完整代码托管：https://github.com/1042710553/HelloKit.git /************************/plist/************************///path 读取当前程序定义好的provinces.plist省份城市文件  //array数组的名称就叫province  NSString *path = [[NSBundle mainBundle] pathForResource:@"provinces" ofType:@"plist"];  NSDictionary *data = [NSDictionary dictionaryWithContentsOfFile:path];  self.provincesContent = [NSArray arrayWithArray:[data objectForKey:@"province"]];//沙盒路径plist文件的读取。//注意，如果想添加新的数据，需要NSMutable类型的NSArray *patharray = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);  NSString *path =  [patharray objectAtIndex:0];  NSString *filepath=[path stringByAppendingPathComponent:@"provinces.plist"]; NSMutableArray *rootArray = [NSMutableArray arrayWithContentsOfFile:filepath]; /************************/NSUserDefaults/************************/ //NSUserDefaults读取 //获取标准函数对象 //通过对象获取名称下NSMutableDictionary数据 NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults]; NSMutableDictionary *defaultcoordinate = [defaults objectForKey:@"default_coordinate"]; NSString *currentCity = [defaultcoordinate objectForKey:@"c_name"]; //NSUserDefaults写入，更新 //1添加id对象类型数据 //2获取对象类型数据 [defaults setObject:@"kaka" forKey:@"newdata"]; [defaults objectForKey:@"newdata"]; [defaults setDouble:2013 forKey:@"double"]; [defaults doubleForKey:@"double"]; [defaults setBool:NO forKey:@"BOOL"]; [defaults boolForKey:@"BOOL"]; [defaults setInteger:12 forKey:@"int"]; [defaults integerForKey:@"int"]; [defaults setFloat:0.23 forKey:@"float"]; [defaults floatForKey:@"float"]; //NSUserDefaults删除 [defaults removeObjectForKey:@"newdata"]; //操作之后记得Synchronize同步操作，否则偶然会因为别的线程占大量内存而没有保存成功 [defaults synchronize];