Attempt to invoke virtual method ‘void androidx.fragment.app.FragmentActivity.runOnUiThread(java.lan

【代码】Attempt to invoke virtual method 'void androidx.fragment.app.FragmentActivity.runOnUiThread(java.lan。

兔兔秃秃

1321人浏览 · 2022-09-27 16:50:07

兔兔秃秃 · 2022-09-27 16:50:07 发布

Attempt to invoke virtual method 'void androidx.fragment.app.FragmentActivity.runOnUiThread(java.lang.Runnable)' on a null object reference

报错：

getActivity().runOnUiThread(new Runnable() {
                        @Override
                        public void run() {
                            h_viewpager.setCurrentItem(h_viewpager.getCurrentItem()+1);
                        }
                    });

改：

            if(getActivity()!=null){

                    getActivity().runOnUiThread(new Runnable() {
                        @Override
                        public void run() {
                            h_viewpager.setCurrentItem(h_viewpager.getCurrentItem()+1);
                        }
                    });

                    }

报错记录