如何按意图打开特定电报联系人的聊天页面

Question

我想通过android意图打开特定电报联系人的聊天页面，例如@userTest。

这是意图打开的电报片段：

Intent myIntent = new Intent(Intent.ACTION_SEND);
myIntent.setType("text/plain");
myIntent.setPackage("org.telegram.messenger");
activity.startActivity(myIntent);

但是现在如何打开特定用户的聊天页面？

Answer 1

怎么运行的：

• 如果安装了电报客户端，它会构建浏览器列表以忽略它们。

• 如果只有一个客户端（goodresolvers == 1），那么它就会被打开。

• 如果没有好的客户端（goodresolvers == 0），它将回退到默认的意图处理程序。

• 如果您实现一个带有自定义选择器的对话框，您可以进一步改进此代码，该对话框仅允许在用户安装了多个 Telegram 客户端的情况下选择“好”客户端。

        public static void openTelegram(Activity activity, String userName) {
            Intent general = new Intent(Intent.ACTION_VIEW, Uri.parse("https://t.com/" + userName));
            HashSet<String> generalResolvers = new HashSet<>();
            List<ResolveInfo> generalResolveInfo = activity.getPackageManager().queryIntentActivities(general, 0);
            for (ResolveInfo info : generalResolveInfo) {
                if (info.activityInfo.packageName != null) {
                    generalResolvers.add(info.activityInfo.packageName);
                }
            }
    
            Intent telegram = new Intent(Intent.ACTION_VIEW, Uri.parse("https://t.me/" + userName));
            int goodResolver = 0;
            // gets the list of intents that can be loaded.
            List<ResolveInfo> resInfo = activity.getPackageManager().queryIntentActivities(telegram, 0);
            if (!resInfo.isEmpty()) {
                for (ResolveInfo info : resInfo) {
                    if (info.activityInfo.packageName != null && !generalResolvers.contains(info.activityInfo.packageName)) {
                        goodResolver++;
                        telegram.setPackage(info.activityInfo.packageName);
                    }
                }
            }
            //TODO: if there are several good resolvers create custom chooser
            if (goodResolver != 1) {
                telegram.setPackage(null);
            }
            if (telegram.resolveActivity(activity.getPackageManager()) != null) {
                activity.startActivity(telegram);
            }
        }

用法：openTelegram(activity, "userTest");