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Book Overview & Buying
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Table Of Contents
Flutter for Beginners - Fourth Edition
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DevTools is defined as follows in the documentation:
“DevTools is a suite of performance and debugging tools for Dart and Flutter.”
DevTools can be accessed via the web browser; you may have seen the DevTools URL printed to the console when you did a flutter run command. However, most people will use DevTools from within their IDE, so let’s explore that option further, specifically two areas that you will use often – widget and performance inspection.
If you still have the Hello World app running, then you will see a blue viewfinder icon with a magnifying glass inside on the right end of the debug controls. Click this button to open up the wonderful world of DevTools. The DevTools toolbar buttons referenced in this section are labeled A–E as shown below:

Figure 13.3: DevTools toolbar buttons grouped and labeled A–E for reference
We are currently in debug mode, so the widget inspector will be opened for us, allowing...