iphone Development - pick unique image from array problem, syntax help -

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कोड: 

  // एक फ़ाइलनाम का चयन करें int numFileNames = [imageArray count]; Int चुना = arc4random ()% numFileNames; NSString * oneFilename = [छविअरे ऑब्जेक्टअटइंडएक्स: चुने];

धन्यवाद!

आपके NSMutableArray में एक त्रुटि है:

आपको इसे पहले इनिशियलाइज़ करना होगा। 

  NSMutableArray * imageArray = [[एनएसएमयूटीएबलएआरआरएआरओएल] आईएनएसटी];

;)

और यहां एक सुझाव है, यदि आपको जरूरी नहीं कि इंटरफ़ेस बिल्डर की सहायता की आवश्यकता हो, तो आप कोकोस 2 डी पर विचार करना चाह सकते हैं।

- चरण 3 के लिए रैंड () का उपयोग करके यादृच्छिक पिक करें, यह जांचने के लिए एक लूप बनाएं कि चयनित छवि पहले से ही एक में जोड़ दी गई है या नहीं सरणी (यह सरणी चुनी गई छवियों के लिए है), अगर यह सरणी में है, तो फिर से यादृच्छिक रूप से यादृच्छिक होकर, यदि नहीं तो उठाए गए सरणी में जोड़ें, और ball1.image = [UIImage imageNamed: [imageArray objectatindex: randomNum]];


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