After I setup the android environment , I run tns run android in my project folder, but I got Cannot find connected devices error. But I have installed two emulators.

I have solved this issue. Before I have followed this tutorial to install the android-sdk and I installed android-sdk by homebrew, but after that I installed the Android Studio, it will also download and installed Android SDK, so there are two Android SDK on my mac environment, the solution is uninstall android-sdk installed by homebrew and change the ANDROID_HOME path to the SDK where the Android Studio placed.

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Most helpful comment
I have solved this issue. Before I have followed this tutorial to install the android-sdk and I installed android-sdk by homebrew, but after that I installed the Android Studio, it will also download and installed Android SDK, so there are two Android SDK on my mac environment, the solution is uninstall android-sdk installed by homebrew and change the ANDROID_HOME path to the SDK where the Android Studio placed.
