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dadi520
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Fragement show DialgFragment android 
FragmentManager fm = getActivity().getSupportFragmentManager();
DialogFragment dialog = new MyDialogFragment(); // creating new object
dialog.show(fm, "dialog");
iOS Updating UI when using blocks / background threads ios http://danielbeard.wordpress.com/2012/04/16/ios-updating-ui-when-using-blocks-background-threads/ 
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
        //background processing goes here
        dispatch_async(dispatch_get_main_queue(), ^{
                //update UI here
        });
});
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