Storing results after screen is disappear

Question

I am developing a game,in that i want to add the points continuously,for this i used plist but whenever the screen is disappear and starts then plist starts again.what to do?

Thanks in Advance.

You need to write the code for saving the game data in -(void)viewWillDisappear; — V.J., May 10 '13 at 05:13

nzs · Accepted Answer · 2013-05-10T06:04:20.640

To add more info to Ahmed's answer you should implement in your AppDelegate.m three methods like this:

AppDelegate.h

NSNumber *gamescore;

@property(nonatomic, strong) NSNumber *gamescore;


#define UIAppDelegate \
   ((AppDelegate *)[UIApplication sharedApplication].delegate)

AppDelegate.m

@synthesize gamescore;

- (BOOL) checkFirstRun {
    NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
    NSNumber *defaultcheck;
    defaultcheck = [defaults objectForKey:@"GameScore"];
    if (defaultcheck==nil) {
        return TRUE;
    } else {
        return FALSE;
    }
}

- (void) storeGlobalVars {
    NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
    [defaults setObject:gamescore forKey:@"GameScore"];
    [defaults synchronize];
}

- (void) readGlobalVars {
    NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
    gamescore = [defaults objectForKey:@"GameScore"];
}


- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
// ...
    if ([self checkFirstRun]) {
    // first run, lets create basic default values

        gamescore = [NSNumber numberWithInt:0];
        [self storeGlobalVars];
    } else {
        [self readGlobalVars];      
    }
// ...

Later in your application, after importing AppDelegate.h you can use the UIAppDelegate.gamescore to access the AppDelegate's property.

And you have to remember that gamescore is an NSNumber object, you have to manipulate it using NSNumber's numberWithInt and/or intValue.

The CheckFirstRun is needed because your user's device at application first run doesn't contain the default plist and the initial values, you have to create an initial set.

NSUserDefaults implicitly means a plist stored in your application bundle. You dont have to care, the framework will care how to access plist file — nzs, May 10 '13 at 06:41
Please see to SO answer how to see this plist file: http://stackoverflow.com/questions/1676938/easy-way-to-see-saved-nsuserdefaults — nzs, May 10 '13 at 06:42

score 0 · Answer 2 · answered May 10 '13 at 04:51

0

You can make AppDelegate variables and store it in them. There scope remains in the complete application until the application closes.

In AppDelegate.h for example

NSString *string;

@property(nonatomic, strong) NSString *string;

In AppDelegate.m

@synthesize string;

in applicationDidFinishLaunchingWithOptions

string = @"";

And then is your classes add #import "AppDelegate.h"

then in your code ((AppDelegate *)[UIApplication SharedApplication].Delegate).string = @"1";

answered May 10 '13 at 04:51

Ahmed Z.

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and no need to use plist at all – username0013 May 10 '13 at 05:00
but i need if player get some points in this game like 10 then again in next game it is 20 n soon now hav to add all these 10,20 for this it will not works – username0013 May 10 '13 at 05:05
you can use plist for that or you can NSUserDefaults for that to store it locally on device. – Ahmed Z. May 10 '13 at 05:08
if you got waht you were looking for please accept the answer.. thank you. :) – Ahmed Z. May 10 '13 at 05:10

Storing results after screen is disappear

2 Answers2

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