How to retain the global variebles when application is upgraded to new version in android?

Question

In my android application ,user has to register by agreeing the terms and condition giving their email id. If user upgrade the application to next version, I should not get the

Answer 1

You could use SharedPreferences

class VersionInfo {

private VersionInfo() {}

private static final String PREF_VERCODE = "VERCODE";

public static final VersionInfo INSTANCE = new VersionInfo();

void setVersionCode(Context ctx, int ver) {
     PreferenceManager.getDefaultSharedPreferences(ctx).edit().putInt(PREF_VERCODE, ver).commit();
    }

int getVersionInfo(Context ctx) {
PreferenceManager.getDefaultSharedPreferences(ctx).getInt(PREF_VERCODE, 1);
}
}