When passing Strings
from an activity to a fragment using
Bundle args = new Bundle();
args.putString(key, value);
fragment.setArguments(args);
I can also pass potential null
and receive it in the fragment with
String string = getArguments().getString(key);
I'd also like to pass nullable Float
s and Integer
s but the corresponding putInt()
and putFloat()
methods don't allow passing null
. I am now passing additional flags as arguments that indicate whether a value is set or not but that seems rather clumsy in comparison. Is there a better way to pass potential null values (preferably available in API level 14 and later)?
I prefer to skip putting something in case of null
into bundle.
In fragment just check Bundle.containsKey(String key)
, if doesn't means null
.
This is the Kotlin version of @Eugene Krivenjas textual solution - just in case someone prefers copy/pasting to thinking ;)
private fun Bundle.putLongOrSkip(key: String?, value: Long?) =
apply { value?.let { putLong(key, value) } }
private fun Bundle.getLongOrNull(key: String?) =
if (containsKey(key)) getLong(key) else null
Ofc this is possible for floats
and ints
, too.
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