Saving notes to persistent storage

The note taking app now has the ability to add a new note to the editor, allowing the…user to type in new information or to edit an existing note.…But in neither case is it saving changes to persistent storage.…And that's the feature that I'll add next. I'm working in a version of the project…called save note that continues from the last exercise.…The first step in saving data, is to pass data from the editor activity back to the…main activity. So, I'll go to the note editor activity…class I'll expand to full screen and I'm going to add a couple of features.…

First of all, I'm going to add a new method that I'll call, save and finish.…When you go from one activity to another activity, returning to the previous…activity is called finishing. And there's a method named finish you can…use to make that happen. But before you call that method, if you…want to pass data back, you have take a few other steps.…I'll create a new private void method, that I'll call saveAndFinish.…The first step when the user touches the back button, is to get the text that…