title: How to refresh just a part of Android UI component?
body: <p>For example, an android UI consists of a textView, an imageView and a gallery, when I update the text on the textView and the image on the imageView, the gallery also update automatically. The problem is that the thread will reload the image used by the gallery and affect the performance. What I want is to just refresh the textView and the imageView, but not the gallery. How can I achieve this?</p>