Summary:
When the activity hosting a Modal goes away, we should dismiss the dialog from the stack and then reconstitute it when the activity comes back. This means that if an activity is paused because another activity is placed on top of it but our ui operation was delayed, it will not blow up finding no window since it is gone.
Also fixes a place where we should remove a listener for lifecycle events which we were not doing.
Reviewed By: halfjuice
Differential Revision: D3357286
fbshipit-source-id: c5c6dd8e5ef299762ed9aa15a6910ce9c0b111dc
Summary:
Currently the Modal component on Android is rendered below the Status Bar, which changes it's color to grey, and in the UIExplorer example the backdrop is just formatted to look the same color. In some scenarios users may want to preserve the color of their status bar and make it look as though the modal is appearing on top. This PR allows for that.
This GIF shows current behavior and new behavior with the translucentStatusBar prop set to true.

I've updated the UIExplorer app to demonstrate and the docs as shown below

Thanks!
Closes https://github.com/facebook/react-native/pull/7157
Differential Revision: D3264497
Pulled By: dmmiller
fb-gh-sync-id: 61346d99414d331d3420f44a4c5f6341b0973be6
fbshipit-source-id: 61346d99414d331d3420f44a4c5f6341b0973be6
Summary: When the ModalHostView is added as a child of whatever view holds it, if accessibility is turned on, Android will walk up to the root and then walk all children of the child and verify that they are indeed children of the root. Since ModalHostView actually adds its children to a new ReactDialogViewGroup which has the Dialog as a parent, there is a disagreement about the tree deep in the bowels of View when it performs that walk. The trick is to stop from adding the children of the ModalHostView when walking for accessibility. The accessibility of those children views are properly handled by the hosting Dialog.
Reviewed By: andreicoman11
Differential Revision: D3230033
fb-gh-sync-id: 1e5ac334c996b1d5f50c75ded60805d8b871477a
fbshipit-source-id: 1e5ac334c996b1d5f50c75ded60805d8b871477a
Summary: When I first did Modal on Android, I incorrectly set the styleWidth and styleHeight on the ModalHostShadowNode. This corresponded to RCTModalHostView in Modal.js. This node is actually really just a dummy node in the tree. The proper node to set the width and height on is the inner <View/> that has top and left position set on it. This updates the code to set the width and height on that inner node.
Reviewed By: mkonicek
Differential Revision: D3077415
fb-gh-sync-id: e9aee0a21333ed0b5bdde11f453381b0a13470c9
shipit-source-id: e9aee0a21333ed0b5bdde11f453381b0a13470c9