Android Boot Camp for Developers Using Java 3
![Android Boot Camp for Developers Using Java, 3 E Chapter 5: Investigate! Android Lists, Android Boot Camp for Developers Using Java, 3 E Chapter 5: Investigate! Android Lists,](https://slidetodoc.com/presentation_image/03d7649e41811e29f552333f5a1b3b36/image-1.jpg)
Android Boot Camp for Developers Using Java, 3 E Chapter 5: Investigate! Android Lists, Arrays, and Web Browsers Android Boot Camp for Developers Using Java, 3 rd Ed. © 2016 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 1
![Objectives In this chapter, you learn to: • Create an Android project using a Objectives In this chapter, you learn to: • Create an Android project using a](http://slidetodoc.com/presentation_image/03d7649e41811e29f552333f5a1b3b36/image-2.jpg)
Objectives In this chapter, you learn to: • Create an Android project using a list • Develop a user interface that uses List. View • Extend the List. Activity class • Use an array to create a list • Code a set. List. Adapter to display an array • Design a custom List. View layout with XML code • Display an image with the List. View control • Change the default title bar text Android Boot Camp for Developers Using Java, 3 rd Ed. © 2016 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 2
![Objectives (continued) • Code a custom set. List. Adapter for a custom layout • Objectives (continued) • Code a custom set. List. Adapter for a custom layout •](http://slidetodoc.com/presentation_image/03d7649e41811e29f552333f5a1b3b36/image-3.jpg)
Objectives (continued) • Code a custom set. List. Adapter for a custom layout • Call the on. List. Item. Click method when a list item is selected • Write code using the Switch decision structure • Call an intent to work with an outside app • Open an Android Web browser • Launch a Web site through the use of a URI using an Android browser • Test an application with multiple decisions Android Boot Camp for Developers Using Java, 3 rd Ed. © 2016 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 3
![Creating a List • Lists are one of the most common designs in mobile Creating a List • Lists are one of the most common designs in mobile](http://slidetodoc.com/presentation_image/03d7649e41811e29f552333f5a1b3b36/image-4.jpg)
Creating a List • Lists are one of the most common designs in mobile apps – Scrollable – Selectable – Programmable to bring up the next Activity (screen) Android Boot Camp for Developers Using Java, 3 rd Ed. © 2016 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 4
![Creating a List (continued) Android Boot Camp for Developers Using Java, 3 rd Ed. Creating a List (continued) Android Boot Camp for Developers Using Java, 3 rd Ed.](http://slidetodoc.com/presentation_image/03d7649e41811e29f552333f5a1b3b36/image-5.jpg)
Creating a List (continued) Android Boot Camp for Developers Using Java, 3 rd Ed. © 2016 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 5
![Creating a List (continued) Android Boot Camp for Developers Using Java, 3 rd Ed. Creating a List (continued) Android Boot Camp for Developers Using Java, 3 rd Ed.](http://slidetodoc.com/presentation_image/03d7649e41811e29f552333f5a1b3b36/image-6.jpg)
Creating a List (continued) Android Boot Camp for Developers Using Java, 3 rd Ed. © 2016 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 6
![Creating a List (continued) • Steps to complete the app: 1. 2. 3. 4. Creating a List (continued) • Steps to complete the app: 1. 2. 3. 4.](http://slidetodoc.com/presentation_image/03d7649e41811e29f552333f5a1b3b36/image-7.jpg)
Creating a List (continued) • Steps to complete the app: 1. 2. 3. 4. Create a list using a List. View control. Define an array to establish the items of the list. Add the images used in the project. Define an XML file to design the custom list with a leading image. 5. Code a Switch decision structure to handle the selection of items. 6. Open an Android Web browser to display a specified Uniform Resource Identifier (URI). 7. Create multiple classes and XML layout files to display pictures of attractions. Android Boot Camp for Developers Using Java, 3 rd Ed. © 2016 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 7
![Creating a List (continued) • Opening screen contains a vertical list of attractions • Creating a List (continued) • Opening screen contains a vertical list of attractions •](http://slidetodoc.com/presentation_image/03d7649e41811e29f552333f5a1b3b36/image-8.jpg)
Creating a List (continued) • Opening screen contains a vertical list of attractions • List is automatically scrollable if it exceeds the window size • List. View is better than Table. Layout View because each row can be selected for further action • Selecting an item opens up a related Web page or an image of the attraction Android Boot Camp for Developers Using Java, 3 rd Ed. © 2016 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 8
