tns run doesn't load the app in emulator in Mac

Issue

tns device android --available-devices

You are using the deprecated nsconfig.json file. Just be aware that NativeScript 7 has an improved nativescript.config.(js|ts) file for when you're ready to upgrade this project.

Available emulators
Calculated width 89 is above terminal width: 80. You can try using smaller value for min_column_width. Current value is: 15
┌───────────────┬──────────┬───────────┬───────────────┬───────────────┬────────────┐
│ Device Name   │ Platform │ Version   │ Device        │ Image         │ Error Help │
│               │          │           │ Identifier    │ Identifier    │            │
│ Pixel_2_API_R │ Android  │           │               │ Pixel_2_API_R │            │
└───────────────┴──────────┴───────────┴───────────────┴───────────────┴────────────┘

Connected devices & emulators
Searching for devices...
Cannot find connected devices. Reconnect any connected devices, verify that your system recognizes them, and run this command again.

tns doctor also lists good results

✔ Getting environment information 

No issues were detected.
✔ Your ANDROID_HOME environment variable is set and points to correct directory.
✔ Your adb from the Android SDK is correctly installed.
✔ The Android SDK is installed.
✔ A compatible Android SDK for compilation is found.
✔ Javac is installed and is configured properly.
✔ The Java Development Kit (JDK) is installed and is configured properly.
✔ Xcode is installed and is configured properly.
✔ xcodeproj is installed and is configured properly.
✔ CocoaPods are installed.
✔ CocoaPods update is not required.
✔ CocoaPods are configured properly.
✔ Your current CocoaPods version is newer than 1.0.0.
✔ Python installed and configured correctly.
✔ The Python 'six' package is found.
✔ Xcode version 10.0.0 satisfies minimum required version 10.
✔ Getting NativeScript components versions information...
⚠ Update available for component nativescript. Your current version is 7.0.7 and the latest available version is 7.0.8.

However, when I run tns run android I see the following:

    You are using the deprecated nsconfig.json file. Just be aware that NativeScript 7 has an improved nativescript.config.(js|ts) file for when you're ready to upgrade this project.
Searching for devices...
Cannot find connected devices.
Emulator start failed with: No emulator image available for device identifier 'undefined'.
To list currently connected devices and verify that the specified identifier exists, run 'tns device'.
To list available emulator images, run 'tns device <Platform> --available-devices'.

still, a plain tns device doesn't list anything.

tns device
You are using the deprecated nsconfig.json file. Just be aware that NativeScript 7 has an improved nativescript.config.(js|ts) file for when you're ready to upgrade this project.

Connected devices & emulators
Searching for devices...
Cannot find connected devices. Reconnect any connected devices, verify that your system recognizes them, and run this command again.

$ emulator @Pixel_2_API_R just launches the emulator though.

when I run tns run android For some reason, it is not able to launch the emulator and run the app. What am I missing?

Solution

This link helped. I could execute tns run android and it loads the app on the emulator

Cannot find connected devices. Emulator start failed with: Cannot resolve the specified connected device by the provided index or identifier.

Answered By - CathyAugust