我想在我的应用程序中添加一个基本的 Snackbar,但是我收到了一个错误,我无法弄清楚原因。
我在 onCreateView() 方法中添加了这段代码,在我的 Fragment 中。
Snackbar.make(view, "Snackbar", Snackbar.LENGTH_LONG)
.setAction("Action", null).show();
并收到了此错误:
06-01 10:26:09.955 1232-1232/? E/ActivityThread﹕ Failed to find provider info for me.muraterdogan.watchme.MetricaContentProvider
06-01 10:26:10.075 1232-1447/? E/ActivityThread﹕ Failed to find provider info for me.muraterdogan.watchme.YPLContentProvider
06-01 10:33:55.044 6646-6646/? E/AndroidRuntime﹕ FATAL EXCEPTION: main
Process: me.muraterdogan.watchme, PID: 6646
java.lang.NullPointerException: Attempt to invoke virtual method 'android.content.Context android.view.ViewGroup.getContext()' on a null object reference
at android.support.design.widget.Snackbar.<init>(Snackbar.java:116)
at android.support.design.widget.Snackbar.make(Snackbar.java:140)
at me.muraterdogan.watchme.fragments.TrendingFragment.GetData(TrendingFragment.java:90)
at me.muraterdogan.watchme.fragments.TrendingFragment.onCreateView(TrendingFragment.java:83)
...
.setAction("Action", null).show(getActivity());
。 - M D