Java tutorial
//package com.java2s; import android.app.Activity; import android.text.TextUtils; import android.view.View; import android.widget.TextView; public class Main { public static void updateTitle(TextView view, String title) { if (view != null && !TextUtils.isEmpty(title)) { view.setVisibility(View.VISIBLE); view.setSelected(true); view.setText(title); } } public static void updateTitle(Activity activity, int viewId, String title) { TextView view = (TextView) activity.findViewById(viewId); updateTitle(view, title); } public static void updateTitle(Activity activity, int viewId, int resourceId) { TextView view = (TextView) activity.findViewById(viewId); String title = activity.getString(resourceId); updateTitle(view, title); } }