Reading plist in iOS program - ios

Question

As i'm beginner iOS, i just want to read a simple property list file (plist) in my program but it shows me the message "Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[ViewController dataFilePath]: unrecognised selector sent to instance 0x15638660'". Kindly help me out where I had issue in program.
(.h file)
#interface ViewController : UIViewController {
NSString *listPath;
NSMutableArray *array;
}
- (NSString *) dataFilePath;
- (void) writePlist;
- (void) readPlist;
(.m file)
#interface ViewController ()
#end
#implementation ViewController
- (void)viewDidLoad {
UIButton *readBtn = [UIButton buttonWithType:UIButtonTypeRoundedRect]; readBtn.frame = CGRectMake(110,110,72,39);
[readBtn setTitle:#"Read" forState:UIControlStateNormal];
[readBtn addTarget:self action:#selector(readPlist)forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:readBtn];
UIButton *writeBtn = [UIButton buttonWithType:UIButtonTypeRoundedRect];
writeBtn.frame = CGRectMake(110,210,72,39);
[writeBtn setTitle:#"Write" forState:UIControlStateNormal];
[writeBtn addTarget:self action:#selector(writePlist) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:writeBtn];
[super viewDidLoad];
}
- (NSString *)DocDirectories {
NSArray *path = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask, YES);
NSString *DocumentDirectory=[path objectAtIndex:0];
return [DocumentDirectory stringByAppendingString:#"Data.plist"];
}
- (void)writePlist
{
NSMutableArray *anArray = [[NSMutableArray alloc]init];
[anArray addObject:#"A"];
[anArray addObject:#"B"];
[anArray writeToFile:[self dataFilePath] atomically:YES];
}
- (void)readPlist
{
NSString *filePath = [self dataFilePath];
if ([[NSFileManager defaultManager] fileExistsAtPath:filePath]) {
NSArray *array = [[NSArray alloc] initWithContentsOfFile:filePath];
NSLog(#"%#\n", array);
NSLog(#"%#\n",filePath);
// [array release];
}
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
#end
}

Answer 1

you view controller not has method dataFilePath.
you need to call function DocDirectories.
- (void)writePlist
{
NSMutableArray *anArray = [[NSMutableArray alloc]init];
[anArray addObject:#"A"];
[anArray addObject:#"B"];
[anArray writeToFile:[self DocDirectories] atomically:YES];
}
Hope this will help you.

Answer 2

Check this
NSString *plistPath = [[NSBundle mainBundle] pathForResource:#“Data” ofType:#"plist"];
NSArray *arrData = [NSArray arrayWithContentsOfFile:plistPath];

Answer 3

Use this ,you will get
NSDictionary *dictionary = [NSDictionary dictionaryWithContentsOfFile:[[NSBundle mainBundle] pathForResource:#"Info" ofType:#"plist"]];
NSLog(#"dictionary = %#", dictionary);
NSArray *array = [dictionary objectForKey:#"CFBundleSupportedPlatforms"];
NSLog(#"array = %#", array);

Answer 4

Where is your dataFilePath function?
You should replace the function dataFilePath with DocDirectories.
try this:
- (NSString *)dataFilePath {
return [self DocDirectories];}
Add this function to your viewController.m.This issue is the compiler can't find the function:dataFilePath when the app is running, because you only decelerate dataFilePath in a .h file, you should also implement it in .m file.