How to know what Activity has started the current Activity

How can I know what Activity has started the current Activity? Is there any specific method like, i.e. getIntent().getCallerActivity() or the only way is saving some information开发者_如何转开发 within the Intent using putExtra()?

Thanks.

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There's getCallingActivity which you can use to get the name of the calling activity if you started the sub-activity with startActivityForResult.