show a "loader" in an image view

I know of a couple ways to do this (neither of which I like) - so I'm turning to t开发者_运维技巧he experts at SOF.

I want to use the ProgressBar. The catch is that I want to use this as the image/background for my ImageView. Is there a way to do this? I started trying this with drawable but I wasn't sure how to go about it exactly.

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You can use a ViewSwitcher to switch between the ImageView and a ProgressBar. You can set the ProgressBar as the first child, and when you are done loading the image, you can switch to the ImageView.

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Use FrameAnimation drawable as the source of the ImageView or you can rotate it use TweenAnimation.

Animation Resource

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<LinearLayout
     android:orientation="horizontal"
     ... >
     <ProgressBar
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         style="@android:style/Widget.ProgressBar.Small"
         android:layout_marginRight="5dp" />
     <TextView
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:text="@string/loading" />
 </LinearLayout>