In my application,i created an imageview on the above the tabbar.I want to display some images here for displaying some adds there.
What my actual problem is...i added this on my table view and whenever i am scrolling the table view ,my imageview is also scrolling.Please help me in this
Thanks in advance.Here is my code
UIImageView *currentLocationImageView = [[UIImageView alloc] init];
NSURL *url1 = [NSURL URLWithString:#"http://imgsrv.995themountain.com/image/kqmt2/UserFiles/Image/SiteGraphics/MTNVideos360x80.jpg"];
UIImage *img1 = [UIImage imageWithData: [NSData dataWithContentsOfURL:url1]];
NSURL *url2 = [NSURL URLWithString:#"http://download.xbox.com/content/images/35f6c527-fb73-40d3-bcb9-bdea2680bc03/1033/banner.png"];
UIImage *img2 = [UIImage imageWithData: [NSData dataWithContentsOfURL:url2]];
NSArray *images = [NSArray arrayWithObjects:img1, img2, nil];
[currentLocationImageView setAnimationImages:images];
[currentLocationImageView setAnimationRepeatCount:0];
[currentLocationImageView setAnimationDuration:5.0];
currentLocationImageView.frame = CGRectMake(0.0, 340.0, 320.0, 30.0);
//self.tableView.tableFooterView = currentLocationImageView;
[currentLocationImageView startAnimating];
[self.view addSubview:currentLocationImageView];
Without seeing more code, it looks as though you may be using a UITableViewController instead of a UIViewController. The difference between the two is important in the case of your last line [self.view addSubview:currentLocationImageView]. What that does in a UIViewController is adds it to the view that would be containing the tableview and the imageview. However, in a UITableViewController the self.view property holds the tableview itself, therefor, it ads your image view as a subview of the tableview, subjecting it to the tableview's scrolling behaviour.
What you can do is change from using a UITableViewController (probably going to be trivial for your application, but may be less than trivial depending on why you opted to use it in the first place); and you'll also need to explicitly create the tableview, and add it to the backing view of the UIViewController subclass you're writing—akin to how you're adding the imageview above.
Hope this helps.
Related
I'm not sure if I'm doing this correctly, but essentially I want to instantiate my uiimageviews when the controller loads. Afterwards, when I implement a method that executes on a timer, I want to grab the reference of the uiimageview depending on the index and add it to the view.
I'm using a NSMutableDictionary. I have all the code in the same method just to test it out. Shouldn't [self.view addSubview:poster]; place the first image in the current view?
self.images = [NSMutableDictionary dictionary];
CGRect imageFrame = CGRectMake(0.0, 0.0, 1024.0, 280.0);
UIImageView *image_one = [[UIImageView alloc] initWithFrame:imageFrame];
image_one.image = [UIImage imageNamed:#"image_one.png"];
NSString *theKey = [NSString stringWithFormat:#"%d",0];
[self.images setObject:image_one forKey:theKey];
UIImageView *image_two = [[UIImageView alloc] initWithFrame:imageFrame];
image_two.image = [UIImage imageNamed:#"image_two.png"];
NSString *theKey1 = [NSString stringWithFormat:#"%d",1];
[self.images setObject:image_two forKey:theKey1];
UIImageView *poster = (UIImageView *)[self.images objectForKey:0];
[self.view addSubview:poster];
First, I would suggest using an NSMutableArray. Since you are referencing the items in the array by an index anyways, might as well use an array.
Although with this code, there are a couple things you should change. You should allocate the NSMutableArray instead of using the autoreleased version.
When you are accessing the UIImageView, the key is a string, not an integer. So, it should read:
UIImageView *poster = (UIImageView *)[self.images objectForKey:#"0"];
I created multiple images without the use of interface builder. I used this code:
for (Row* row in parser.rows) {
CGRect IphoneFrameImageRect;
IphoneFrameImageRect = CGRectMake(10, 10, 150.0f, 150.0f);
UIImageView *IphoneFrame = [[UIImageView alloc] initWithFrame:IphoneFrameImageRect];
NSString *IphoneFrameurl = [NSString stringWithFormat:#"http://some.url.com/iphone/IphoneFrame.png"];
[IphoneFrame setImage:[UIImage imageWithData: [NSData dataWithContentsOfURL: [NSURL URLWithString:IphoneFrameurl]]]];
[IphoneFrame setTag:(i)];
IphoneFrame.opaque = YES; // explicitly opaque for performance
[self.view addSubview:IphoneFrame];
[IphoneFrame release];
}
I need to move these images to a different location in landscape mode. I did tag each image and it looks I can select the images back using this tag. But how can I gave the image a new coordinate ? I have this code:
-(void)positionViews {
UIInterfaceOrientation destOrientation = self.interfaceOrientation;
int i=4; //Picture with tag=4 for example
UIImage *tempImage=(UIImage *)[self.view viewWithTag:(i)];
// HOW TO MOVE ??
