Android Search feature case, save search history locally ...

Development of the app has a search function, and need to display the history of the search, I spare no time to help her develop this feature, now the page is extracted into a demo to share to everyone.

implementation effect:  

This case is very simple to implement, so it can be directly embedded in the project to use, involving the knowledge point:  
-  Database additions and deletions change operation  
-  ListView and ScrollView nested conflict resolution  
-  Monitor soft keyboard return button set to search button  
-  use Textwatcher () real-time filter  
-  Search keywords searched again not repeatedly added to the database  
-  just entered the page Setup soft keyboard does not automatically eject because of EditText

code

1. Recordsqliteopenhelper.java

1. Mainactivity.java

1. Mylistview.java

1. Activity_main.xml

Android Search feature case, save search history locally ...