onRefresh function Called when the view starts refreshing.

iositemStyle itemStylePropType Style to apply to each of the item labels.

onEndReachedThreshold number Threshold in pixels (virtual, not physical) for calling onEndReached.

Debugging React Native Apps To access the in-app developer menu: On iOS shake the device or press control + ⌘ + z in the simulator. On Android shake the device or press hardware menu button (available on older devices and in most of the emulators, e.g. in genymotion you can press ⌘ + m or F2 to simulate hardware menu button click). You can also install Frappé, a tool for OS X, which allows you to emulate shaking of devices remotely. You can use ⌘ + Shift + R as a shortcut to trigger a shake f

onDrawerStateChanged function Function called when the drawer state has changed. The drawer can be in 3 states: - idle, meaning there is no interaction with the navigation view happening at the time - dragging, meaning there is currently an interaction with the navigation view - settling, meaning that there was an interaction with the navigation view, and the navigation view is now finishing its closing or opening animation

testID string Used to locate this view in UI automation tests.

onSubmitEditing function Callback that is called when the text input's submit button is pressed. Invalid if multiline={true} is specified.

drawerWidth number Specifies the width of the drawer, more precisely the width of the view that be pulled in from the edge of the window.

source {uri: string, method: string, headers: object, body: string}, {html: string, baseUrl: string}, number Loads static html or a uri (with optional headers) in the WebView.

onMoveShouldSetResponderCapture function