将字典中的数据保存到plist文件中

将字典中的数据保存到plist文件中，其实非常的简单，用到了这个库文件

另外只要加上两句代码就可以实现了：

NSFileManager *fm = [NSFileManager defaultManager];

    if ([fm createFileAtPath:fileName contents:nil attributes:nil] ==YES) {

        

    [cityDic writeToFile:fileName atomically:YES];

建立一个单视图的工程

具体的代码如下：

HHLViewController.h

 #import

 @interface HHLViewController : UIViewController

 {
     NSArray *cityArray;
     NSArray *pickerArray;
     NSDictionary *cityDic;
 }

 - (IBAction)buttonPressed:(id)sender;

 @end

HHLViewController.m

 #import "HHLViewController.h"

 @interface HHLViewController ()

 @end

 @implementation HHLViewController

 - (void)viewDidLoad
 {
     [super viewDidLoad];
     // Do any additional setup after loading the view, typically from a nib.
     NSString *beijing = @"101010100";
     NSString *tianjin = @"101030100";
     NSString *shanghai = @"101020100";
     NSString *shijiazhuang = @"101090101";
     NSString *zhengzhou = @"101180101";
     NSString *hefei = @"101220101";
     NSString *hangzhou = @"101210101";
     NSString *chongqing = @"101040100";
     NSString *fuzhou = @"101230101";
     NSString *lanzhou = @"101160101";
     NSString *guangzhou = @"101280101";
     NSString *nanning = @"101300101";
     NSString *guiyang = @"101260101";
     NSString *kunming = @"101290101";
     NSString *huhehaote = @"101080101";
     NSString *nanchang = @"101240101";
     NSString *wuhan = @"101200101";
     NSString *chengdu = @"101270101";
     NSString *yinchuan = @"101170101";
     NSString *xining = @"101150101";
     NSString *jinan = @"101120101";
     NSString *xian = @"101110101";
     NSString *taiyuan = @"101100101";
     NSString *wulumuqi = @"101130101";
     NSString *lasa = @"101140101";
     NSString *taibei = @"101340101";
     NSString *haikou = @"101310101";
     NSString *changsha = @"101250101";
     NSString *nanjing = @"101190101";
     NSString *haerbin = @"101050101";
     NSString *changchun = @"101060101";
     NSString *shenyang = @"101070101";
     cityArray = [[NSArray alloc] initWithObjects:beijing,tianjin,shanghai,shijiazhuang,zhengzhou,hefei,hangzhou,chongqing,fuzhou,lanzhou,guangzhou,nanning,guiyang,kunming,huhehaote,nanchang,wuhan,chengdu,yinchuan,xining,jinan,xian,taiyuan,wulumuqi,lasa,taibei,haikou,changsha,nanjing,haerbin,changchun,shenyang,nil];
     pickerArray = [[NSArray alloc] initWithObjects:@"北京",@"天津",@"上海",@"石家庄",@"郑州",@"合肥",@"杭州", @"重庆",@"福州",@"兰州",@"广州",@"南宁",@"贵阳",@"昆明",@"呼和浩特",@"南昌",@"武汉",@"成都",@"银川",@"西宁",@"济南",@"西安",@"太原",@"乌鲁木齐",@"拉萨",@"台北",@"海口",@"长沙",@"南京",@"哈尔滨",@"长春",@"沈阳",nil];
     cityDic =[[NSDictionary alloc] initWithObjects:cityArray forKeys:pickerArray];
 }

 - (void)didReceiveMemoryWarning
 {
     [super didReceiveMemoryWarning];
     // Dispose of any resources that can be recreated.
 }

 - (IBAction)buttonPressed:(id)sender {
     //把数据保存到沙盒里的plist文件
     NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
     NSString *plistPath1= [paths objectAtIndex:0];

     NSLog(@"%@",plistPath1);
     //得到完整的路径名
     NSString *fileName = [plistPath1 stringByAppendingPathComponent:@"cityCode.plist"];
     //NSMutableDictionary *myDic = [[NSMutableDictionary alloc]init];
     //[myDic setValuesForKeysWithDictionary:cityDic];
     NSFileManager *fm = [NSFileManager defaultManager];
     if ([fm createFileAtPath:fileName contents:nil attributes:nil] ==YES) {

     [cityDic writeToFile:fileName atomically:YES];
     NSLog(@"文件写入完成");
     }
 }

 @end

运行后的效果如下图所示：

今天终于把这些知识点搞明白了，希望能够和大家一块进步。