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I’m trying to figure out if an Android phone has hardware menu button, I’ve searched and found this method:
ViewConfiguration.get(getApplicationContext()).hasPermanentMenuKey();
But this doesn’t seem to work in Android 2.1, and I’m trying to create an app that works on Android 2.1 and higher. Is it possible to detect if there is an hardware button on a phone with Android version less than 3.0?
Every compatible 2.1 android device had a menu key as it was part of the CDD:
http://source.android.com/compatibility/2.1/android-2.1-cdd.pdf
See section 8.7:
“The Home, Menu and Back functions are essential to the Android navigation paradigm. Device implementations MUST make these functions available to the user at all times, regardless of application state.”
Therefore, if the device is running android 2.1 it’s safe to assume it has a menu key. If it’s running a later version you can use the API you found.