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I recently saw AlertDialog, I want to look at his source code, follow up, found the AlertController file, and then in its AlertController .setupView() method,

final View parentPanel = mWindow.findViewById(R.id.parentPanel);
final View defaultTopPanel = parentPanel.findViewById(R.id.topPanel);
final View defaultContentPanel = parentPanel.findViewById(R.id.contentPanel);
final View defaultButtonPanel = parentPanel.findViewById(R.id.buttonPanel);

Prompt me Cannot resolve symbol 'R', if I want to see the corresponding xml file, or I can click in, what should I do?

AlertController .setupView() 

final View parentPanel = mWindow.findViewById(R.id.parentPanel);
final View defaultTopPanel = parentPanel.findViewById(R.id.topPanel);
final View defaultContentPanel = parentPanel.findViewById(R.id.contentPanel);
final View defaultButtonPanel = parentPanel.findViewById(R.id.buttonPanel);
Phantômaxx
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da fa
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1 Answers1

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Close the project. Delete .gradle , .idea folders of the project and then reopen the project. and then try a fresh re-build and then you're good to go.

Else try invalidate caches and restart.

pramod_m
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