永远不会读取在初始化期间存储到'beaconsData'的值

Question

我将＆＃34;值存储到＆＃39; beaconsData＆＃39;在初始化期间永远不会读取＆＃34;标记行的消息，我不太明白为什么会发生这种情况。

- (void)locationManager:(KTKLocationManager *)locationManager didRangeBeacons:(NSArray *)beacons
{
    //NSLog(@"Ranged beacons count: %lu", [beacons count]);
    _beaconKontaktArr = [[NSMutableArray alloc] init];

    for (CLBeacon *beacon in beacons) {
        NSDictionary *beaconsData = [[NSDictionary alloc] init]; //problem is there
        KTKBeacon *beaconData = [self _getDataForBeacon:beacon];
        if (beaconData)
        {
            beaconsData = @{@"beacon": beacon, @"ktkBeacon": beaconData};

            [_beaconKontaktArr addObject:beaconsData];
        }
    }
}

Answer 1

在定义从未使用过的变量时，将对象添加到beaconsData，然后在if循环中用新数据覆盖空字典。该变量应该移动到循环内部。

- (void)locationManager:(KTKLocationManager *)locationManager didRangeBeacons:(NSArray *)beacons {
    _beaconKontaktArr = [[NSMutableArray alloc] init];

    for (CLBeacon *beacon in beacons) {
        KTKBeacon *beaconData = [self _getDataForBeacon:beacon];
        if (beaconData) {
            NSDictionary *beaconsData = @{@"beacon": beacon, @"ktkBeacon": beaconData};
            [_beaconKontaktArr addObject:beaconsData];
        }
    }
}