Android x86 supports multiple keyboard layouts but it doesn’t support switching between them easily using a shortcut like alt+shift. Here’s how you can do this!

1- Install External Keyboard Helper Pro App.

2- Open Setting - Language & input, then active External Keyboard.

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3- Open External Keyboard Helper Settings, Choose your first keyboard layout then open Advanced settings.

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4- Choose Language switching.

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5- Open Language-switch key.

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6- Check Alt button, Press change then press ALT button from keyboard, after that press Save.

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7- Choose your second keyboard layout.

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Note: This article was posted originally on XDA Developers forums, you can find it here.