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What allows swift navigation between different arts of an application andriod

Every app that doesn't only consist of one single UI needs some form of navigation - to enable users to move between different screens and to display information or react to events. Whether you use navigation controllers, modal view controllers, or some form of custom paradigm - having a nice way to perform navigation, in a way that doesn't paint you into corners, can be tricky. It's easy for view controllers to become tightly coupled and to have to spread dependencies out across your entire app.