android default startup program issues

For example, there are three mobile phone text messaging program can be viewed, namely A, B, C, how to use code when viewing text messages A default view, and not allow the user to select the pop-up dialog (ie, the "default to this opened "), thank you<-! Main posts under Banner (D4) -><-! Posts under the main text (D5) ->
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If you notice that you can use to initiate direct package names start
If the system is not enough action and broadcast the same data, then make your choice unless you uninstall the other
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Competence, general application do
packagemanager have addPreferredActivity hiding method