Utility to share text and url on Facebook, Twitter and Whatsapp

ShareUtils.java

import android.app.Activity;
import android.content.ComponentName;
import android.content.Intent;
import android.content.pm.ActivityInfo;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.content.pm.ResolveInfo;
import android.net.Uri;
import android.text.TextUtils;
import android.util.Log;
import android.widget.Toast;

import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
import java.util.List;

/**
 * Author: Mario Velasco Casquero
 * Date: 02/12/2015
 */
public class ShareUtils {

    /**
     * Share on Facebook. Using Facebook app if installed or web link otherwise.
     *
     * @param activity activity which launches the intent
     * @param text     not used/allowed on Facebook
     * @param url      url to share
     */
    public static void shareFacebook(Activity activity, String text, String url) {
        boolean facebookAppFound = false;
        Intent shareIntent = new Intent(android.content.Intent.ACTION_SEND);
        shareIntent.setType("text/plain");
        shareIntent.putExtra(Intent.EXTRA_TEXT, url);
        shareIntent.putExtra(Intent.EXTRA_STREAM, Uri.parse(url));

        PackageManager pm = activity.getPackageManager();
        List<ResolveInfo> activityList = pm.queryIntentActivities(shareIntent, 0);
        for (final ResolveInfo app : activityList) {
            if ((app.activityInfo.packageName).contains("com.facebook.katana")) {
                final ActivityInfo activityInfo = app.activityInfo;
                final ComponentName name = new ComponentName(activityInfo.applicationInfo.packageName, activityInfo.name);
                shareIntent.addCategory(Intent.CATEGORY_LAUNCHER);
                shareIntent.setComponent(name);
                facebookAppFound = true;
                break;
            }
        }
        if (!facebookAppFound) {
            String sharerUrl = "https://www.facebook.com/sharer/sharer.php?u=" + url;
            shareIntent = new Intent(Intent.ACTION_VIEW, Uri.parse(sharerUrl));
        }
        activity.startActivity(shareIntent);
    }

    /**
     * Share on Twitter. Using Twitter app if installed or web link otherwise.
     *
     * @param activity activity which launches the intent
     * @param text     text to share
     * @param url      url to share
     * @param via      twitter username without '@' who shares
     * @param hashtags hashtags for tweet without '#' and separated by ','
     */
    public static void shareTwitter(Activity activity, String text, String url, String via, String hashtags) {
        StringBuilder tweetUrl = new StringBuilder("https://twitter.com/intent/tweet?text=");
        tweetUrl.append(TextUtils.isEmpty(text) ? urlEncode(" ") : urlEncode(text));
        if (!TextUtils.isEmpty(url)) {
            tweetUrl.append("&url=");
            tweetUrl.append(urlEncode(url));
        }
        if (!TextUtils.isEmpty(via)) {
            tweetUrl.append("&via=");
            tweetUrl.append(urlEncode(via));
        }
        if (!TextUtils.isEmpty(hashtags)) {
            tweetUrl.append("&hastags=");
            tweetUrl.append(urlEncode(hashtags));
        }
        Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(tweetUrl.toString()));
        List<ResolveInfo> matches = activity.getPackageManager().queryIntentActivities(intent, 0);
        for (ResolveInfo info : matches) {
            if (info.activityInfo.packageName.toLowerCase().startsWith("com.twitter")) {
                intent.setPackage(info.activityInfo.packageName);
            }
        }
        activity.startActivity(intent);
    }

    /**
     * Share on Whatsapp (if installed)
     *
     * @param activity activity which launches the intent
     * @param text     text to share
     * @param url      url to share
     */
    public static void shareWhatsapp(Activity activity, String text, String url) {
        PackageManager pm = activity.getPackageManager();
        try {

            Intent waIntent = new Intent(Intent.ACTION_SEND);
            waIntent.setType("text/plain");

            PackageInfo info = pm.getPackageInfo("com.whatsapp", PackageManager.GET_META_DATA);
            //Check if package exists or not. If not then code
            //in catch block will be called
            waIntent.setPackage("com.whatsapp");

            waIntent.putExtra(Intent.EXTRA_TEXT, text + " " + url);
            activity.startActivity(Intent
                    .createChooser(waIntent, activity.getString(R.string.share_intent_title)));

        } catch (PackageManager.NameNotFoundException e) {
            Toast.makeText(activity, activity.getString(R.string.share_whatsapp_not_instaled),
                    Toast.LENGTH_SHORT).show();
        }
    }


    /**
     * Convert to UTF-8 text to put it on url format
     *
     * @param s text to be converted
     * @return text on UTF-8 format
     */
    public static String urlEncode(String s) {
        try {
            return URLEncoder.encode(s, "UTF-8");
        } catch (UnsupportedEncodingException e) {
            Log.wtf("wtf", "UTF-8 should always be supported", e);
            throw new RuntimeException("URLEncoder.encode() failed for " + s);
        }
    }
}

facebook share on web ?not on app ?

If the Facebook app is not found the intent is replaced for sharing on web, but if it is found the intent will be the one inside the for loop

text not retrieve at Facebook .

these all are very nice can you please add G+ and Pinterest share methods.

I found my url or text not retrieve at Facebook , https://stackoverflow.com/questions/7545254/android-and-facebook-share-intent

Thank you!

text not retrieve at Facebook .

The only way is to copy text to cplipboard and ask the user to paste it. So Sad, Facebook does not permit any more to share text from android intent.

android.content.ClipboardManager clipboard = (android.content.ClipboardManager) activity.getSystemService(activity.CLIPBOARD_SERVICE);
        android.content.ClipData clip = android.content.ClipData.newPlainText("facebook",text);
        clipboard.setPrimaryClip(clip);

activity.startActivity(shareIntent);

        Toast toast = Toast.makeText(activity,"Please, long press and paste on top of the link. Thank you!",Toast.LENGTH_LONG);
        toast.setGravity(Gravity.CENTER_VERTICAL|Gravity.CENTER_HORIZONTAL,0,0);
        toast.show();