如何判断ImageView在android中是否有设置图像？

Question

In android, if you create an imageview in the xml code like this:

<ImageView
    android:id="@+id/picture_avatar"
    android:layout_width="90dp" 
    android:layout_height="110dp"
    android:background="#bdbdbd" />

How can you tell in the java code, if it has a set image?

There is another button that sets an image using the setImageBitmap function. So I want to tell if it has an image or not.

Thanks

Answer 1

pictureavatar.getDrawable() == null

如果为真，那么没有图像，否则它有图像