Root cause:
After OS upgrade to R, the original logic only check SP key but does not consider the setting enabled key to cause it cannot not show correctly.
Next:
1) accessibility_autoclick_enabled=1 but does not have SP key, customize layout is checked and show the right value
2) accessibility_autoclick_enabled=1 and have SP key, show according items is checked
3) accessibility_autoclick_enabled=0, off button is checked
Bug: 151123423
Test: local test
Change-Id: I9ebcbb35ee0071dbf8c969d0a70ea6293f4c6edb
Added radio button preference and control to handle user update value.
Bug: 146019277
Test: Manual
Change-Id: Ie9136f942eec43fc378e7f39d8c2eb7534c531c9
