Im trying to give a background for an image view only as white. Following is my code.
dataArray = [[NSMutableArray alloc] init];
[dataArray addObject:#"Knowledge"];
[dataArray addObject:#"Client"];
float screenWidth = [UIScreen mainScreen].bounds.size.width;
float pickerWidth = screenWidth * 3 / 4;
float xPoint = screenWidth / 2 - pickerWidth / 2;
pickerView = [[UIPickerView alloc] init];
pickerView.transform = CGAffineTransformMakeScale(1, 1);
[pickerView setDataSource: self];
[pickerView setDelegate: self];
[pickerView setFrame: CGRectMake(xPoint, 200.0f, pickerWidth, 200.0f)];
pickerView.showsSelectionIndicator = YES;
[pickerView selectRow:2 inComponent:0 animated:YES];
UIImageView *imageview = [[UIImageView alloc]
initWithFrame:CGRectMake(30, 20, 300, 400)];
[imageview setImage:[UIImage imageNamed:#"logo.png"]];
[imageview setContentMode:UIViewContentModeScaleAspectFit];
[imageview setBackgroundColor: [UIColor whiteColor]];
[self.view addSubview:imageview];
[self.view addSubview: pickerView];
Im facing two problems while doing so,
The background colour is being applied for both UIImageView and UiPickerView thought I have specified specifically as [imageview setBackgroundColor: [UIColor whiteColor]]; when it has to be only for UiImage.
The alignment changes when the phone is in landscape mode though I have given a proper coordinates. How can I sort this out?
Set pickerview's background color like,
pickerView.backgroundColor = [UIColor lightGrayColor]; //desired color
hope this will help :)
Try this code:
imageView.backgroundColor = [UIColor clearColor];
imageView.opaque = NO;
Try this :-
UIImageView *backgroundView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:#"background"]];
[self.view addSubview:backgroundView];
Related
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 have a UIImageView like so:
UIImage *image = [UIImage imageNamed:#"test.png"];
UIImageView *imageView = [[UIImageView alloc] initWithImage:image];
imageView.frame = CGRectMake(0, 0, 30, 30);
imageView.layer.cornerRadius = 5.0;
imageView.layer.masksToBounds = YES;
imageView.layer.borderColor = [UIColor lightGrayColor].CGColor;
imageView.layer.borderWidth = 0.1;
[self.view addSubview:imageView];
Couple of issues/questions:
How do I make this a clickable button?
I want to link to Settings (in my app) but do I have to create that image wheel like the settings icon that so many apps use or is it standard icon in iOS 7?
This is the icon I'm talking about:
Why doesn't my border show up?
1) If you want a button, you should use a UIButton and use [UIButton setImage: forState:]
2) Alternatively, you can add a UITapGestureRecognizer to your current UIImageView
here 2 choice u have to use your method
.h file
#import <QuartzCore/QuartzCore.h> //for radius and corner
1. UIButton
UIButton *btn1 = [UIButton buttonWithType:UIButtonTypeCustom];
[btn1 setTitle:#"Cool title" forState:UIControlStateNormal];
[btn1 setFrame:CGRectMake(7, 7, 150, 160)];
[btn1 setImage:[UIImage imageNamed:#"test.png"] forState:UIControlStateNormal];
[btn1 addTarget:self action:#selector(selectFav) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:btn1];
-(void) selectFav
{ //what ever you do like
}
2. UITap Gesture for UIImage View
UIImage *image = [UIImage imageNamed:#"test.png"];
UIImageView *imageView = [[UIImageView alloc] initWithImage:image];
imageView.frame = CGRectMake(0, 0, 30, 30);
imageView.layer.cornerRadius = 5.0;
imageView.layer.masksToBounds = YES;
imageView.layer.borderColor = [UIColor lightGrayColor].CGColor;
imageView.layer.borderWidth = 0.1;
UITapGestureRecognizer *tapGesture1 = [[UITapGestureRecognizer alloc] initWithTarget:self action:#selector(tapGesture:)];
tapGesture1.numberOfTapsRequired = 1;
[tapGesture1 setDelegate:self];
[imgView addGestureRecognizer:tapGesture1];
[self.view addSubview:imageView];
- (void) tapGesture: (id)sender
{
//handle Tap...
