = 5.0f;
[alertBackground.layer setMasksToBounds:YES];
alertBackground.layer.backgroundColor = [UIColor whiteColor].CGColor;
// Title Label
UILabel *titleLabel = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, alertBoxWidth, 40)];
titleLabel.text = titleString;
titleLabel.textAlignment = NSTextAlignmentCenter;
titleLabel.textColor = titleColor;
titleLabel.layer.backgroundColor = [UIColor colorWithRed:0 green:0 blue:0 alpha:0.05f].CGColor;
[titleLabel setFont:[UIFont fontWithName:#"AvenirNext-Bold" size:20.0]];
// Title Divider
UILabel *titleDivider = [[UILabel alloc] initWithFrame:CGRectMake(0, 40, alertBoxWidth, 1.0)];
titleDivider.backgroundColor = [UIColor grayColor];
titleDivider.alpha = 0.5f;
// Alert Message Text
UITextView *alertMessage = [[UITextView alloc] initWithFrame:CGRectMake(0, 40, alertBoxWidth, alertBoxHeight - 90)];
alertMessage.text = messageString;
alertMessage.layer.backgroundColor = [UIColor whiteColor].CGColor;
[alertMessage setFont:[UIFont fontWithName:#"Avenir" size:15.0]];
alertMessage.textAlignment = NSTextAlignmentCenter;
alertMessage.textColor = [UIColor grayColor];
[alertMessage setEditable:NO];
// Button 1
UIButton *button1 = [[UIButton alloc] init];
UIButton *button2 = [[UIButton alloc] init];
[button1 addTarget:self action:#selector(buttonPressed:) forControlEvents:UIControlEventTouchUpInside];
if (button2Title == nil)
{
button1.frame = CGRectMake(10, alertBoxHeight - 50, alertBoxWidth - 20, 40);
}
else
{
button1.frame = CGRectMake(10, alertBoxHeight - 50, (alertBoxWidth / 2) - 20, 40);
button2.frame = CGRectMake(alertBoxWidth / 2 + 10, alertBoxHeight - 50, (alertBoxWidth / 2) - 20, 40);
}
button1.layer.backgroundColor = buttonColor.CGColor;
[button1 setTitle:button1Title forState:UIControlStateNormal];
[button1.titleLabel setFont:[UIFont fontWithName:#"AvenirNext-Bold" size:15.0f]];
button1.layer.cornerRadius = 2.5f;
[button1.layer setMasksToBounds:YES];
// Button 2
button2.layer.backgroundColor = buttonColor.CGColor;
[button2 setTitle:button2Title forState:UIControlStateNormal];
[button2.titleLabel setFont:[UIFont fontWithName:#"AvenirNext-Bold" size:15.0f]];
button2.layer.cornerRadius = 2.5f;
[button2.layer setMasksToBounds:YES];
// Bounce Implementation
alertBackground.transform = CGAffineTransformMakeScale(0.01, 0.01);
[UIView animateWithDuration:0.25 delay:0 options:UIViewAnimationOptionCurveEaseOut animations:^
{
alertBackground.transform = CGAffineTransformIdentity;
}
completion:^(BOOL finished)
{
// do something once the animation finishes, put it here
}];
[window addSubview:view];
[window addSubview:alertBackground];
[view addSubview:shadeWindow];
[view bringSubviewToFront:alertBackground];
[alertBackground addSubview:button1];
[alertBackground addSubview:titleLabel];
[alertBackground addSubview:titleDivider];
[alertBackground addSubview:alertMessage];
[alertBackground addSubview:button2];
[alertBackground bringSubviewToFront:titleDivider];
/* [[[customAlerts sharedInstance] subViewArray] addObject:alertBackground];
[[[customAlerts sharedInstance] subViewArray] addObject:view];
[[[customAlerts sharedInstance] subViewArray] addObject:window];*/
}
When button1 is tapped, for instance, I need to have it animate the view out of the superView and remove it from the stack. I'm not sure how to handle this. Does anyone have any ideas?
To permanently remove a view, I generally use the UIView instance method removeFromSuperview. followed by a line setting the relevant variable to nil:
[myAlertView removeFromSuperview];
myAlertView = nil;
In your case then, I think you need to move the view off the screen by animating the its bounds property, then use the above couple of lines to remove any references to it.
