1 files changed, 82 insertions, 0 deletions
diff --git a/main/src/cgeo/geocaching/apps/AbstractApp.java b/main/src/cgeo/geocaching/apps/AbstractApp.java
new file mode 100644
index 0000000..f917563
--- /dev/null
+++ b/main/src/cgeo/geocaching/apps/AbstractApp.java
@@ -0,0 +1,82 @@
+package cgeo.geocaching.apps;
+
+import cgeo.geocaching.cgSettings;
+import cgeo.geocaching.utils.CollectionUtils;
+
+import android.app.Activity;
+import android.content.Context;
+import android.content.Intent;
+import android.content.pm.PackageManager;
+import android.content.pm.ResolveInfo;
+
+import java.util.List;
+
+public abstract class AbstractApp implements App {
+
+    protected String packageName;
+
+    private String intent;
+    private String name;
+
+    protected AbstractApp(final String name, final String intent,
+            final String packageName) {
+        this.name = name;
+        this.intent = intent;
+        this.packageName = packageName;
+    }
+
+    protected AbstractApp(final String name, final String intent) {
+        this(name, intent, null);
+    }
+
+    protected Intent getLaunchIntent(Context context) {
+        if (packageName == null) {
+            return null;
+        }
+        PackageManager packageManager = context.getPackageManager();
+        try {
+            // This can throw an exception where the exception type is only defined on API Level > 3
+            // therefore surround with try-catch
+            Intent intent = packageManager.getLaunchIntentForPackage(packageName);
+            return intent;
+        } catch (Exception e) {
+            return null;
+        }
+    }
+
+    public boolean isInstalled(final Context context) {
+        if (getLaunchIntent(context) != null) {
+            return true;
+        }
+        return isIntentAvailable(context, intent);
+    }
+
+    private static boolean isIntentAvailable(Context context, String action) {
+        final Intent intent = new Intent(action);
+
+        return isIntentAvailable(context, intent);
+    }
+
+    protected static boolean isIntentAvailable(Context context, Intent intent) {
+        final PackageManager packageManager = context.getPackageManager();
+        final List<ResolveInfo> list = packageManager.queryIntentActivities(
+                intent, PackageManager.MATCH_DEFAULT_ONLY);
+
+        return (CollectionUtils.isNotEmpty(list));
+    }
+
+    @Override
+    public String getName() {
+        return name;
+    }
+
+    @Override
+    public int getId() {
+        return getName().hashCode();
+    }
+
+    protected static cgSettings getSettings(Activity activity) {
+        return new cgSettings(activity,
+                activity.getSharedPreferences(cgSettings.preferences, Context.MODE_PRIVATE));
+    }
+}