How do you debug on flutter?

GDB normally ignores breakpoints when it resumes execution, until at least one instruction has been executed . If it did not do this, you would be unable to proceed past a breakpoint without first disabling the breakpoint. This rule applies whether or not the breakpoint already existed when your program stopped.

To set a breakpoint, click the left margin (the line number ruler) in the source area. Clicking once sets a breakpoint, which should also show up in the Breakpoints area on the left. Clicking again removes the breakpoint.

Set breakpoints in source code To set a breakpoint in source code, click in the far left margin next to a line of code . You can also select the line and press F9, select Debug > Toggle Breakpoint, or right-click and select Breakpoint > Insert breakpoint. The breakpoint appears as a red dot in the left margin.

Open Dart DevTools to debug the app that’s running in the current window.

If a source file has changed and the source no longer matches the code you’re debugging , the debugger won’t set breakpoints in the code by default. Normally, this problem happens when a source file is changed, but the source code wasn’t rebuilt. To fix this issue, rebuild the project.