How do I access floats from a dictionary of floats?

Question

I have a property list (`Data.plist`) that contains an array of two dictionaries. Each dictionary is filled with key names (`Factor 1`, `Factor 2`, etc) and floats (`0.87`, `1.15`, etc.). I am trying to access the numbers stored in the dictionary. First I load the dictionary using: ``` NSString *path = [[NSBundle mainBundle] bundlePath]; NSString *finalPath = [path stringByAppendingPathComponent:@"Data.plist"]; NSArray *plistData = [[NSArray arrayWithContentsOfFile:finalPath] retain]; NSDictionary *dictionaryOne = [plistData objectAtIndex:0]; ``` Actually accessing the numbers stored is where I'm having a problem: ``` Float32 conversionFactor = [scyToLCMMen objectForKey:"Factor 50"]; ``` I'm getting the error: "`incompatible types in initialization`". What am I doing wrong? Is it not a `Float32`?

Accepted Answer

Objective-c containers can only hold obj-c types, so what you get is not a float for sure. What you probably have is NSNumber object and you need to "extract" plain float value from it:

```
Float32 conversionFactor = [[scyToLCMMen objectForKey:"Factor 50"] floatValue];
```

How do I access floats from a dictionary of floats?

Solution

Problem