弹出的代码没有错误，当应用程序在模拟器中加载时，它是完全空白的。我认为这可能是 PList 数据未正确填充到数组中的问题，但我不确定，因为即使页眉/页脚也没有显示。
这是其中一个 Plist 的示例（总共有 4 个 plist，都具有相同的结构，只是分配给不同的对象）：
以下是分配给数组的对象之一的代码，然后将这些数组的各个部分放入单独的数组中，以跟踪它们的缩略图和标签名称：
//BEGIN INGREDIENT ITEM DATA
NSString *ingredientItemsPath = [[NSBundle mainBundle] pathForResource:@"IngredientList" ofType:@"plist"];
NSMutableArray *ingredientItemsArray = [[NSMutableArray alloc] initWithContentsOfFile:ingredientItemsPath];
/*NSString *ingredientItemsPath = [[NSBundle mainBundle] pathForResource:@"ingredientList" ofType:@"plist"];
NSDictionary *ingredientItemsDict = [[NSDictionary alloc] initWithContentsOfFile:ingredientItemsPath];
NSArray *ingredientItemsArray = [NSArray arrayWithArray:[ingredientItemsDict objectForKey:@"Root"]];*/
NSMutableArray *cCalcIngredientObjects = [[NSMutableArray alloc] init];
for (int index=0; index < ingredientItemsArray.count; index++)
{
CCalcIngredients* ingredient = [[CCalcIngredients alloc] init]; // This is your object
NSDictionary* ingredientDict = (NSDictionary*)ingredientItemsArray[index];
ingredient.name = ingredientDict[@"name"];
ingredient.thumbnail = ingredientDict[@"thumbnail"];
NSDictionary* ingredientNutritionDict = (NSDictionary*)ingredientDict[@"nutrition"];
ingredient.calories = ingredientNutritionDict[@"calories"];
ingredient.totalFat = ingredientNutritionDict[@"totalFat"];
ingredient.saturatedFat = ingredientNutritionDict[@"saturatedFat"];
ingredient.transFat = ingredientNutritionDict[@"transFat"];
ingredient.cholesterol = ingredientNutritionDict[@"cholesterol"];
ingredient.sodium = ingredientNutritionDict[@"sodium"];
ingredient.totalCarbs = ingredientNutritionDict[@"totalCarbs"];
ingredient.dietaryFiber = ingredientNutritionDict[@"dietaryFiber"];
ingredient.proteins = ingredientNutritionDict[@"proteins"];
[cCalcIngredientObjects addObject:ingredient];
}
//END INGREDIENT ITEM DATA
NSLog(@"The ingredient items are %@", cCalcIngredientObjects);
//array of photos
self.photos = [[NSMutableArray alloc] init];
for(CCalcMeals* item in cCalcMenuObjects){
[self.photos addObject:item.thumbnail];
}
for(CCalcMeat* meat in cCalcMeatObjects){
[self.photos addObject:meat.thumbnail];
}
for(CCalcSalsa* salsa in cCalcSalsaObjects){
[self.photos addObject:salsa.thumbnail];
}
for(CCalcIngredients* ingredient in cCalcIngredientObjects){
[self.photos addObject:ingredient.thumbnail];
}
NSLog(@"photos %@", self.photos);
当我针对我创建的所有数组运行它时，NSLog 会打印出来：
我试图弄清楚为什么这只是一个空白的黑色模拟器屏幕，并弄清楚我的 Plist 数据发生了什么以及它是否正确构建。