Cannot resolve for method show(android.app.FragmentManager, java.lang.String)
用getSupportFragmentManager()替代getFragmentManager()就可以了
应用闪退,Run面板上报错:
java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.TextView.setText(java.lang.CharSequence)' on a null object reference
发现错误原因是缺少绑定(findViewById)