Typefaceクラスでこのコードを使用して新しいを作成しようとするとProduct（カスタムクラスには、getView()に入力するメソッドがありますListView）
Typeface tf = Typeface.createFromAsset(context.getApplicationContext().getAssets(), "fonts/cambriab.ttf");
次のスタックトレースを取得します。
E/AndroidRuntime: FATAL EXCEPTION: main
java.lang.RuntimeException: native typeface cannot be made
at android.graphics.Typeface.<init>(Typeface.java:175)
at android.graphics.Typeface.createFromAsset(Typeface.java:149)
at com.darkraven.shoppinglist.Category.getView(Category.java:133)
at com.darkraven.shoppinglist.ProductListAdapter.getView(ProductListAdapter.java:40)
at android.widget.AbsListView.obtainView(AbsListView.java:2179)
at android.widget.ListView.makeAndAddView(ListView.java:1840)
at android.widget.ListView.fillDown(ListView.java:675)
at android.widget.ListView.fillFromTop(ListView.java:736)
at android.widget.ListView.layoutChildren(ListView.java:1641)
at android.widget.AbsListView.onLayout(AbsListView.java:2014)
at android.view.View.layout(View.java:14290)
at android.view.ViewGroup.layout(ViewGroup.java:4562)
at android.widget.RelativeLayout.onLayout(RelativeLayout.java:1076)
at android.view.View.layout(View.java:14290)
at android.view.ViewGroup.layout(ViewGroup.java:4562)
at android.widget.FrameLayout.onLayout(FrameLayout.java:448)
at android.view.View.layout(View.java:14290)
at android.view.ViewGroup.layout(ViewGroup.java:4562)
at com.android.internal.widget.ActionBarOverlayLayout.onLayout(ActionBarOverlayLayout.java:349)
at android.view.View.layout(View.java:14290)
at android.view.ViewGroup.layout(ViewGroup.java:4562)
at android.widget.FrameLayout.onLayout(FrameLayout.java:448)
at android.view.View.layout(View.java:14290)
at android.view.ViewGroup.layout(ViewGroup.java:4562)
at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:1976)
at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1730)
at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1004)
at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:5481)
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:749)
at android.view.Choreographer.doCallbacks(Choreographer.java:562)
at android.view.Choreographer.doFrame(Choreographer.java:532)
at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:735)
at android.os.Handler.handleCallback(Handler.java:730)
at android.os.Handler.dispatchMessage(Handler.java:92)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:5124)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:525)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
at dalvik.system.NativeStart.main(Native Method)
コンテキストがメインActivityです。