这是我第一次发帖，所以如果我错过一两个指南，我会道歉。随意打电话给我。无论如何。我目前正在慢慢地尝试学习objective-c和iOS / xcode，因此我正在做大量的教程。我遇到过一个并且一直在努力，但是想尝试挑战自己并做一些调整。最终这是一个学习过程。所以我的主要问题如下：
在使用Xcode的objective-C中，如何使用plist替换NSObjects的自定义类？
以下是代码片段，我正在尝试找出如何替换具有相同信息的plist：
@implementation RecipeBookViewController {
NSArray *recipes;
}
@synthesize tableView = _tableView;
- (void)viewDidLoad
{
[super viewDidLoad];
// Initialize table data
// recipes = [NSArray arrayWithObjects:@"Egg Benedict", @"Mushroom Risotto", @"Full Breakfast", @"Hamburger", @"Ham and Egg Sandwich", @"Creme Brelee", @"White Chocolate Donut", @"Starbucks Coffee", @"Vegetable Curry", @"Instant Noodle with Egg", @"Noodle with BBQ Pork", @"Japanese Noodle with Pork", @"Green Tea", @"Thai Shrimp Cake", @"Angry Birds Cake", @"Ham and Cheese Panini", nil];
Recipe *recipe1 = [Recipe new];
recipe1.name = @"Egg Benedict";
recipe1.prepTime = @"30 min";
recipe1.imageFile = @"egg_benedict.jpg";
recipe1.ingredients = [NSArray arrayWithObjects:@"2 fresh English muffins", @"4 eggs", @"4 rashers of back bacon", @"2 egg yolks", @"1 tbsp of lemon juice", @"125 g of butter", @"salt and pepper", nil];
Recipe *recipe2 = [Recipe new];
recipe2.name = @"Mushroom Risotto";
recipe2.prepTime = @"30 min";
recipe2.imageFile = @"mushroom_risotto.jpg";
recipe2.ingredients = [NSArray arrayWithObjects:@"1 tbsp dried porcini mushrooms", @"2 tbsp olive oil", @"1 onion, chopped", @"2 garlic cloves", @"350g/12oz arborio rice", @"1.2 litres/2 pints hot vegetable stock", @"salt and pepper", @"25g/1oz butter", nil];
Recipe *recipe3 = [Recipe new];
recipe3.name = @"Full Breakfast";
recipe3.prepTime = @"20 min";
recipe3.imageFile = @"full_breakfast.jpg";
recipe3.ingredients = [NSArray arrayWithObjects:@"2 sausages", @"100 grams of mushrooms", @"2 rashers of bacon", @"2 eggs", @"150 grams of baked beans", @"Vegetable oil", nil];
Recipe *recipe4 = [Recipe new];
recipe4.name = @"Hamburger";
recipe4.prepTime = @"30 min";
recipe4.imageFile = @"hamburger.jpg";
recipe4.ingredients = [NSArray arrayWithObjects:@"400g of ground beef", @"1/4 onion (minced)", @"1 tbsp butter", @"hamburger bun", @"1 teaspoon dry mustard", @"Salt and pepper", nil];
Recipe *recipe5 = [Recipe new];
recipe5.name = @"Ham and Egg Sandwich";
recipe5.prepTime = @"10 min";
recipe5.imageFile = @"ham_and_egg_sandwich.jpg";
recipe5.ingredients = [NSArray arrayWithObjects:@"1 unsliced loaf (1 pound) French bread", @"4 tablespoons butter", @"2 tablespoons mayonnaise", @"8 thin slices deli ham", @"1 large tomato, sliced", @"1 small onion", @"8 eggs", @"8 slices cheddar cheese", nil];
Recipe *recipe6 = [Recipe new];
recipe6.name = @"Creme Brelee";
recipe6.prepTime = @"1 hour";
recipe6.imageFile = @"creme_brelee.jpg";
recipe6.ingredients = [NSArray arrayWithObjects:@"1 quart heavy cream", @"1 vanilla bean, split and scraped", @"1 cup vanilla sugar", @"6 large egg yolks", @"2 quarts hot water", nil];
Recipe *recipe7 = [Recipe new];
recipe7.name = @"White Chocolate Donut";
recipe7.prepTime = @"45 min";
recipe7.imageFile = @"white_chocolate_donut.jpg";
recipe7.ingredients = [NSArray arrayWithObjects:@"3 1/4 cups flour", @"2 teaspoons baking powder", @"1/4 teaspoon salt", @"2 beaten eggs", @"2/3 cup sugar", @"2 ounces melted white chocolate", @"1/2 cup milk", nil];
Recipe *recipe8 = [Recipe new];
recipe8.name = @"White Chocolate Mocha";
recipe8.prepTime = @"5 min";
recipe8.imageFile = @"starbucks_coffee.jpg";
recipe8.ingredients = [NSArray arrayWithObjects:@"2/3 cup whole milk", @"6 tablespoons white chocolate chips", @"coffee", @"whipped cream", nil];
Recipe *recipe9 = [Recipe new];
recipe9.name = @"Vegetable Curry";
recipe9.prepTime = @"30 min";
recipe9.imageFile = @"vegetable_curry.jpg";
recipe9.ingredients = [NSArray arrayWithObjects:@"1 tablespoon olive oil", @"1 onion, chopped", @"2 cloves garlic", @"2 1/2 tablespoons curry powder", @"2 quarts hot water", nil];
Recipe *recipe10 = [Recipe new];
