Android: Resolves #2896: Enable sharing to Joplin on Android (#2870)

ReactNativeClient/lib/shareHandler.ts

@@ -0,0 +1,42 @@
+const Note = require('lib/models/Note.js');
+const checkPermissions = require('lib/checkPermissions.js').default;
+const { ToastAndroid } = require('react-native');
+const { PermissionsAndroid } = require('react-native');
+
+import ShareExtension, { SharedData } from './ShareExtension';
+
+export default async (sharedData: SharedData, folderId: string, dispatch: Function) => {
+
+	if (!!sharedData.resources && sharedData.resources.length > 0) {
+		const hasPermissions = await checkPermissions(PermissionsAndroid.PERMISSIONS.READ_EXTERNAL_STORAGE);
+
+		if (!hasPermissions) {
+			ToastAndroid.show('Cannot receive shared data - permission denied', ToastAndroid.SHORT);
+			ShareExtension.close();
+			return;
+		}
+	}
+
+	// This is a bit hacky, but the surest way to go to
+	// the needed note. We go back one screen in case there's
+	// already a note open - if we don't do this, the dispatch
+	// below will do nothing (because routeName wouldn't change)
+	// Then we wait a bit for the state to be set correctly, and
+	// finally we go to the new note.
+	await dispatch({ type: 'NAV_BACK' });
+
+	await dispatch({ type: 'SIDE_MENU_CLOSE' });
+
+	const newNote = await Note.save({
+		parent_id: folderId,
+	}, { provisional: true });
+
+	setTimeout(() => {
+		dispatch({
+			type: 'NAV_GO',
+			routeName: 'Note',
+			noteId: newNote.id,
+			sharedData: sharedData,
+		});
+	}, 5);
+};