move all preference related stuff in prefs subfolder

mobile/src/com/cradle/iitc_mobile/prefs/AboutDialogPreference.java

@@ -0,0 +1,43 @@
+package com.cradle.iitc_mobile.prefs;
+
+import android.content.Context;
+import android.preference.Preference;
+import android.text.Html;
+import android.text.method.LinkMovementMethod;
+import android.util.AttributeSet;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.TextView;
+
+import com.cradle.iitc_mobile.R;
+
+public class AboutDialogPreference extends Preference {
+    private String mBuildVersion = "";
+    private String mIitcVersion = "";
+
+    public AboutDialogPreference(Context context, AttributeSet attrs) {
+        super(context, attrs);
+    }
+
+    @Override
+    public View getView(View convertView, ViewGroup parent) {
+        /*
+         * I found no better way for clickable links in a TextView then using Html.fromHtml(). Linkify
+         * is just broken and does not understand html href tags, so let's tag the @string/about_msg
+         * with CDATA and use Html.fromHtml() for clickable hrefs with tags.
+         */
+        final TextView tv = new TextView(getContext());
+        String text = getContext().getText(R.string.pref_about_text).toString();
+        text = String.format(text, mBuildVersion, mIitcVersion);
+
+        tv.setText(Html.fromHtml(text));
+        tv.setMovementMethod(LinkMovementMethod.getInstance());
+
+        return tv;
+    }
+
+    public void setVersions(String iitcVersion, String buildVersion) {
+        mIitcVersion = iitcVersion;
+        mBuildVersion = buildVersion;
+    }
+}