plist儲存資料

如何利用plist儲存資料？

做了一個簡單的測試demo在github上：https://github.com/web8246/TestPlist.git






教學已經很多前輩有介紹了，

這邊主要是測試一些不太有人說的功能，例如刪除，和儲存資料類別物件，


appdelegate

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {

    // Override point for customization after application launch.

    //把mylist這個檔案複製到documents底下，這樣在沙盒內儲存

    

    NSFileManager *manager = [[NSFileManager alloc] init];

    NSString *path = [[NSBundle mainBundle] pathForResource:@"myList" ofType:@"plist"];

    NSString *copy = [NSString stringWithFormat:@"%@/Documents/myList.plist",NSHomeDirectory()];

    

    if (![manager fileExistsAtPath:copy]) {

        [manager copyItemAtPath:path toPath:copy error:nil];

    }

    

    return YES;

}

另外在viewcontroller裡面：

- (void)viewDidLoad {

    [super viewDidLoad];

    listDict = [NSMutableDictionary new];

    date1 = [NSMutableDictionary new];

    addItemDic = [NSMutableDictionary new];

    

    // Do any additional setup after loading the view, typically from a nib.

    

    //先取得已經複製好的路徑

    NSString *path = [NSString stringWithFormat:@"%@/Documents/myList.plist",NSHomeDirectory()];

    //read

    listDict = [NSMutableDictionary dictionaryWithContentsOfFile:path];

    date1 = [listDict objectForKey:@"date1"];

    NSString *major= date1[major];

    NSLog(@"major: %@",major);

    

    //write

    NSLog(@"listDic: %@",listDict);

    

    

}

- (IBAction)addBtnAction:(id)sender {

    

    NSString *path = [NSString stringWithFormat:@"%@/Documents/myList.plist",NSHomeDirectory()];

    [date1 setValue:@"898" forKey:@"major"];

    [date1 setValue:@"ggf" forKey:@"minor"];

    //在plist檔案，沒有設置這個key，但是也可以動態加入，讓他存入，刪除也是一樣，都是依照key，value

    [date1 setValue:@"ooj" forKey:@"klo"];

    //展示包入Singleton資料物件

    MyItem *item = [MyItem new];

    item.stringA = @"ppokok";

    NSMutableDictionary *newDic = [NSMutableDictionary new];

    [newDic setObject:item forKey:@"kkk"];

    [date1 setObject:newDic forKey:@"newDic"];

    

    

    [listDict writeToFile:path atomically:YES];

    NSLog(@"listDic: %@",listDict);

    

    

}