Honeycomb 应用程序在模拟器和本地工作，但在我创建签名的 APK 时不起作用

Question

When I debug directly from Eclipse in the emulator/tablet, my app works fine. But when I try to sign it and download it from android market after putting it there, it does not seem to work and throws

Caused by: android.app.Fragment$InstantiationException: Unable to instantiate fragment com.prakashkut.HackerNews.NewsListFragment: make sure class name exists, is public, and has an empty constructor that is public
at android.app.Fragment.instantiate(Fragment.java:500)
at android.app.Fragment.instantiate(Fragment.java:468)
at android.app.Activity.onCreateView(Activity.java:4132)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:664)

I tried putting a empty constructor too.

Am I missing something really simple?

Answer 1

Ah. I tried to create the signed APK on another machine and it worked fine. I guess there was some problem in the way Eclipse signed the APK the first time around because when even when I used jarsigner to sign it manually, it worked fine.