Problem record-blank page displayed after Activity jump,-activity jump

Problem record-blank page displayed after Activity jump,-activity jump

I wrote a simple Android notepad two days ago. The page that jumps from the main interface to the add content page is always blank.

The setContentView xml file is displayed normally in the visual development environment. After being instructed by the predecessors, it turns out that the onCreate function has encountered a problem.

Before Android 5.0, The onCreate function defaults

@ Override protected void onCreate (Bundle savedInstanceState) {super. onCreate (savedInstanceState );}

In Android 5.0, an onCreate function with the PersistableBundle parameter is provided.

@ Override public void onCreate (Bundle savedInstanceState, PersistableBundle persistentState) {super. onCreate (savedInstanceState, persistentState );}

The PersistableBundle parameter is deleted and the super. onCreate (savedInstanceState, persistentState) is retained );

Therefore, the problem that the blank interface is always displayed. How can this problem be caused and how to use the PersistableBundle parameter? What I have learned is not well understood yet. If I have learned it in the future, I should re-describe the problem. here,

Write down the problem that took me a lot of time to debug and provide reference.