feat(android): add openFile to utils (#6895)

* feat(android): add openFile to utils

* tests: move test_openFile() test to apps/ui-tests-app

Small changes to openFile() method

apps/app/ui-tests-app/intent/main-page.ts

@@ -0,0 +1,17 @@
+import { EventData } from "tns-core-modules/data/observable";
+import { SubMainPageViewModel } from "../sub-main-page-view-model";
+import { WrapLayout } from "tns-core-modules/ui/layouts/wrap-layout";
+import { Page } from "tns-core-modules/ui/page";
+
+export function pageLoaded(args: EventData) {
+    const page = <Page>args.object;
+    const wrapLayout = <WrapLayout>page.getViewById("wrapLayoutWithExamples");
+    page.bindingContext = new SubMainPageViewModel(wrapLayout, loadExamples());
+}
+
+export function loadExamples() {
+    const examples = new Map<string, string>();
+    examples.set("open-file", "intent/open-file");
+
+    return examples;
+}

apps/app/ui-tests-app/intent/main-page.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+<Page loaded="pageLoaded">
+    <ScrollView orientation="vertical" row="1">
+        <WrapLayout id="wrapLayoutWithExamples"/>
+    </ScrollView>
+</Page>

apps/app/ui-tests-app/intent/open-file.ts

@@ -0,0 +1,15 @@
+import { isIOS, isAndroid } from "tns-core-modules/platform";
+import * as fs from "tns-core-modules/file-system/file-system";
+import * as utils from "tns-core-modules/utils/utils";
+
+export function openFile() {
+    let directory;
+    if (isIOS) {
+        directory = fs.knownFolders.ios.downloads();
+    } else if (isAndroid) {
+        directory = android.os.Environment.getExternalStorageDirectory().getAbsolutePath().toString();
+    }
+
+    const filePath = fs.path.join(directory, "Test_File_Open.txt");
+    utils.openFile(filePath);
+}

apps/app/ui-tests-app/intent/open-file.xml

@@ -0,0 +1,5 @@
+<Page navigatingTo="navigatingTo">
+  <GridLayout id="root">
+    <Button text="Open File" tap="openFile" height="40"></Button>
+  </GridLayout>
+</Page>