android sdk incompatiblities with wi-fi direct

Question

I'm developing an app that uses wi-fi direct module. As you all know it's not available before Android 4.0, but I want to mantain compatibility without wi-fi direct.

The problem is I'm using instance variables from classes like Channel or WifiP2pManager. Of course on prior versions to ICS they'll not be available. I was just following the Android official developer guide, so It seemed that I did nothing wrong.

Any ideas of how can I solve this?

Thanks!

score 1 · Accepted Answer · answered Nov 20 '12 at 13:14

1

if(Build.VERSION_CODES < Build.VERSION_CODES.ICE_CREAM_SANDWICH) {
    // compat code here
} else {
  // normal code here
}

answered Nov 20 '12 at 13:14

Fabian Knapp

1,342
13
27

I now that, but I mean on an instance variable. I have a ClassNotFoundException just when it's created – Javier Manzano Nov 20 '12 at 13:39
you can find it here: http://developer.android.com/training/connect-devices-wirelessly/wifi-direct.html – Javier Manzano Nov 20 '12 at 13:47
It's the official docmentation and it just assign the values to instance variables. But, of course, this throws an Exception – Javier Manzano Nov 20 '12 at 13:48
It was not a problem with this. It was a problem with Roboguice =) – Javier Manzano Nov 20 '12 at 14:39

score 0 · Answer 2 · answered Nov 20 '12 at 13:14

0

Make your code conditional, like

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES. ICE_CREAM_SANDWICH ) {

  // something

}

or set minSdk version in your manifest

android:minSdkVersion="14"

or, if you need so, split your apps into separate modules, make core not requiring API14 but trying to use wifi-direct module. And wifi-direct module would require API14 so user with proper device would be able to install both, while others just the core.

answered Nov 20 '12 at 13:14

Marcin Orlowski

72,056
11
123
141

Same as above: I now that, but I mean on an instance variable. I have a ClassNotFoundException just when it's created – Javier Manzano Nov 20 '12 at 13:40

score 0 · Answer 3 · answered Nov 20 '12 at 14:39

0

It was not a problem with this. It was a problem with Roboguice =)

I've just opened an issue. Just if someone wants to try it =)

http://code.google.com/p/roboguice/issues/detail?id=226&thanks=226&ts=1353421889

answered Nov 20 '12 at 14:39

Javier Manzano

4,761
16
56
86

android sdk incompatiblities with wi-fi direct

3 Answers3