android - When exchange Activity black screen -

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i have problem when call activity. screen goes black, , when done preload layout shows activity.

the problem layout needs load heavy.

how can manage thing not good?

this code, tried various tests:

1 syncronize 2 asinktask

if (tab.getposition() == 0) {         /*          * ----------------- tab data -----------------          */         try {              system.gc();             //initialize class needs load activity             mylayout = new tablemainlayout(this);             //i tried give time load, that's not good!             synchronized (this) {                 wait(5000);             }              setcontentview(mylayout);          } catch (exception e) {             log.i("link", "errore actionbartabs update  series: " + e);         }     }

but no avail. can tell me solution? or advice?

edit : update code: tablemainlayout.java

my problem can not figure out when layout ready. tried put in async nothing, tried syncronize nothing. enough simple example of how figure out when layout loaded , ready displayed. i'll customize code.


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