保存数据的一系列方法
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/*=======================================================NSKeyedArchiver========================================================*/NSString *str = @"abc";NSString *astr = @"efg";NSArray *Array = [NSArray arrayWithObjects:str, astr, nil]; //SaveNSString *Path = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0]; NSString *filename = [Path stringByAppendingPathComponent:@"test"];[NSKeyedArchiver archiveRootObject:Array toFile:filename]; str = @"a";astr = @""; //loadNSArray *arr = [NSKeyedUnarchiver unarchiveObjectWithFile: filename];str = [arr objectAtIndex:0];astr = [arr objectAtIndex:1]; NSLog(@"str:%@",str);NSLog(@"astr:%@",astr); /*=======================================================NSUserDefaults========================================================*/NSString *str = @"abc";NSString *astr = @"efg";NSArray *Array = [NSArray arrayWithObjects:str, astr, nil]; //SaveNSUserDefaults *SaveDefaults = [NSUserDefaults standardUserDefaults];[SaveDefaults setObject:Array forKey:@"SaveKey"]; str = @"a";astr = @""; //loadArray = [SaveDefaults objectForKey:@"SaveKey"];str = [Array objectAtIndex:0];astr = [Array objectAtIndex:1];NSLog(@"str:%@",str);NSLog(@"astr:%@",astr); /*=======================================================writeToFile:========================================================*/NSString *str = @"abc";NSString *astr = @"efg";NSArray *Array = [NSArray arrayWithObjects:str, astr, nil]; //SaveNSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);NSString *documentsDirectory = [paths objectAtIndex:0];if (!documentsDirectory) { NSLog(@"Documents directory not found!");}NSString *appFile = [documentsDirectory stringByAppendingPathComponent:@"Savedatas.plist"];[[NSArray arrayWithObjects:Array,nil] writeToFile:appFile atomically:NO]; //loadif([[NSFileManager defaultManager] fileExistsAtPath:appFile]) self.SaveDataArray = [NSMutableArray arrayWithContentsOfFile:appFile]; else self.SaveDataArray = [NSMutableArray arrayWithContentsOfFile:[[NSBundle mainBundle] pathForResource:@"Savedatas" ofType:@"plist"]];NSArray *strArray = [self.SaveDataArray objectAtIndex:0]; str = [strArray objectAtIndex:0];astr = [strArray objectAtIndex:1]; //坛子里的，搬过来。。。。。-(BOOL) writeApplicationData:(NSDictionary *)data writeFileName:(NSString *)fileName{ NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); NSString *documentsDirectory = [paths objectAtIndex:0]; if (!documentsDirectory) { NSLog(@"Documents directory not found!"); return NO; } NSString *appFile = [documentsDirectory stringByAppendingPathComponent:fileName]; return ([data writeToFile:appFile atomically:YES]);} -(id) readApplicationData:(NSString *)fileName{ NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); NSString *documentsDirectory = [paths objectAtIndex:0]; NSString *appFile = [documentsDirectory stringByAppendingPathComponent:fileName]; NSDictionary *myData = [[[NSDictionary alloc] initWithContentsOfFile:appFile] autorelease]; return myData;}