Use fast Image

[Szymon20000]

To be honest I'm not sure about this change as the difference is very small and today I discovered that It doesn't support Fabric. You also use FastImage in ImageView component but I guess it's easier to rewrite ImageView to RCTImage than add fabric support to FastImage (but isn't that hard).

Videos

Slow internet connection (RNImage)

Simulator.Screen.Recording.-.iPhone.14.-.2022-09-15.at.14.17.22.mp4

Slow internet connection (FastImage)

Simulator.Screen.Recording.-.iPhone.14.-.2022-09-15.at.14.18.13.mov

Details

It's very hard to show that change unless you have a slow internet connection it won't be visible for a use for 2 reasons:

• app needs time to switch to chat screen so images have enough time to load :D
• there is no movement scrolling in on the chat list so you cannot scroll very fast

FastImage uses SDWebImage under the hood that has persistent cache and will preserve images between app launches. However RCTImageView uses NSCache that is not saving images in similar persistent way.

I had to move ActivityIndicator under the Image in ImageWithSizeCalculation because FastImage can take a view from cache before a onEnd event fires.

Fixed Issues

fixes: #10792

Tests

• Verify that no errors appear in the JS console

PR Review Checklist

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  • I verified any copy / text that was added to the app is correct English and approved by marketing by tagging the marketing team on the original GH to get the correct copy.
  • I verified proper file naming conventions were followed for any new files or renamed files. All non-platform specific files are named after what they export and are not named "index.js". All platform-specific files are named for the platform the code supports as outlined in the README.
  • I verified the JSDocs style guidelines (in STYLE.md) were followed
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• I verified other components that can be impacted by these changes have been tested, and I retested again (i.e. if the PR modifies a shared library or component like Avatar, I verified the components using Avatar have been tested & I retested again)
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• I verified any variables that can be defined as constants (ie. in CONST.js or at the top of the file that uses the constant) are defined as such
• If a new component is created I verified that:
  • A similar component doesn't exist in the codebase
  • All props are defined accurately and each prop has a /** comment above it */
  • Any functional components have the displayName property
  • The file is named correctly
  • The component has a clear name that is non-ambiguous and the purpose of the component can be inferred from the name alone
  • The only data being stored in the state is data necessary for rendering and nothing else
  • For Class Components, any internal methods passed to components event handlers are bound to this properly so there are no scoping issues (i.e. for onClick={this.submit} the method this.submit should be bound to this in the constructor)
  • Any internal methods bound to this are necessary to be bound (i.e. avoid this.submit = this.submit.bind(this); if this.submit is never passed to a component event handler like onClick)
  • All JSX used for rendering exists in the render method
  • The component has the minimum amount of code necessary for its purpose, and it is broken down into smaller components in order to separate concerns and functions
• If a new CSS style is added I verified that:
  • A similar style doesn't already exist
  • The style can't be created with an existing StyleUtils function (i.e. StyleUtils.getBackgroundAndBorderStyle(themeColors.componentBG)
• If the PR modifies a generic component, I tested and verified that those changes do not break usages of that component in the rest of the App (i.e. if a shared library or component like Avatar is modified, I verified that Avatar is working as expected in all cases)
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QA Steps

• Verify that no errors appear in the JS console

Screenshots

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