saving . . . saved error in the hello world app program has been deleted. error in the hello world app program has been hidden .
error in the hello world app program
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<span style="color: rgba(0, 0, 0, 0.87); font-family: Roboto, RobotoDraft, Helvetica, Arial, sans-serif; font-size: 14px;">it is showing some error as [Could not download gradle-core.jar (com.android.tools.build:gradle-core:3.1.3): No cached version available for offline mode Consult IDE log for more details (Help | Show Log) (578ms)] please let me know how to overcome this issue. i even did the invalidate cache / refresh but even then its showing the same </span>
<span style="color: rgba(0, 0, 0, 0.87); font-family: Roboto, RobotoDraft, Helvetica, Arial, sans-serif; font-size: 14px;">kindly help me with this</span>

Android-app-using-Kotlin Getting-started-with-Hello-World-app 03-04 min 20-30 sec 20-04-21, 12:36 p.m. sravss

Answers:

Click on the File menu in the menu bar and Select Invalidate Caches/ Restartmenu.

Close the project and open it again.

Please check the below:

There may be various reasons for not building the project:

1.Your laptop configuration should have the specifications as given under system requirements in the link https://developer.android.com/studio/

2. Make sure Java is installed on your system.

3. Install Android Studio as per the instruction given in https://spoken-tutorial.org/media/videos/105/Android-app-using-Kotlin-Installation-Sheet-English.pdf

4.There should not be drop in Internet connection while installing and building the First project. Some of the gradle may not be downloaded completely.

5. It may be due to the long path of the project directory.

26-04-21, 6:47 p.m. NirmalaVenkat

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I am getting similar problem ma'am. My computer is compatible to run the application and even though I tried performing your instructions it does not seem to be working.<img align="none" alt="Screenshot" src="https://drive.google.com/file/d/1uFYPKr_fwrOzDLeKxs2ayAsiauGQgQqJ/view?usp=sharing">
23-05-21, 6:10 p.m. Ashura

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Attributes are case sensitive. 

Please check the name you have given. (myfirsttextview)
27-05-21, 3:01 p.m. NirmalaVenkat

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Attributes are case sensitive. In the spoke-tutorial, the attribute name given like this: myFirstTextView.
You should use two devices: one for internet connection and another one for app development. In some phones  like LG internet connection disconnected when we are downloading missing components in android studio.
Dr.R.Senthilkumar, IRTT
22-07-21, 6:12 a.m. Rsenthil_1976

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