iphone 常用函数汇总

1：将字典中的键值对赋值给对象的各个成员变量。关键字：setValuesForKeysWithDictionary

1.1先定义一个类，该类为Quotation 声明如下：

@interface Quotation : NSObject {

}

@property (nonatomic, retain) NSString *character;
@property (nonatomic, assign) NSInteger act;
@property (nonatomic, assign) NSInteger scene;
@property (nonatomic, retain) NSString *quotation;
@end

@implementation Quotation

@synthesize character, act, scene, quotation;

- (void)dealloc {
[character release];
[quotation release];
[super dealloc];
}

@end

1.2 然后自动从字典中将值取到对象中。使用了“setValuesForKeysWithDictionary”这么一个函数，代码如下：

NSArray *quotationDictionaries = [playDictionary objectForKey:@"quotations"];

NSMutableArray *quotations = [NSMutableArray arrayWithCapacity:[quotationDictionaries count]];

for (NSDictionary *quotationDictionary in quotationDictionaries) {

Quotation *quotation = [[Quotation alloc] init];
[quotation setValuesForKeysWithDictionary:quotationDictionary];

[quotations addObject:quotation];
[quotation release]; }