Storage File

           As u have used NSUserDefaults to store values of type whatever you want to choose from the List of Valid Object to set for a specified Key.
 Like if you want to set NSDictionary Object to NSUserDefaults then you use code like this  [[NSUserDefaults standardUserDefaults] setObject:dictionaryObject forKey:@"myDictionary"];
 Similarly Storage File will work for you.

 You Just need to use this file like

 [[SharedManager sharedManager] setObject:dictionaryObject forKey:@"myDictionary"];

 How it works--

 It has one static instance of storage file that it returns when you call [SharedManager sharedManager].
 As it is static instance, Any change to this file will reflect in all the class in which you are using it.And change from anywhere to this class will update it to be used in another class.

 It has its own plist file that keep your value persist when application closed.And return it to you whenever you call it again after launching application next time.

 Plus point is that you can also store CGRect and CGSize to this file.

SharedManager.h File

SharedManager.m File

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I have used this file as you can see below how to set data to it.


    SharedManager *sm=[SharedManager sharedManager];
   
    NSArray *myArray=[[NSArray alloc] initWithObjects:@"Rohan",@"Folks",@"Alien",@"Animals",@"Karizma",nil];
   
    NSDictionary *myDictionary=[[NSDictionary alloc] initWithObjectsAndKeys:@"Banana",@"Fruit",@"Zebra",@"Animal",@"Parrot",@"Birds",nil];
   
    NSString *myString=@"I am String";
   
    NSData *data=[myString dataUsingEncoding:NSUTF8StringEncoding];
   
    CGRect rect=CGRectMake(97, 443, 200, 450);
   
    CGSize size=CGSizeMake(340, 564);
   
    [sm setSize:size ForKey:@"mysize"];
    [sm setRect:rect ForKey:@"myrect"];
    [sm setData:data ForKey:@"mydata"];
    [sm setBool:YES ForKey:@"mybool"];
    [sm setObject:myString ForKey:@"myStr"];
    [sm setObject:myArray ForKey:@"myarray"];
    [sm setObject:myDictionary ForKey:@"mydict"];


And here is reference code to use this for getting info's you have set.

    SharedManager *sm=[SharedManager sharedManager];
   
    NSLog(@"my size string is %@",NSStringFromCGSize([sm sizeForKey:@"mysize"]));
    NSLog(@"my rectangle is %@",NSStringFromCGRect([sm rectForKey:@"myrect"]));
    NSLog(@"my data to string is %@", [[NSString alloc] initWithData:[sm dataForKey:@"mydata"] encoding:NSUTF8StringEncoding]);
    NSLog(@"my bool is %i",[sm boolForKey:@"mybool"]);
    NSLog(@"my array is %@",[sm ObjectForKey:@"myarray"]);
    NSLog(@"my dict is %@",[sm ObjectForKey:@"mydict"]);
    NSLog(@"my string is %@",[sm ObjectForKey:@"myStr"]);

Setting gradient colors to UISlider bar.

You can make your slider more beautiful by applying custom gradient colors to it.Have  a look at following tricks we can use to colorful our UISlider object.

Import QuartzCore Framework.

Create an instance of UISlider and pass it with array of colors to set in to slider bar only after it has been instantiated successfully.

Gradient Set method is displaying below:----

Now Let us see what we have done in this method.

0)Get min_trackImageView and max_trackImageView object from subviews of UISlider object.
1)Create gradient Layers for min_trackImage and max_trackImage respectively.
2)Set layers frame to slider min_trackImage frame and max_trackImage properly along with changing x position of gradient layer.
3)Set its startPoint to Left and endPoint to right.
4)Using QuartzCore concept we set layers corner radius to 5.0;
5)Assign color array to gradient Layer and insert as subLayer to min_trackImageView and _max_trackImageView at index 0;

How to use it:-

Using this method is very simple . Just call this method with slider object and color array as parameter after UISlider Object has instanciated otherwise you will not see code reflection to your device or simulator.

Here is a piece of code displaying how to use it.---

And here is your output.