Java tutorial
//package com.java2s; import android.app.Activity; import android.view.View; import android.widget.TextView; public class Main { public static void updateLeftTitle(Activity activity, int viewId, int resource) { View view = activity.findViewById(viewId); if (view == null) { return; } if (view instanceof TextView) { ((TextView) view).setText(activity.getString(resource)); } } public static void updateLeftTitle(Activity activity, int viewId, String text) { View view = activity.findViewById(viewId); if (view == null) { return; } if (view instanceof TextView) { ((TextView) view).setText(text); } } public static void updateLeftTitle(View view, int viewId, String text) { View subView = view.findViewById(viewId); if (subView == null) { return; } if (subView instanceof TextView) { ((TextView) subView).setText(text); } } }