I have two problems with my project.1) pass and getting string value from one activity to another 2) Listview in dialogue in OnPost Execute

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http://stackoverflow.com – Im new to android. Im trying to do a simple database project. I have a two problems with my project. I have try in many ways but i cant solve it. My problems are 1) I want to pass a string value from first activity to second activity and in both activity string value i should get in third activity. I cant get the string values in third activity, to check it i have a print sts..In that i didnt get anything. There is no error also. 2) I want to display a data in listview in dialogue in second activity in Onpost Execute. Im getting error, but Im do with just a arrayadapter it displays successf (HowTos)