Activity Life Cycle (4) data is saved before the activity ends, and the activity ends

Source: Internet
Author: User

Activity Life Cycle (4) data is saved before the activity ends, and the activity ends

When the next activity is running, the previous activity will be destroyed. When we return to the previous activity, the system will restart the create activity. What should we do if the problem arises? OnSaveInstanceState can be saved using this method. Key-value pairs [ke, "value"] are actually saved like Intent. Let's take an example and try it. First, let's get the code:

@ Override protected void onSaveInstanceState (Bundle outState) {super. onSaveInstanceState (outState); String tempadata = "this is the stored data"; outState. putString ("data_key", tempadata );}

Write the following code in onCreate:

If (savedInstanceState! = Null) {String tempdata = savedInstanceState. getString ("data_key"); Log. d (TAG, tempdata );}


Related Article

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: and provide relevant evidence. A staff member will contact you within 5 working days.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.