Android Studio无法呈现FloatingActionButton

Question

I'm just now learning how to develop in Android Studio and this error come up when I began my helloworld tutorial:

Rendering Problems The following classes could not be instantiated: - android.support.design.widget.FloatingActionButton

The exception details are:

android.content.res.Resources$NotFoundException: Unable to find resource ID #0x1080029

I'm using version 23.2.0 of the Android Support Design library.

How can I get the FloatActionButton to render in the preview pane?

Answer 1

Look at the error stack trace generated by the previewer. It says it cannot find a drawable resource by id 0x1080029. Does a drawable exist by that ID? Are you supplying an invalid ID? On my system it appears resources start at 0x7f010000.

Also found this: Android Studio FloatingActionButton error . It says there could be a bug in version 23.2.0 of the support design lib and that downgrading to 23.1.0 fixes it.

Answer 2

Upgrade to Android Support Library version 23.2.1 resolves the issue. It's already available in Android Studio SDK manager.

Answer 3

There appears to be a bug in version 23.2.0 of the Android Support libraries; simply downgrading to 23.1.1 and rebuilding your project should make the problem disappear.

Note that the problem is not just in the Design library; also the AppCompat widgets cause problems for AppCompatButton and AppCompatImageButton also give similar errors reporting missing resources.