ios - 如何在 Objective C 中将数组数据从 iPhone 传递到 Apple Watch

Question

我必须开发一个苹果 watch 应用程序，其中我必须在苹果 watch 中显示一些表格 View 。对于此操作，我的 iPhone 中已经有核心数据，我可以从中检索到 NSArray 对象。但现在我想将它传递给 watch 套件扩展，那么它怎么可能呢？有人知道吗？

下面的函数以数组对象的形式返回核心日期获取的记录。

-(NSMutableArray *) getWatchHomeView
{

NSMutableArray *resultTracks = [[NSMutableArray alloc] init];
self.ongoingMapArray = [NSArray arrayWithArray:[[self fetchResultsForCompletedExpeditions:NO] fetchedObjects]];
NSLog(@"ongoingMapArray-- %lu",(unsigned long)[self.ongoingMapArray count]);
self.completedMapArray = [NSArray arrayWithArray:[[self fetchResultsForCompletedExpeditions:YES] fetchedObjects]];
NSLog(@"completedMapArray-- %lu",(unsigned long)[self.completedMapArray count]);

for (int i=0; i < self.completedMapArray.count; i++)
{
    WatchTable *watchTableRow = [[WatchTable alloc] init];
    Map *mapObject = [self.completedMapArray objectAtIndex:i];

    watchTableRow.trackName = [[NSString stringWithFormat:@"%@", [mapObject name]] uppercaseString];
    NSArray *arrPolylines = [NSArray arrayWithArray:[[self fetchPloylineForMaps:[mapObject name]] fetchedObjects]];

    if ([arrPolylines count] > 0) {
        double totalDis = [self getTotalDistanceFromPolylines:arrPolylines];
        watchTableRow.trackedDistance = [NSString stringWithFormat:@"%.2f km", totalDis];


        Polyline *firstPolyline = [arrPolylines lastObject];
        NSMutableArray *arrTimeData = (NSMutableArray*)firstPolyline.time;
        if ([arrTimeData count] > 0) {
            watchTableRow.trackedTime = [NSString stringWithFormat:@"%@ ago", [self getPausedTimeWithCreationDate:[arrTimeData lastObject]]];
        }else{
            watchTableRow.trackedTime = [NSString stringWithFormat:@"%@ ago", [self getPausedTimeWithCreationDate:firstPolyline.creationDate]];
        }
    }else{
        watchTableRow.trackedTime = [NSString stringWithFormat:@"%@ ago", [self getPausedTimeWithCreationDate:mapObject.creationDate]];
        watchTableRow.trackedDistance = [NSString stringWithFormat:@"0.00 Km"];
    }
    NSLog(@"watchTableRow = %@",watchTableRow);
    [resultTracks addObject:watchTableRow];

}

[[NSUserDefaults standardUserDefaults] setObject:resultTracks forKey:@"WatchHomeViewTableList"];

return resultTracks;
}

Answer 1

如果您使用的是 watchOS 1，则可以通过应用组在您的 watch 和 iOS 应用之间共享数据。

引用

• > Share Data in your Swift WatchKit Apps with App Groups
• > WATCHKIT: BEST PRACTICES FOR SHARING DATA BETWEEN YOUR WATCH AND IOS APP

编辑:

在 iphone 端，序列化你的数据。

NSData *encodedObject = [NSKeyedArchiver archivedDataWithRootObject:resultTracks];
NSUserDefaults *defaults = [[NSUserDefaults alloc]
    initWithSuiteName:@"group.com.example.mygroup"];
[defaults setObject:encodedObject forKey:@"WatchHomeViewTableList"];
[defaults synchronize];

并反序列化您的数据。

NSUserDefaults *defaults = [[NSUserDefaults alloc]
    initWithSuiteName:@"group.com.example.mygroup"];
NSData *encodedObject = [defaults objectForKey:@"WatchHomeViewTableList"];
NSMutableArray *resultTracks = [NSKeyedUnarchiver unarchiveObjectWithData:encodedObject];