It looks like you're trying to embed a Vimeo video in your mobile app without having black bars on the sides in widescreen view. To achieve this, you'll need to ensure that the aspect ratio of the video matches the device's screen aspect ratio. Here are some steps you can follow to accomplish this:
1. Aspect Ratio Calculation: Determine the aspect ratio of the device where the video will be displayed. For example, if the device has a 16:9 aspect ratio, you'll need to ensure that the video's aspect ratio matches this.
2. Video Encoding: When uploading the video to Vimeo, make sure that the video is encoded with the correct aspect ratio. You can set the aspect ratio during the encoding process to match the target devices.
3. Embedding Options: When embedding the Vimeo video in your mobile app, check the embedding options provided by Vimeo. You may need to adjust the embed code to specify the aspect ratio of the video.
4. Responsive Design: Ensure that your mobile app's layout is responsive and can adapt to different screen sizes and aspect ratios. This will help prevent black bars from appearing on the sides of the video.
By following these steps and ensuring that the video's aspect ratio matches the device's screen aspect ratio, you should be able to display the Vimeo video without black bars on widescreen view in your mobile app. If you encounter any specific issues or error messages while trying to replicate this on an emulator, feel free to provide more details so that I can offer further assistance.