Just found the answer here:
Dismiss view controller from #selector without creating seperate method
Had to download some custom classes but it worked:
[button1 addEventHandler:^(id sender, UIEvent *event)
{
[UIView animateWithDuration:0.25f animations:^{
[alertBackground setAlpha:0.0f];
[shadeWindow setAlpha:0.0f];
[window setAlpha:0.0f];
}];
} forControlEvent:UIControlEventTouchUpInside];
Custom classes can be found here:
https://github.com/ZeR0-Wu/JTTargetActionBlock
I am adding some dynamic UIView named as *cellSeparator and other UILabels...now what happen is when i again call this code then its rewrite the label text and overwrite on previously created label text...i am not very much aware to this ios development.so can anyone please tell me how can i remove this UIView dynamically before creating again?beacause UIView is dynamically created i dont know how to remove that UIview
UILabel *indexLabel = [[UILabel alloc] initWithFrame:CGRectMake(20, self.view.frame.size.height-150, self.view.frame.size.width/2,30)];
[indexLabel setBackgroundColor:[UIColor clearColor]];
indexLabel.textColor = [UIColor whiteColor];
indexLabel.text = #"Details:-";
indexLabel.font = [UIFont systemFontOfSize:20.00];
UILabel *tagLabel = [[UILabel alloc] initWithFrame:CGRectMake(20, self.view.frame.size.height-120, self.view.frame.size.width/2, 30)];
tagLabel.backgroundColor = [UIColor clearColor];
NSLog(#"LOg %#",imageId);
NSLog(#"LOg %#",imageStyle);
NSLog(#"LOg %#",imageType);
NSLog(#"LOg %#",imageWeight);
tagLabel.text = [NSString stringWithFormat:#"The Id of Jewl Is: %#",imageId];
imageTypelabel= [[UILabel alloc] initWithFrame:CGRectMake(20, self.view.frame.size.height-90, self.view.frame.size.width/2, 30)];
imageTypelabel.backgroundColor = [UIColor clearColor];
imageTypelabel.text = [NSString stringWithFormat:#"The Type of Jewl Is: %#",imageType];
imageStylelabel = [[UILabel alloc] initWithFrame:CGRectMake(20, self.view.frame.size.height-60, self.view.frame.size.width/2, 30)];
imageTypelabel.backgroundColor = [UIColor clearColor];
imageStylelabel.text = [NSString stringWithFormat:#"The style of Jewl Is: %#",imageStyle];
imageWeightlabel = [[UILabel alloc] initWithFrame:CGRectMake(20, self.view.frame.size.height-30, self.view.frame.size.width/2, 30)];
imageStylelabel.backgroundColor = [UIColor clearColor];
imageWeightlabel.text = [NSString stringWithFormat:#"The weight of Jewl Is: %#",imageWeight];
imageWeightlabel.backgroundColor = [UIColor clearColor];
imageWeightlabel.textColor = [UIColor whiteColor];
imageTypelabel.textColor = [UIColor whiteColor];
imageWeightlabel.textColor = [UIColor whiteColor];
tagLabel.textColor = [UIColor whiteColor];
UIImage *imageBegin = [UIImage imageNamed:imageName];
UIImageView *imageView = [[UIImageView alloc] initWithImage:imageBegin];
UIView *cellSeparator = [[UIView alloc] initWithFrame:CGRectMake(0,545, self.view.frame.size.width ,3)];
cellSeparator.tag=1;
[cellSeparator setAutoresizingMask:UIViewAutoresizingFlexibleLeftMargin |
UIViewAutoresizingFlexibleRightMargin |
UIViewAutoresizingFlexibleWidth];
[cellSeparator setContentMode:UIViewContentModeTopLeft];
[cellSeparator setBackgroundColor:[UIColor whiteColor]];
[self.view addSubview:cellSeparator];
You could write a method to remove all the subviews of the view and modify this code according to your need.
- (void)removeSubviewsOfView
{
NSArray *subViews = [self.view subviews];
for(UIView *view in subViews)
{
[view removeFromSuperview];
}
}