}
Try:
UIImage *image = [UIImage imageNamed:#"test.png"];
UIImageView *imageView = [[UIImageView alloc] initWithImage:image];
imageView.frame = CGRectMake(0, 0, 30, 30);
imageView.layer.cornerRadius = 5.0;
imageView.layer.masksToBounds = YES;
imageView.layer.borderColor = [UIColor lightGrayColor].CGColor;
imageView.layer.borderWidth = 0.1;
/* Here's the button Start */
UIButton *theButton = [[UIButton alloc]initWithFrame:CGRectMake(imageView.frame.origin.x, imageView.frame.origin.y, imageView.frame.size.width, imageView.frame.size.height)];
theButton.backgroundColor = [UIColor clearColor];
theButton.showsTouchWhenHighlighted = YES;
[theButton addTarget:self action:#selector(yourAction) forControlEvents:UIControlEventTouchUpInside];
[imageView addSubview:theButton];
/* Here's the button End */
[self.view addSubview:imageView];
Your border:
0.1 means is 1/10th of a point - try 1.0 for a nice fine line
Also set:
imageView.clipsToBounds = YES;
1:if you have image view and want to clickable
UIImage *image = [UIImage imageNamed:#"test.png"];
UIImageView *imageView = [[UIImageView alloc] initWithImage:image];
2: Add gesture to image view like this, but don’t forget to setUserInteractionEnabled:YES
UITapGestureRecognizer *TapGestureRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:#selector(markerMove:)];
[TapGestureRecognizer setNumberOfTapsRequired:1];
[TapGestureRecognizer setNumberOfTouchesRequired:1];
[imageView setUserInteractionEnabled:YES];
[imageView addGestureRecognizer: TapGestureRecognizer];
in ios5 i implemented my UIImageView like this:
UIImageView *imageView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:#"FirstScreen.png"]];
imageView.frame = CGRectMake(0.0,0.0,[GeneralUtils screenWidth],[GeneralUtils screenHeight]);
// !!!!!!!!!!!!!
[self.view addSubview: imageView];
[self.view sendSubviewToBack:imageView];
[self.view sendSubviewToBack:self.tableView];
Everything´s fine...But now in ios6 my UIImageView is not showing anymore....
try bellow code..
CGRect screenBounds = [[UIScreen mainScreen] bounds];
UIImageView *imageView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:#"FirstScreen.png"]];
imageView.frame = screenBounds;
[self.view addSubview:imageView];
[self.view bringSubviewToFront:self.tableView];
[self.tableView setBackgroundColor:[UIColor clearColor]];
Solved it by setting
[self.tableView setBackgroundView: nil];
I think my tableView was hiding the Image!
Im using the following codes to customize the navigationbar with an UIView. But why there is a gap in the left size of the navigationbar? ps. the gradient image is test.png.
Thanks in advance!
- (void)viewDidLoad
{
[super viewDidLoad];
// show image
UIImage *image = [UIImage imageNamed: #"test.png"];
UIImageView *imageView = [[UIImageView alloc] initWithImage: image];
[imageView setContentMode:UIViewContentModeScaleToFill];
imageView.frame = CGRectMake(0, 0, 320, 44);
// label
UILabel *tmpTitleLabel = [[UILabel alloc] initWithFrame:CGRectMake(110, 0, 100, 44)];
tmpTitleLabel.text = #"title";
tmpTitleLabel.textAlignment = UITextAlignmentCenter;
tmpTitleLabel.backgroundColor = [UIColor clearColor];
tmpTitleLabel.textColor = [UIColor whiteColor];
CGRect applicationFrame = CGRectMake(0, 0, 320, 44);
UIView * newView = [[UIView alloc] initWithFrame:applicationFrame];
[newView addSubview:imageView];
[newView addSubview:tmpTitleLabel];
self.navigationItem.titleView = newView;
}
Edit 1
Here is my test code and screen shot
- (void)viewDidLoad
{
[super viewDidLoad];
UIView * viewGreen = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 320, 44)];
UIView * viewRed = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 320, 44)];
[viewGreen setBackgroundColor:[UIColor greenColor]];
[viewRed setBackgroundColor:[UIColor redColor]];
self.navigationItem.titleView = viewRed;
[self.view addSubview:viewGreen];
}
your code is work fine.just check the image and transparency.
To add the line at last and check again
[self.view addSubview:newView];
problem is solved by the following code
[self.navigationBar insertSubview:imageView atIndex:1];
I am designing a viewcontroller which have several button bar, each bar canbe clicked and show a content view.like:
http://i.stack.imgur.com/m5V4Q.png
When I click the buttonbar, it's frame will expand bigger, and you can see the content in it(which is a button).
First, a bar button(320*30 size) and a contentView is a set, they are subviews of listview. And several listview makes the whole view.
Second, when I click it, the list view will expand from 320*30 to 320*180, the contentview in it will expand from 300*0 to 300 * 130(20 pixel of margin). and I set the clipsToBounds of contentview to Yes to make sure the content in contentview won't show when the frame height is 0.
Now,the click can show the contentview exactly as I want. But here is a problem: I can't click the button in it, and I tried to set their userInteractionEnabled to yes . And even I set the contentview as user-defined,which I set the view's userInteractionEnabled to yes and overwrite the touchbegin function to show a alertView. Those test are failed, no reaction found. And I checked and sure that there shouldn't be any view covered it.
What's the reason might be?