recipe10.name = @"Instant Noodle with Egg";
recipe10.prepTime = @"8 min";
recipe10.imageFile = @"instant_noodle_with_egg.jpg";
recipe10.ingredients = [NSArray arrayWithObjects:@"1 pack of Instant Noodle", @"2 eggs", nil];
Recipe *recipe11 = [Recipe new];
recipe11.name = @"Noodle with BBQ Pork";
recipe11.prepTime = @"20 min";
recipe11.imageFile = @"noodle_with_bbq_pork.jpg";
recipe11.ingredients = [NSArray arrayWithObjects:@"1 pack of Instant Noodle", @"BBQ pork", @"Salt and Pepper", nil];
Recipe *recipe12 = [Recipe new];
recipe12.name = @"Japanese Noodle with Pork";
recipe12.prepTime = @"20 min";
recipe12.imageFile = @"japanese_noodle_with_pork.jpg";
recipe12.ingredients = [NSArray arrayWithObjects:@"1 pack of Japanese Noodle", @"2 green onions", @"2 garlic cloves, minced", @"4 boneless pork loin chops", nil];
Recipe *recipe13 = [Recipe new];
recipe13.name = @"Green Tea";
recipe13.prepTime = @"5 min";
recipe13.imageFile = @"green_tea.jpg";
recipe13.ingredients = [NSArray arrayWithObjects:@"Green tea", nil];
Recipe *recipe14 = [Recipe new];
recipe14.name = @"Thai Shrimp Cake";
recipe14.prepTime = @"1.5 hours";
recipe14.imageFile = @"thai_shrimp_cake.jpg";
recipe14.ingredients = [NSArray arrayWithObjects:@"8 oz (250g) peeled and deveined raw shrimp", @"2 tablespoons red curry paste", @"1 large egg", @"2 teaspoon fish sauce", @"1 tablespoon sugar", @"2 tablespoons coconut milk", @"2 tablespoons roughly chopped Thai basil leaves", nil];
Recipe *recipe15 = [Recipe new];
recipe15.name = @"Angry Birds Cake";
recipe15.prepTime = @"4 hours";
recipe15.imageFile = @"angry_birds_cake.jpg";
recipe15.ingredients = [NSArray arrayWithObjects:@"12 tablespoons (1 1/2 sticks) unsalted butter", @"2 1/2 cups all-purpose flour", @"1 tablespoon baking powder", @"1 teaspoon salt", @"1 3/4 cups sugar", @"2 large eggs, plus 3 large egg yolks", @"1 cup of milk", nil];
Recipe *recipe16 = [Recipe new];
recipe16.name = @"Ham and Cheese Panini";
recipe16.prepTime = @"10 min";
recipe16.imageFile = @"ham_and_cheese_panini.jpg";
recipe16.ingredients = [NSArray arrayWithObjects:@"2 tablespoons unsalted butter", @"4 cups thinly sliced shallots", @"2 teaspoons fresh thyme", @"1/4 cup grainy Dijon mustard", @"8 slices rustic white bread", @"8 slices Gruyere cheese", @"8 ounces sliced cooked ham", nil];
recipes = [NSArray arrayWithObjects:recipe1, recipe2, recipe3, recipe4, recipe5, recipe6, recipe7, recipe8, recipe9, recipe10, recipe11, recipe12, recipe13, recipe14, recipe15, recipe16, nil];
}
它还引用了自定义类Recipe.h和Recipe.m，代码如下：
recipe.h
#import <Foundation/Foundation.h>
@interface Recipe : NSObject
@property (nonatomic, strong) NSString *name; // name of recipe
@property (nonatomic, strong) NSString *prepTime; // preparation time
@property (nonatomic, strong) NSString *imageFile; // image filename of recipe
@property (nonatomic, strong) NSArray *ingredients; // ingredients
@end
Recipe.m
#import "Recipe.h"
@implementation Recipe
@synthesize name;
@synthesize prepTime;
@synthesize imageFile;
@synthesize ingredients;
@end
我老实说不确定它是否可能这样做，但是我希望能够将所有这些信息放入plist中以便于编辑，而不是直接在其中一个.m文件中使用笨重的代码。任何和所有的帮助将非常感激！
谢谢！
答案 0 :(得分：0)
由于所有属性都是属性列表对象（字符串和数组），因此可以将对象转换为字典数组。只需遍历食谱，并从每个对象创建一个字典：
NSMutableArray *recipeArray = [NSMutableArray new];
For (Recipe *obj in recipes) {
NSMutableDictionary *dict = [NSMutableDictionary new];
[dict setObject:obj.name forKey:@"name"];
[dict setObject:obj.prepTime forKey:@"prepTime"];
[dict setObject:obj.imageFile forKey:@"imageFile"];
[dict setObject:obj.ingredients forKey:@"ingredients"];
[recipeArray addObject:dict];
}
这将为您提供一系列字典，其中包含与对象相同的信息。您可以使用数组方法writeToURL：atomically：。
将其写入plist文件答案 1 :(得分：0)
选择项目，转到文件 - ＆gt; NewFile - ＆gt;选择资源 - ＆gt;选择Plist给出一些名字＆amp;单击确定。 现在将数据添加到您的plist。
使用以下代码：
dataArray = [[NSArray alloc] initWithContentsOfFile:[[NSBundle mainBundle] pathForResource:@"your Plistname" ofType:@"plist"]];
在任何您想要的地方使用此数组。