Exercise: Adding More Features

In this exercise you will get to add a few more features to our app based on the feedback we collected from users.

1. Change the water-all click event in the widget to water only that specific plant shown which involves
   • Add the plantId as a new parameter to the updatePlantWidgets method
   • Change the watering service action from ACTION_WATER_PLANTS to ACTION_WATER_PLANT
   • Change the update query to use a SINGLE_PLANT_URI
   • Define and using EXTRA_PLANT_ID to pass the plant ID to the intent service from the widget
   • Call putExtra and passing the plantId when creating the pending intent for the watering service
   • Call getLongExtra to extract the plnatId in the service
   • Make sure you update the widgets after watering by calling startActionUpdatePlantWidgets
2. Hide the water drop button in the widget if it’s been less than MIN_AGE_BETWEEN_WATER since it was last watered
   • Add a new boolean parameter to updatePlantWidgets to indicate if the plant can be watered or not
   • Use setViewVisibility to change the widget_water_button Visibility from View.VISIBLE to View.INVISIBLE to hide it
3. Change the widget plant image click handler to launch the Detail Activity for that plant rather than the Main Activity
   • If plantId was INVALID_PLANT_ID, then launch the MainActivity as usual
   • Otherwise launch the PlantDetailActivity passing in the plantId as EXTRA_PLANT_ID
4. Add a TextView underneath the plant image that displays the plant ID in both the main activity as well as in the widget to help identify each plant

Exercise Code

Exercise: TWID.04-Exercise-Extras