}
I am able to do this with a button using this code:
UIButton *tempButton=(UIButton *)[self.view viewWithTag:i];
[temp setFrame:CGRectMake(x, y, X10ButtonWidth, X10ButtonHeight)];
You are mixing up two different things / classes :
UIImage that represent image data, with its pixels, in memory
UIImageView that represent a view to display an image onscreen.
If it's more clear to you, an UIImage is to UIImageView what NSString is for an UILabel. The object representing the data/content is different from the view that can display it on screen.
So when you want to retrieve your imageview using the tag you set, you retrieve a view, especially an UIImageView for what matters, not an UIImage.
Change your cast to UIImageView and you will be able to call setFrame: on it the same way you do for your UIButton (as setFrame: is a method of the UIView class, and both UIImageView and UIButton are subclasses of UIView).
UIImageView *tempImageView = (UIImageView *)[self.view viewWithTag:(i)];
[tempImageView setFrame:...];
Or don't even do any cast, as viewWithTag: returns a UIView and that's all you need if you just want to change the frame: whether it's a basic UIView or specifically a UIImageView or whatever kind of view does not matter if you just want to change the frame property, as this is a property of the generic UIView class and can be applied to any UIView, whatever specific subclass of UIView it is.
UIView *tempImageView = [self.view viewWithTag:(i)];
[tempImageView setFrame:...];
I have an asychronous image loader which loads images (JImage) in a UIImageview. I want to display these in a tablecell. Obviously i cant set cell.imageView.image because i dont have an image, i just have a view.
How do i set the UIImageview to the tablecell? cell.backgroundView works though, but that paints over the whole cell.
The JImage code is:
NSURL *theUrl=[NSURL URLWithString:imageURL];
JImage *photoImage=[[JImage alloc] init];
[photoImage initWithImageAtURL:theUrl];
[photoImage setContentMode:UIViewContentModeRedraw];
[photoImage setFrame:CGRectMake(0.0f, 0.0f, 40.0f, 65.0f)];
cell.backgroundView = photoImage;
[photoImage release];
which in the JImage.m:
- (void)connectionDidFinishLoading:(NSURLConnection*)theConnection
{
[self setImage:[UIImage imageWithData: data]];
}
use this code and set frame according to your need.
UIImage *imagearrow = [UIImage imageNamed:#"arrow.png"];
UIImageView *imgarrow=[[UIImageView alloc] initWithFrame:CGRectMake(290, 25, 7, 15)];
imgarrow.image =imagearrow;
[cell addSubview:imgarrow];
[imagearrow release];
You don't need to use JImage if all you want to do is load the image asynchronously. One easy way to do this is with GCD and blocks, like so: https://github.com/ChrisTec/iPhone-Book-CodeSamples/blob/master/Chapter%2013/RealEstateViewer%2013.2.5/RealEstateViewer/ImageTableViewController.m
Here's a sample chapter of the book Objective-C Fundamentals which I've co-authored that explains this code in depth: http://www.manning.com/fairbairn/OCF_sample_ch13.pdf
To sum it up: When the cell is requested, you look if you already have downloaded the image. If you have, you display it. If not, you display a spinner and start an async GCD block that will fetch the image. One that block is done, it will run another block on the main thread that switches the spinner out for the image. That's all.
I think you should take a different approach to this. Instead of putting your JImage in the cell, hold it somewhere else in the view controller, an NSArray is usually convenient. Then populate the cells with either placeholder images or just leave them empty.
So let's say you have an array with all the JImages that are loading, when the JImage in the position x of the array finishes loading, you reload that specific cell as it follows:
NSIndexPath indexPath = [NSIndexPath indexPathForRow:x inSection:0];
[self.tableView reloadRowsAtIndexPaths:x withRowAnimation:NO];
And in your cellForRow:AtIndexPath you just have to take the image from the JImage object held in the array.
I hope this helps you
I am a beginner at Obj-C/Cocoa Touch/iPhone OS.
I wish to have a background for my app with different images everytime the the view is called.
Say I have 10 images. I 've used it like this:
//random image generation
NSString* imageName;
int aRandomNumber = arc4random() % 10;
imageName =[NSString stringWithFormat:#"g%d.jpg",aRandomNumber];
self.view.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageWithContentsOfFile:[[[NSBundle mainBundle] resourcePath] stringByAppendingPathComponent:imageName]]];
NSLog(#"aRandomNumber is %d", aRandomNumber);
//random image is generated
Its working fine
Now, say I have text labels on my view and the text isn't displaying correctly due to image colors.
How can I make it a little transparent? (I guess in Interface Builder its called alpha.)
Say my image isn't 320x480. How do I set it to fill the entire view?
How can I do it with UIView/UIImageView?
I found initWithHue:saturation:brightness:alpha: in the documentation but it's not working:
self.view.backgroundColor = [[UIColor alloc] initWithHue:0.0 saturation:1.0 brightness:1.0 alpha:1.0];
Please Help!
A friend suggested........
self.view.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageWithContentsOfFile:[[[NSBundle mainBundle] resourcePath] stringByAppendingPathComponent:imageName]]];
..........he told it's more efficient because it doesn't save the image in the cache.
self.view.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageNamed:#"imageName.png"]];
more info with example project
Besides all of the other responses here, I really don't think that using backgroundColor in this way is the proper way to do things. Personally, I would create a UIImageView and insert it into your view hierarchy. You can either insert it into your top view and push it all the way to the back with sendSubviewToBack: or you can make the UIImageView the parent view.
