使用NSKeyedArchiver保存数据
- (NSMutableArray *)loadMarkersFromFilePath:(NSString *)filePath {
NSMutableArray *markers = nil;
if (filePath == nil || [filePath length] == 0 ||
[[NSFileManager defaultManager] fileExistsAtPath:filePath] == NO) {
markers = [[[NSMutableArray alloc] init] autorelease];
} else {
NSData *data = [[NSData alloc] initWithContentsOfFile:filePath];
NSKeyedUnarchiver *vdUnarchiver = [[NSKeyedUnarchiver alloc] initForReadingWithData:data];
markers = [vdUnarchiver decodeObjectForKey:kSaveKeyMarkerLines];
[vdUnarchiver finishDecoding];
[vdUnarchiver release];
[data release];
}
return markers;
}
- (void)saveMarkers:(NSMutableArray *)markers toFilePath:(NSString *)filePath {
NSMutableData *data = [[NSMutableData alloc] init];
NSKeyedArchiver *vdArchiver = [[NSKeyedArchiver alloc] initForWritingWithMutableData:data];
[vdArchiver encodeObject:markers forKey:kSaveKeyMarkerLines];
[vdArchiver finishEncoding];
[data writeToFile:filePath atomically:YES];
[vdArchiver release];
[data release];
}
==================================================================================
[NSString stringWithContentsOfFile:filepath encoding:NSUTF8StringEncoding error:nil];
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1
2 NSString *str = @"abc";
3 NSString *astr = @"efg";
4 NSArray *Array = [NSArray arrayWithObjects:str, astr, nil];
5
6 //Save
7 NSString *Path = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0]; NSString *filename = [Path stringByAppendingPathComponent:@"test"];
8 [NSKeyedArchiver archiveRootObject:Array toFile:filename];
9
10 str = @"a";
11 astr = @"";
12
13 //load
14 NSArray *arr = [NSKeyedUnarchiver unarchiveObjectWithFile: filename];
15 str = [arr objectAtIndex:0];
16 astr = [arr objectAtIndex:1];
17
18 NSLog(@"str:%@",str);
19 NSLog(@"astr:%@",astr);
20
21
22
23
24 NSString *str = @"abc";
25 NSString *astr = @"efg";
26 NSArray *Array = [NSArray arrayWithObjects:str, astr, nil];
27
28 //Save
29 NSUserDefaults *SaveDefaults = [NSUserDefaults standardUserDefaults];
30 [SaveDefaults setObject:Array forKey:@"SaveKey"];
31
32 str = @"a";
33 astr = @"";
34
35 //load
36 Array = [SaveDefaults objectForKey:@"SaveKey"];
37 str = [Array objectAtIndex:0];
38 astr = [Array objectAtIndex:1];
39 NSLog(@"str:%@",str);
40 NSLog(@"astr:%@",astr);
41
42
43
44
45
46 NSString *str = @"abc";
47 NSString *astr = @"efg";
48 NSArray *Array = [NSArray arrayWithObjects:str, astr, nil];
49
50 //Save
51 NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
52 NSString *documentsDirectory = [paths objectAtIndex:0];
53 if (!documentsDirectory) {
54 NSLog(@"Documents directory not found!");
55 }
56 NSString *appFile = [documentsDirectory stringByAppendingPathComponent:@"Savedatas.plist"];
57 [[NSArray arrayWithObjects:Array,nil] writeToFile:appFile atomically:NO];
58
59
60 //load
61 if([[NSFileManager defaultManager] fileExistsAtPath:appFile])
62 self.SaveDataArray = [NSMutableArray arrayWithContentsOfFile:appFile];
63 else
64 self.SaveDataArray = [NSMutableArray arrayWithContentsOfFile:[[NSBundle mainBundle] pathForResource:@"Savedatas" ofType:@"plist"]];
65 NSArray *strArray = [self.SaveDataArray objectAtIndex:0];
66
67 str = [strArray objectAtIndex:0];
68 astr = [strArray objectAtIndex:1];
69
70
71
72
73
74 //坛子里的，搬过来。。。。。
75 -(BOOL) writeApplicationData:(NSDictionary *)data writeFileName:(NSString *)fileName
76 {
77 NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
78 NSString *documentsDirectory = [paths objectAtIndex:0];
79 if (!documentsDirectory) {
80 NSLog(@"Documents directory not found!");
81 return NO;
82 }
83 NSString *appFile = [documentsDirectory stringByAppendingPathComponent:fileName];
84 return ([data writeToFile:appFile atomically:YES]);
85 }
86
87 -(id) readApplicationData:(NSString *)fileName
88 {
89 NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
90 NSString *documentsDirectory = [paths objectAtIndex:0];
91 NSString *appFile = [documentsDirectory stringByAppendingPathComponent:fileName];
92 NSDictionary *myData = [[[NSDictionary alloc] initWithContentsOfFile:appFile] autorelease];
93 return myData;
}