android在fragment中Toast.makeText不能显示

Question

android在fragment中Toast.makeText(getActivity(),"当前网络不可用",Toast.LENGTH_LONG);不显示

Answer 1

Toast.makeText(getActivity(),"当前网络不可用",Toast.LENGTH_LONG);该为
Toast.makeText(getActivity(),"当前网络不可用",Toast.LENGTH_LONG).show();