React Native热重载执行后屏幕未随修改更新的问题咨询

Hey there! Sorry to hear you're stuck with Hot Reload not picking up your font size tweaks in profile.js—let’s walk through some common fixes that usually get this sorted out.

• Double-check Hot Reload activation
  Sometimes the "Hot Reloading.." prompt shows up, but the feature isn’t actually running correctly. Open your dev menu (shake your device, or use Ctrl+M/Cmd+M on desktop), first turn off Live Reload if it’s enabled, then re-select Hot Reloading. Make sure only Hot Reload is active to avoid conflicts.

• Reset React Native’s cache
  Cached assets or old JS bundles often prevent Hot Reload from picking up changes. Run this command in your project terminal:

  npx react-native start --reset-cache
  

  Once the packager restarts, reload your app and try modifying the font size again.

• Inspect your component styling hierarchy
  If you’re using a custom TextView component instead of the built-in Text, it might have internal styles that override your changes. Check the custom component’s code—ensure it properly merges incoming styles with its own, using something like StyleSheet.flatten([internalStyles, props.style]) to let your font size take priority.

• Do a full reload before re-enabling Hot Reload
  Hot Reload can sometimes get into a stuck state. First, select "Reload" from the dev menu to do a full app refresh. Once the app loads back up, re-enable Hot Reload and test your font size change again.

• Check for silent errors
  A tiny syntax mistake (like a missing comma in your style object) might break Hot Reload without showing a visible error. Enable "Debug JS Remotely" from the dev menu and check the browser console for any hidden errors that could be blocking the reload.

Hopefully one of these steps gets your Hot Reload working as expected again!

内容的提问来源于stack exchange，提问作者Ajay Gupta