Communication between Application and WebView with JavaScript

in Android JavaScript
This tutorials exaplains how to call Javascript functions from application code and how to call application methods from Javascript.
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Android Spinner (DropDown) tutorial

in Android
This page contains a simple tutorial on how to use the Android Spinner component. The Android Spinner component is the UI element which is usually know as dropdown list.
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RadioButton tutorial

in Android
This tutorial shows how to use RadioButton widgets on Android.
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Introduction to Android Toasts

in Android
This tutorials shows how to show information to the user with Android Toast. Toast draws a small box to the screen with defined for short period of time. It is usefult for showing acknowledgements and other small info tidbits to the user.
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Background processing with AsyncTask

in Android
This tutorial shows how to use Android AsyncTask class to run jobs in background threads. All long running jobs need to run in a background thread so that they won't lock up the UI and create an Application Not Responding dialog.
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