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POCan I assign a "default" OnClickListener() for an Android Activity?
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copied!<p>I have an Activity that, for each widget in the layout, I call setOnClickListener() to assign my OnClick() handler. In my OnClick() handler I use a switch statement to execute the desired code for each button based on the View parameter's ID. Is there a way to assign a default handler to the main view instead of having to make individual listener assignment calls for each widget in the view?</p> <p>================================================</p> <p><strong>UPDATE</strong></p> <p>Thanks to kcoppock's starting sample I have coded up a complete implementation of a class that has a static method that sets the click handler for all View elements in an Activity to a common click handler. This is for those situations where you have a simple layout and you want to do all the event handling in a common click listener event that uses a switch statement based on the View parameter object's ID. To use it from an Activity, just call <strong>Misc.setDefaultClickHandler(this, this)</strong>. Naturally your Activity needs to implement the View.OnclickListener interface.</p> <pre><code>package {put your package name here}; import android.app.Activity; import android.view.View; import android.view.ViewGroup; public class Misc { public Misc() { super(); } // Returns the root view for a given activity. public static View getRootView(Activity activity) { return activity.findViewById(android.R.id.content).getRootView(); } private static void assignClickHandler(View root, View.OnClickListener theOnClickListener) { // Is it a View or a View group? if (root instanceof ViewGroup) { // It's a ViewGroup, process all it's children. ViewGroup vg = (ViewGroup) root; for(int i = 0; i < vg.getChildCount(); i++) // Make recursive call. assignClickHandler(vg.getChildAt(i), theOnClickListener); } else { // Child is a View. Set the desired context for the click handler. root.setOnClickListener(theOnClickListener); } } public static void setDefaultClickHandler(Activity activity, View.OnClickListener theOnClickListener) { assignClickHandler(getRootView(activity), theOnClickListener); } } </code></pre> <p>-- roschler</p>

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