如果通过移动浏览器安装，则使用Facebook App打开粉丝页面

Question

Is there any way to ask users to open a fanpage through their Facebook App if it is installed through using URL or Javascript?

After some data search, it seems that for IPhone, there are some "URL Scheme" (eg fb://page/{id}) ways to call and launch the installed Facebook App for specific actions, so will there be a similar way for Android too?

Answer 1

This is a full fledged working code currently live in one of my apps:

public static String FACEBOOK_URL = "https://www.facebook.com/YourPageName";
public static String FACEBOOK_PAGE_ID = "YourPageName";

//method to get the right URL to use in the intent 
public String getFacebookPageURL(Context context) {
        PackageManager packageManager = context.getPackageManager();
        try { 
            int versionCode = packageManager.getPackageInfo("com.facebook.katana", 0).versionCode;
            if (versionCode >= 3002850) { //newer versions of fb app
                return "fb://facewebmodal/f?href=" + FACEBOOK_URL;
            } else { //older versions of fb app 
                return "fb://page/" + FACEBOOK_PAGE_ID;
            } 
        } catch (PackageManager.NameNotFoundException e) {
            return FACEBOOK_URL; //normal web url
        } 
    } 

This method will return the correct url for app if installed or web url if app is not installed.

Then start an intent as follows:

Intent facebookIntent = new Intent(Intent.ACTION_VIEW);
String facebookUrl = getFacebookPageURL(this);
facebookIntent.setData(Uri.parse(facebookUrl));
startActivity(facebookIntent);

That's all you need.