android - java.lang.NoClassDefFoundError Proguard - unable to resolve virtual method -


in main class in application i'm handling api variations programmatically:

    private static bluetoothheadset mbluetoothheadset;  // later in code      if (build.version.sdk_int >= build.version_codes.honeycomb) {      mbluetoothheadset = proxy;      }

i assumed noclassdeffounderror caused because declaring variable bluetoothheadset api 11, app available api 9. thinking being clever , not directly referencing missing class, therefore parameterized it:

    private static object mbluetoothheadset;  // later in code      if (build.version.sdk_int >= build.version_codes.honeycomb) {      mbluetoothheadset = (bluetoothheadset) proxy;      }

but didn't work , i'm wondering if proguard obfuscation culprit:

could not find class 'com.package.name.qc', referenced method com.package.name.example.<init>  vfy: unable resolve virtual method 435: landroid/bluetooth/bluetoothheadset;.startvoicerecognition (landroid/bluetooth/bluetoothdevice;)z

during obsfucation, proguard mapping bluetoothheadset class won't found on api level 9?

i deal many other api variations in way , have never had issue before, i'm confused why it's happening in these circumstances? perhaps it's due variable declaration i'm using?

i really, don't want have create separate classes each api level, cause many duplications in code , in opinion, harder manage.

i thank in advance , hope can help.

edit - i've found in eyes free source code they've implemented own bluetoothheadsetcompat class using reflection, assume how getting around problem. doesn't straight forward though, whilst trawl through code, other suggestions welcome!


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