flutter : no connected devices available / configure.


Please make sure you have clone flutter sdk from here

https://github.com/flutter/flutter.git

and run

flutter doctor --android-licenses

Check to ensure you have install the following :-

 Android SDK, Android SDK Platform-Tools, and Android SDK Build-Tools, Images are installed
Then from the toolbar make sure you set to a "device", in my case Nexus 6 API P emulator. This will fire it up and once it is up and running, click on the play button.


 It is a bit weird but .......that's how it works. 

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The specified initialization vector (IV) does not match the block size for this algorithm

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If you're getting  exception when trying to assigned key to a symmetric key and getting error message below :- The specified initialization vector (IV) does not match the block size for this algorithm And your code probably look like something below :- Then you need to go into debug mode and start looking into the supported size for IV as shown in diagram below :- As you can see, IV is 16 bytes, so you need to provide 16 bytes. The same goes for Key field too, if you're adding anything to it. As long as you provide a valid key size, then we're good and you're code will be ready.
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