问题
I am using android studio version 2.1.1 from developer channel. I got update notification from android 2.2 preview in canary channel. But I am not able to directly update 2.1.1 to 2.2 preview. It asks for separate download of version 2.2 preview of android studio.
Can anyone help if i don't want to separately download android studio 2.2 preview and want to directly update over android studio 2.1.1?
Here is attached screenshot for the same.
If i click on Download button it takes me to the downloads site instead of direct update over 2.1.1
回答1:
If you are using stable or beta version, you will not be able to directly update it. However you can update it to any beta/stable version but not to the preview version.
It is recommended to run preview version stand alone, so it will not affect your current stable/beta version.
We are not offering patches to ensure we do not disrupt your current stable configurations with our first 2.2 preview. Please download a full IDE image linked below to ensure you have the correct JDK bundled with the installation.
Note : We recommend you keep 2.1.1 and 2.2 Preview 1 installed side by side
回答2:
Yes, to update to Android Studio 2.2, you need to download only IDE file from the download site.Just replace downloaded IDE file to your existing IDE file.
回答3:
if you are updating through canary/dev channel than you will have to download whole file of android studio, you will be redirected to download page of studio
if you are updating through stable channel than you get option for
update and restart
We are not offering patches to ensure we do not disrupt your current stable configurations with our first 2.2 preview. Please download a full IDE image linked below to ensure you have the correct JDK bundled with the installation. Note We recommend you keep 2.1.1 and 2.2 Preview 1 installed side by side; they already use separate settings and cache directories. More information on how to install multiple versions simultaneously.
来源：https://stackoverflow.com/questions/37451724/unable-to-update-from-version-2-1-1-to-2-2-preview-in-android-studio