Google Handwriting Input is a nice application which enables you to input text by handwriting it on your Android mobile device. You can also go for the old method of typing using the keyboard if you think it's faster that way. Straight way, you'll be happy to hear that it comes with support for 100 languages, and you can write with or without a stylus.
Another interesting aspect of this application is the fact that you can enter emojis by drawing them inside the text box. As you're writing, the app enters the text inside the box and you should check if everything is detected correctly.