转自http://zani.iteye.com/blog/1431239
.h文件
#import@interface MyObject : NSObject{ NSNumber* lowValue; NSNumber* highValue; NSString* titleString;}@property(nonatomic, retain)NSNumber* lowValue;@property(nonatomic, retain)NSNumber* highValue;@property(nonatomic, retain)NSString* titleString;@end
.m
#import "MyObject.h"@implementation MyObject@synthesize lowValue, highValue, titleString;- (void)encodeWithCoder:(NSCoder *)encoder { [encoder encodeObject:self.lowValue forKey:@"lowValue"]; [encoder encodeObject:self.highValue forKey:@"highValue"]; [encoder encodeObject:self.titleString forKey:@"titleString"];}- (id)initWithCoder:(NSCoder *)decoder { if(self = [super init]) { self.lowValue = [decoder decodeObjectForKey:@"lowValue"]; self.highValue = [decoder decodeObjectForKey:@"highValue"]; self.titleString = [decoder decodeObjectForKey:@"titleString"]; } return self;}@end 保存单个MyObject方法:
- (void)saveCustomObject:(MyObject *)obj { NSData *myEncodedObject = [NSKeyedArchiver archivedDataWithRootObject:obj]; NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults]; [defaults setObject:myEncodedObject forKey:@"myEncodedObjectKey"];}- (MyObject *)loadCustomObjectWithKey:(NSString *)key { NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults]; NSData *myEncodedObject = [defaults objectForKey:key]; MyObject *obj = (MyObject *)[NSKeyedUnarchiver unarchiveObjectWithData: myEncodedObject]; return obj;}保存： MyObject* testObj = [[MyObject alloc] init]; testObj.lowValue =[NSNumber numberWithFloat:122.2 ]; testObj.highValue = [NSNumber numberWithFloat:19888 ]; testObj.titleString = @“baoyu”;读取： MyObject* obj = [self loadCustomObjectWithKey:@"myEncodedObjectKey"]; NSLog(@"%f, %f, %@", [obj.lowValue floatValue], [obj.highValue floatValue], obj.titleString); 保存多个MyObject方法：
保存： NSMutableArray* array = [[NSMutableArray alloc] init]; for(int i=0; i<3; i++) { MyObject* testObj = [[MyObject alloc] init]; testObj.lowValue =[NSNumber numberWithFloat:122.2+i ]; testObj.highValue = [NSNumber numberWithFloat:19888+i ]; testObj.titleString = [NSString stringWithFormat:@"BAOYU%d", i]; [array addObject:testObj]; } [[NSUserDefaults standardUserDefaults] setObject:[NSKeyedArchiver archivedDataWithRootObject:array] forKey:@"myarray"];读取： NSData* data = [[NSUserDefaults standardUserDefaults] objectForKey:@"myarray"]; NSArray *oldSavedArray = [NSKeyedUnarchiver unarchiveObjectWithData:data]; for(MyObject* obj in oldSavedArray) { NSLog(@"%f, %f, %@", [obj.lowValue floatValue], [obj.highValue floatValue], obj.titleString); }