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I need to manipulate a ListView's children when it is done loading, but I can't seem to find a way to find out when this happens. When I set the adapter of my ListView, the method returns immediately, but the population of it's children views happens asynchronously. Is there a way to handle the event when my list is full of views?
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The ListView instance calls the getView() method on the adapter for each data element. In this method the adapter creates the row layout and maps the data to the views in the layout. This root of the layout is typically a ViewGroup (layout manager) and contains several other views, e.g., an ImageView and a TextView .
This example demonstrates how do I dynamically update a ListView in android. Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project. Step 2 − Add the following code to res/layout/activity_main. xml.
just check if (cartlist. size()<0) then yours list is Empty.!
ListView is a view which groups several items and displays them in a vertical list. This list is also automatically made scrollable if the amount of data supplied cannot be accommodated on the screen. ArrayAdapter and ListView are required for view recycling.
You can either do a periodic polling to see if the list has been populated: write a while() loop to check once in a while. Or you could wait for a fixed amount of time (say 30 ms) before doing your next operation. These are not recommended methods, but should solve your problem.
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