如何使用intent.action_view和Uri打开精确应用程序

Question

 val intent = Intent(Intent.ACTION_VIEW, Uri.parse("<zoom url>"))
 val packageManager = packageManager
 if (intent.resolveActivity(packageManager) != null) {
     startActivity(launchApp)
 }

但这也显示了我的浏览器，因为用户可以选择它并打开我传递的uri。我想做的只是打开缩放应用程序与URI。通过使用val activities=packageManager.queryintentActivities(intent,packageManager.match_default_only)我可以筛选可以打开我的intent的应用程序，但是我如何选择确切的应用程序（缩放）并将uri传递给它，并且仅用我的会议URL打开缩放应用程序呢？

Answer 1

可能需要一个PackageName？

在这篇文章中我引用了谷歌的一些代码

public static void openCustomTab(Activity activity,
                                     CustomTabsIntent customTabsIntent,
                                     Uri uri,
                                     CustomTabFallback fallback) {
        String packageName = CustomTabsHelper.getPackageNameToUse(activity);

        //If we cant find a package name, it means theres no browser that supports
        //Chrome Custom Tabs installed. So, we fallback to the webview
        if (packageName == null) {
            if (fallback != null) {
                fallback.openUri(activity, uri);
            }
        } else {
            customTabsIntent.intent.setPackage(packageName);
            customTabsIntent.launchUrl(activity, uri);
        }
    }

它使用setpackage()，然后应用程序将打开chrome应用程序，而不需要选择器。

static final String STABLE_PACKAGE = "com.android.chrome";
static final String BETA_PACKAGE = "com.chrome.beta";
static final String DEV_PACKAGE = "com.chrome.dev";
static final String LOCAL_PACKAGE = "com.google.android.apps.chrome";

...
...

public static String getPackageNameToUse(Context context) {
        if (sPackageNameToUse != null) return sPackageNameToUse;

        PackageManager pm = context.getPackageManager();
        // Get default VIEW intent handler.
        Intent activityIntent = new Intent(Intent.ACTION_VIEW, Uri.parse("http://www.example.com"));
        ResolveInfo defaultViewHandlerInfo = pm.resolveActivity(activityIntent, 0);
        String defaultViewHandlerPackageName = null;
        if (defaultViewHandlerInfo != null) {
            defaultViewHandlerPackageName = defaultViewHandlerInfo.activityInfo.packageName;
        }

        // Get all apps that can handle VIEW intents.
        List<ResolveInfo> resolvedActivityList = pm.queryIntentActivities(activityIntent, 0);
        List<String> packagesSupportingCustomTabs = new ArrayList<>();
        for (ResolveInfo info : resolvedActivityList) {
            Intent serviceIntent = new Intent();
            serviceIntent.setAction(ACTION_CUSTOM_TABS_CONNECTION);
            serviceIntent.setPackage(info.activityInfo.packageName);
            if (pm.resolveService(serviceIntent, 0) != null) {
                packagesSupportingCustomTabs.add(info.activityInfo.packageName);
            }
        }

        // Now packagesSupportingCustomTabs contains all apps that can handle both VIEW intents
        // and service calls.
        if (packagesSupportingCustomTabs.isEmpty()) {
            sPackageNameToUse = null;
        } else if (packagesSupportingCustomTabs.size() == 1) {
            sPackageNameToUse = packagesSupportingCustomTabs.get(0);
        } else if (!TextUtils.isEmpty(defaultViewHandlerPackageName)
                && !hasSpecializedHandlerIntents(context, activityIntent)
                && packagesSupportingCustomTabs.contains(defaultViewHandlerPackageName)) {
            sPackageNameToUse = defaultViewHandlerPackageName;
        } else if (packagesSupportingCustomTabs.contains(STABLE_PACKAGE)) {
            sPackageNameToUse = STABLE_PACKAGE;
        } else if (packagesSupportingCustomTabs.contains(BETA_PACKAGE)) {
            sPackageNameToUse = BETA_PACKAGE;
        } else if (packagesSupportingCustomTabs.contains(DEV_PACKAGE)) {
            sPackageNameToUse = DEV_PACKAGE;
        } else if (packagesSupportingCustomTabs.contains(LOCAL_PACKAGE)) {
            sPackageNameToUse = LOCAL_PACKAGE;
        }
        return sPackageNameToUse;
    }