I wouldn't worry about things like how efficient each implementation is at this point because unless you actually see an issue, it really doesn't matter. Your first priority for now should be writing code that you can understand and can easily be changed. Creating a UIColor to use as your background image isn't the clearest method of doing this.
use this
self.view.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageNamed:#"Default"]];
simple way :
-(void) viewDidLoad {
self.view.backgroundColor = [[UIColor alloc] initWithPatternImage:[UIImage imageNamed:#"background.png"]];
[super viewDidLoad];
}
It's a very bad idea to directly display any text on an irregular and ever changing background. No matter what you do, some of the time the text will be hard to read.
The best design would be to have the labels on a constant background with the images changing behind that.
You can set the labels background color from clear to white and set the from alpha to 50.0 you get a nice translucent effect. The only problem is that the label's background is a stark rectangle.
To get a label with a background with rounded corners you can use a button with user interaction disabled but the user might mistake that for a button.
The best method would be to create image of the label background you want and then put that in an imageview and put the label with the default transparent background onto of that.
Plain UIViews do not have an image background. Instead, you should make a UIImageView your main view and then rotate the images though its image property. If you set the UIImageView's mode to "Scale to fit" it will scale any image to fit the bounds of the view.
You want the background color of your main view to be semi-transparent? There's nothing behind it... so nothing will really happen however:
If you want to modify the alpha of any view, use the alpha property:
UIView *someView = [[UIView alloc] init];
...
someView.alpha = 0.8f; //Sets the opacity to 80%
...
Views themselves have the alpha transparency, not just UIColor.
But since your problem is that you can't read text on top of the images... either:
[DESIGN] Reconsider the design/placement of the images. Are they necessary as background images? What about the placement of the labels?
[CODE] It's not exactly the best solution, but what you could do is create a UIView whose frame takes up the entire page and add some alpha transparency to it. This will create an "overlay" of sorts.
UIView *overlay = [[[UIView alloc] init] autorelease];
overlay.frame = self.view.bounds;
overlay.alpha = 0.2f;
[self.view addSubview:overlay];
... Add the rest of the views
You can set multiple background image in every view using custom method as below.
make plist for every theam with background image name and other color
#import <Foundation/Foundation.h>
#interface ThemeManager : NSObject
#property (nonatomic,strong) NSDictionary*styles;
+ (ThemeManager *)sharedManager;
-(void)selectTheme;
#end
#import "ThemeManager.h"
#implementation ThemeManager
#synthesize styles;
+ (ThemeManager *)sharedManager
{
static ThemeManager *sharedManager = nil;
if (sharedManager == nil)
{
sharedManager = [[ThemeManager alloc] init];
}
[sharedManager selectTheme];
return sharedManager;
}
- (id)init
{
if ((self = [super init]))
{
}
return self;
}
-(void)selectTheme{
NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
NSString *themeName = [defaults objectForKey:#"AppTheme"] ?: #"DefaultTheam";
NSString *path = [[NSBundle mainBundle] pathForResource:themeName ofType:#"plist"];
self.styles = [NSDictionary dictionaryWithContentsOfFile:path];
}
#end
Can use this via
NSDictionary *styles = [ThemeManager sharedManager].styles;
NSString *imageName = [styles objectForKey:#"backgroundImage"];
[imgViewBackGround setImage:[UIImage imageNamed:imageName]];
Im trying to load a single image into the grouped table cell. I found a piece of code on the internet and modified it. Original code is using UIViews to display image, which is not what I need, however original code works of course. PLease help me to make this code work to display an image in a sigle cell for grouped tableview. My TableView has only one row and it has UITableViewCellStyleDefault style.
Original Code
Here is my modified method, this is the core method.
- (void)connectionDidFinishLoading:(NSURLConnection*)theConnection
{
[connection release];
connection=nil;
UIImage *img = [UIImage imageWithData:data];
self.image = img;
self.frame = self.bounds;
[self setNeedsLayout];
[data release];
data=nil;
}
This is how I use it to display image in my TableView Cell cellForRowAtIndexPath method.
CGRect frame;
frame.size.width=75; frame.size.height=75;
frame.origin.x=0; frame.origin.y=0;
AsyncImageView* asyncImage = [[[AsyncImageView alloc] initWithFrame:frame] autorelease];
[asyncImage loadImageFromURL:imageURL];
cell.imageView.image = asyncImage.image;
In that code you posted, the image of the AsyncImageView doesn't get set until after the connection finishes loading and it actually creates the image. Problem is, you're setting it's image into the cell immediately. That's not going to work!
You're going to want to make a custom cell class (subclass UITableViewCell) and use that cell in your table. There's lots of sample code showing how to use custom cells and lay them out with views. Instead of using UITableViewCell's standard imageView, create your own layout and use an AsyncImageView to show your image. Then it should work.