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Android Build a Self-Destructing Message Android App Starting the App Introducing the Project

Ricky Sparks
Ricky Sparks
22,249 Points
Posted by Ricky Sparks
Ricky Sparks
22,249 Points

My Java code for Message-Destruction App won't pass?

The code below is excerpted from the finished Ribbit app. There are two errors in it: find and fix them! Read line by line, even character by character if you have to.

Ricky Sparks
Ricky Sparks
22,249 Points
Ricky Sparks
Ricky Sparks
22,249 Points

Intent recipientsIntent = new Intent(this, RecipientsActivity.class); recipientsIntent.setData(mMediaUri); // mMediaUri is defined and set elsewhere recipientsIntent.putExtra("file_type", "image"); startActivity(Intent);

Ricky Sparks
Ricky Sparks
22,249 Points
Ricky Sparks
Ricky Sparks
22,249 Points

Yes thanks for asking :D

4 Answers

james white
james white
78,399 Points

This is actually not called the "My Java" challenge, but the "Introducing the Project" challenge: http://teamtreehouse.com/library/introducing-the-project-2

The starting (given) warmup.java code was:

Intent recipientsIntent = new Intent(this, RecipientsActivity.class)
recipientsIntent.setData(mMediaUri); // mMediaUri is defined and set elsewhere
recipientsIntent.putExtra("file_type", "image");
startActivity(thisIsTheWrongIntent);

You'll notice that Ricky correctly got the first edit in his posted code above by adding a semi-colon to the end of the first line:

Intent recipientsIntent = new Intent(this, RecipientsActivity.class);

Daniel then provided the needed adjustment to the last line.

However I looked up the github version of this code here: https://github.com/treehouse/android-ribbit/blob/master/src/com/teamtreehouse/ribbit/MainActivity.java

Here is the chunk of code that was excerpted:

Intent recipientsIntent = new Intent(this, RecipientsActivity.class);
recipientsIntent.setData(mMediaUri);String fileType;
if (requestCode == PICK_PHOTO_REQUEST || requestCode == TAKE_PHOTO_REQUEST) {
  fileType = ParseConstants.TYPE_IMAGE;
  }
  else {
  fileType = ParseConstants.TYPE_VIDEO;
  }
recipientsIntent.putExtra(ParseConstants.KEY_FILE_TYPE, fileType);
startActivity(recipientsIntent);

You'll notice that the third line reads not:

recipientsIntent.putExtra("file_type", "image");

but this line instead:

recipientsIntent.putExtra(ParseConstants.KEY_FILE_TYPE, fileType);

However, taking the time to look up the actual code won't help you because this actually (real) MainActivity.java code will not pass the challenge test.

So I really don't know what the purpose of this challenge was/is...?

Daniel Hartin
Daniel Hartin
18,106 Points
Daniel Hartin
Daniel Hartin
18,106 Points

Hi Ricky

I think the intent variable is named recipientsIntent not simply intent

startActivity(recipentsIntent);

Hope this helps

Daniel

Charles Welbeck
PLUS
Charles Welbeck
Courses Plus Student 9,745 Points
Charles Welbeck
Charles Welbeck
Courses Plus Student 9,745 Points 
// The code below is an excerpt from this finished app

Intent recipientsIntent = new Intent(this, RecipientsActivity.class);
recipientsIntent.setData(mMediaUri); // mMediaUri is defined and set elsewhere
recipientsIntent.putExtra("file_type", "image");
startActivity(recipentsIntent);
Joe Goodall
Joe Goodall
3,483 Points
Joe Goodall
Joe Goodall
3,483 Points

Sorry to be pedantic but there is an 'i' missing from the last line.

Should read startActivity(recipientsIntent); rather than startActivity(recipentsIntent);.

Emmanuel Niyenzima
Emmanuel Niyenzima
2,711 Points
Emmanuel Niyenzima
Emmanuel Niyenzima
2,711 Points

// The code below is an excerpt from this finished app

Intent recipientsIntent = new Intent(this, RecipientsActivity.class); recipientsIntent.setData(mMediaUri); // mMediaUri is defined and set elsewhere recipientsIntent.putExtra("file_type", "image"); startActivity( recipientsIntent);

TheBigoso /\
TheBigoso /\
3,217 Points

Intent recipientsIntent = new Intent(this, RecipientsActivity.class); recipientsIntent.setData(mMediaUri); // mMediaUri is defined and set elsewhere recipientsIntent.putExtra("file_type", "image"); startActivity( recipientsIntent);