43. Exercise: More Weather Details

In this exercise, you'll set up the Details Activity to use CursorLoaders (just like we did with the Forecast Activity) to display more weather information in the Detail Layout.

Exercise Code

Exercise: S09.05-Exercise-MoreDetails

The new Detail Layout should include a text view for each of the following in a Linear Layout:

• The selected day's date
• The selected day's weather description
• The selected day's high temperature
• The selected day's low temperature
• The selected day's humidity
• The selected day's pressure
• The selected day's wind information
  And then update the DetailActivity to find those views by ID and initialize them in onCreate

Create a projection array of Strings and indices to help query weather details for that date!

Then set the DetailActivity class to implement LoaderManager.LoaderCallbacks and override the appropriate methods:

• onCreateLoader: Checks if the loader requested is our detail loader, return the appropriate CursorLoader.
• onLoadFinished: Gets all the weather detail information from the cursor and displays them in the appropriate views.
• onLoaderReset: Don't do anything in it yet

Initialize the loader in DetailActivity's onCreate

Then Update the ForecastAdapterOnClickHandler and refactor onClick to accept a long as its parameter rather than a String and in onClick instead of passing the String for the clicked item, pass the date from the cursor.

And finally refactor MainActivity's onClick to build a URI for the clicked date and and pass it to the DetailActivty with the Intent using setData.