Java tutorial
//package com.java2s; //License from project: Open Source License import android.content.Context; import android.content.Intent; import android.content.pm.PackageManager; import android.content.pm.ResolveInfo; import java.util.List; public class Main { /** * Indicates whether the specified action can be used as an intent. This * method queries the package manager for installed packages that can * respond to an intent with the specified action. If no suitable package is * found, this method returns false. * * @param context The application's environment * @param action The Intent action to check for availability * * @return True if an Intent with the specified action can be sent and * responded to, false otherwise */ public static boolean isIntentAvailable(final Context context, final String action) { final PackageManager packageManager = context.getPackageManager(); final Intent intent = new Intent(action); List<ResolveInfo> list = packageManager.queryIntentActivities(intent, PackageManager.MATCH_DEFAULT_ONLY); return list.size() > 0; } }