Ubuntu 16.4 LTS下Android Studio 3.0添加Alt+鼠标左键快捷键问题求助

Hey there, I’ve dealt with similar desktop shortcut conflicts on Ubuntu before, so let’s walk through the fixes for your issue where Android Studio won’t recognize the Alt + Left Mouse Button combination (even though it picks up each input separately):

1. Resolve Ubuntu System-Level Shortcut Conflicts #

Ubuntu’s default window manager (Unity) uses Alt + Left Mouse Button to move windows by default—this is almost certainly the culprit. Here’s how to reconfigure it:

• Open System Settings → Keyboard → Switch to the Shortcuts tab
• Navigate to the Windows category
• Find the Move window option (it’s bound to Alt + Left Mouse Button by default)
  • Either reassign it to a different combination (like Super/Windows + Left Mouse Button)
  • Or click the shortcut field and press Backspace to disable it entirely
• Restart Android Studio after making this change, then try setting your shortcut again

2. Re-Add the Shortcut in Android Studio Properly #

Sometimes the way you input the combination matters. Follow these steps carefully:

• Open Android Studio, go to File → Settings → Keymap
• Locate the action you want to bind to Alt + Left Mouse Button
• Right-click the action and select Add Mouse Shortcut
• In the pop-up dialog: hold down the Alt key first, then click the left mouse button—don’t click first or release Alt early
• Click OK to save, then test the shortcut immediately

3. Clear Android Studio’s Cache #

Corrupted cache files can cause weird input recognition issues. Let’s wipe them:

• Close Android Studio completely
• Open a terminal and run this command to delete the cache directory:

  rm -rf ~/.AndroidStudio3.0/system/caches
  

• Launch Android Studio again and attempt to set the shortcut once more

4. Verify Your JDK Setup (Optional) #

Incompatible JDK versions can sometimes interfere with input handling. Make sure you’re using Android Studio’s built-in JDK:

• Go to File → Project Structure → SDK Location
• Check the JDK location field—it should point to something like /opt/android-studio/jre
• If it’s using a different JDK, switch to the built-in one and restart Android Studio

内容的提问来源于stack exchange，提问作者user9163511