Question

The android application having a toolbar with three buttons of three different implementations. The toolbar is common for all the activities. while for single click, these toolbars, should display their last used session/Activity and for double click they should display their initial or default states. Can anyone help me with samplecode/links on how to store and retrieve last used session of an activity in android.

Answer 1

for persistent storage of screen , store requiered data as SharedPreference/File/SQLite .
for cache or runTime storage use onRestoreInstanceState(Bundle savedInstanceState)

for default values , you can store these values in res/values and set them as hint/text whenever required .