The code of setup the list view is:
NSArray *array = [titleArray objectAtIndex:i];
NSString *ShenSuoTitle = [array objectAtIndex:0];
NSString *ShenSuoContent = [array objectAtIndex:1];
UIView *listView = [[UIView alloc] initWithFrame:CGRectMake(0, totalHeight, 320, ShenSuoViewHeight)];
[listView setBackgroundColor:[UIColor blackColor]];
[listView setTag:[[NSString stringWithFormat:#"%d",(i+1)] intValue]];
[self.scrollView addSubview:listView];
totalHeight = totalHeight + 1 + ShenSuoViewHeight;
UIView *titleView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 320, ShenSuoViewHeight)];
[titleView setBackgroundColor:[UIColor whiteColor]];
[titleView setTag:[[NSString stringWithFormat:#"%d1",i+1] intValue]];
[listView addSubview:titleView];
UIButton *btn = [UIButton buttonWithType:UIButtonTypeCustom];
[btn setTag:[[NSString stringWithFormat:#"%d2",i+1] intValue]];
[btn setFrame:CGRectMake(0, 0, 320, ShenSuoViewHeight)];
[btn addTarget:self action:#selector(reSetFrame:) forControlEvents:UIControlEventTouchUpInside];
[titleView addSubview:btn];
UIImageView *img = [[UIImageView alloc] initWithFrame:CGRectMake(5, 12, 30, 30)];
img.image = [UIImage imageNamed:#"list_ico.png"];
[img setTag:[[NSString stringWithFormat:#"%d3",i+1] intValue]];
[titleView addSubview:img];
NSLog(#"img:%f,%f",img.frame.origin.y,img.frame.size.height);
UILabel *labTitle = [[UILabel alloc] initWithFrame:CGRectMake(35, 15, 100, 25)];
labTitle.textColor = [UIColor blackColor];
labTitle.backgroundColor = [UIColor clearColor];
labTitle.font = [UIFont boldSystemFontOfSize:15];
labTitle.text = ShenSuoTitle;
[titleView addSubview:labTitle];
NSLog(#"labTitle:%f,%f",labTitle.frame.origin.y,labTitle.frame.size.height);
//add a label for selected
UILabel *selectedLabel = [[UILabel alloc] initWithFrame:CGRectMake(214, 14, 86, 21)];
selectedLabel.textColor = [UIColor grayColor];
//selectedLabel.alpha = 0.75;
selectedLabel.backgroundColor = [UIColor clearColor];
selectedLabel.text = #"All";
selectedLabel.font = [UIFont boldSystemFontOfSize:15];
[selectedLabel setTag:[[NSString stringWithFormat:#"%d5",i+1] intValue]];
[titleView addSubview:selectedLabel];
NSLog(#"selectedLabel:%f,%f",selectedLabel.frame.origin.y,selectedLabel.frame.size.height);
UIView *content = [[UIView alloc] initWithFrame:CGRectMake(10, 10 + ShenSuoViewHeight, 300, 0)];
content.backgroundColor = [UIColor grayColor];
UILabel *testLa = [[UILabel alloc]initWithFrame:CGRectMake(0, 0, 100, 30)];
testLa.text = #"Label";
UIButton *testBut = [UIButton buttonWithType:UIButtonTypeRoundedRect];
testBut.frame = CGRectMake(0, 40, 100, 30);
testBut.titleLabel.textColor = [UIColor greenColor];
testBut.titleLabel.text = #"Button";
content.tag = [[NSString stringWithFormat:#"%d4",i+1] intValue];
[content addSubview:testLa];
[content addSubview:testBut];
content.clipsToBounds = YES;
[testLa release];
[listView addSubview:content];
[content release];
[labTitle release];
[img release];
[titleView release];
[listView release];
the code handle the click to make the list view expands is:
UIView *titleView = (UIView *)[self.view viewWithTag:[[NSString stringWithFormat:#"%d1",i+1] intValue]];
titleView.backgroundColor = [UIColor colorWithRed:0.92 green:0.92 blue:0.92 alpha:0.9];
UIView *listView = (UIView *)[self.view viewWithTag:[[NSString stringWithFormat:#"%d",i+1] intValue]];
listView.frame = CGRectMake(0, totalHeight, 320, ShenSuoViewHeight);
totalHeight = totalHeight + 1 + 20 + 180 + ShenSuoViewHeight;
UIView *content = [self.view viewWithTag:[[NSString stringWithFormat:#"%d4",i+1] intValue]];
content.frame = CGRectMake(10, 10 + ShenSuoViewHeight, 300, 180);
UIImageView *img = (UIImageView*)[self.view viewWithTag:[[NSString stringWithFormat:#"%d3",i+1] intValue]];
img.image = [UIImage imageNamed:#"list_ico_d.png"];
I'm not sure I follow your situation exactly, and some code would be nice. To answer your question though, the reason is most likely that the touch is being intercepted elsewhere. It may also be that you just forgot to connect an action method to the button. Try using breakpoints or NSLogs to see what methods are being triggered and which aren't.
Thanks a lot. It is due to my fault. The code of expanding the bar which setting the listview's frame is wrong, it should add in the expanded height. This leads the visual is ok but the clicking not be handled.
So this problem closed.