Question

Is there a way to open the Twitter app from my own application?

For example, I have my own Android app and I want to open Twitter app using Intent.
How can I do that?
Answers with example would be much appreciated.

Answer 1

If the user already has Twitter installed on their phone, something like this should take care of it:

    try{
            Intent intent = new Intent(Intent.ACTION_SEND);
            intent.putExtra(Intent.EXTRA_TEXT, "this is a tweet");
            intent.setType("text/plain");
            final PackageManager pm = getPackageManager();
            final List<?> activityList = pm.queryIntentActivities(intent, 0);
            int len =  activityList.size();
            for (int i = 0; i < len; i++) {
                final ResolveInfo app = (ResolveInfo) activityList.get(i);
                if ("com.twitter.android.PostActivity".equals(app.activityInfo.name)) {
                    final ActivityInfo activity=app.activityInfo;
                    final ComponentName name=new ComponentName(activity.applicationInfo.packageName, activity.name);
                    intent.addCategory(Intent.CATEGORY_LAUNCHER);
                    intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED);
                    intent.setComponent(name);
                    startActivity(intent);
                    break;
                }
            }
      }
        catch(final ActivityNotFoundException e) {
            Log.i("twitter", "no twitter native",e );
        }