![Extending a List. Activity • A List. Activity class is needed to display a Extending a List. Activity • A List. Activity class is needed to display a](http://slidetodoc.com/presentation_image/03d7649e41811e29f552333f5a1b3b36/image-9.jpg)
Extending a List. Activity • A List. Activity class is needed to display a list of items • An Expandedlist. View can be used to provide a two-level list Android Boot Camp for Developers Using Java, 3 rd Ed. © 2016 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 9
![Extending a List. Activity Android Boot Camp for Developers Using Java, 3 rd Ed. Extending a List. Activity Android Boot Camp for Developers Using Java, 3 rd Ed.](http://slidetodoc.com/presentation_image/03d7649e41811e29f552333f5a1b3b36/image-10.jpg)
Extending a List. Activity Android Boot Camp for Developers Using Java, 3 rd Ed. (continued) © 2016 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 10
![Extending a List. Activity Android Boot Camp for Developers Using Java, 3 rd Ed. Extending a List. Activity Android Boot Camp for Developers Using Java, 3 rd Ed.](http://slidetodoc.com/presentation_image/03d7649e41811e29f552333f5a1b3b36/image-11.jpg)
Extending a List. Activity Android Boot Camp for Developers Using Java, 3 rd Ed. (continued) © 2016 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 11
![Extending a List. Activity Android Boot Camp for Developers Using Java, 3 rd Ed. Extending a List. Activity Android Boot Camp for Developers Using Java, 3 rd Ed.](http://slidetodoc.com/presentation_image/03d7649e41811e29f552333f5a1b3b36/image-12.jpg)
Extending a List. Activity Android Boot Camp for Developers Using Java, 3 rd Ed. (continued) © 2016 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 12
![Creating an Array • Array variables can store more than one value • Different Creating an Array • Array variables can store more than one value • Different](http://slidetodoc.com/presentation_image/03d7649e41811e29f552333f5a1b3b36/image-13.jpg)
Creating an Array • Array variables can store more than one value • Different from other data types that can hold only one value • Each individual item in an array is called an element • Refer to each element using an index in the array Android Boot Camp for Developers Using Java, 3 rd Ed. © 2016 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 13
![Declaring an Array • Square brackets [ ] are used to define an array Declaring an Array • Square brackets [ ] are used to define an array](http://slidetodoc.com/presentation_image/03d7649e41811e29f552333f5a1b3b36/image-14.jpg)
Declaring an Array • Square brackets [ ] are used to define an array • Curley braces { } contain the list of items in the array Android Boot Camp for Developers Using Java, 3 rd Ed. © 2016 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 14
![Using a set. List. Adapter and Array Adapter • An adapter provides a model Using a set. List. Adapter and Array Adapter • An adapter provides a model](http://slidetodoc.com/presentation_image/03d7649e41811e29f552333f5a1b3b36/image-15.jpg)
Using a set. List. Adapter and Array Adapter • An adapter provides a model for the layout and converts the data into a list • The set. List. Adapter connects the list items to the images or Web pages they represent • An array adapter supplies the array data to the List. View Android Boot Camp for Developers Using Java, 3 rd Ed. © 2016 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 15
![Using a set. List. Adapter and Array Adapter (continued) Android Boot Camp for Developers Using a set. List. Adapter and Array Adapter (continued) Android Boot Camp for Developers](http://slidetodoc.com/presentation_image/03d7649e41811e29f552333f5a1b3b36/image-16.jpg)
Using a set. List. Adapter and Array Adapter (continued) Android Boot Camp for Developers Using Java, 3 rd Ed. © 2016 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 16
![Using a set. List. Adapter and Array Adapter (continued) Android Boot Camp for Developers Using a set. List. Adapter and Array Adapter (continued) Android Boot Camp for Developers](http://slidetodoc.com/presentation_image/03d7649e41811e29f552333f5a1b3b36/image-17.jpg)
Using a set. List. Adapter and Array Adapter (continued) Android Boot Camp for Developers Using Java, 3 rd Ed. © 2016 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 17
![Adding the Images to the Resources Folder • Images must be located in the Adding the Images to the Resources Folder • Images must be located in the](http://slidetodoc.com/presentation_image/03d7649e41811e29f552333f5a1b3b36/image-18.jpg)
Adding the Images to the Resources Folder • Images must be located in the drawable-hdpi folder • Remember that images may be subject to copyright laws Android Boot Camp for Developers Using Java, 3 rd Ed. © 2016 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 18
![Adding the String Table Android Boot Camp for Developers Using Java, 3 rd Ed. Adding the String Table Android Boot Camp for Developers Using Java, 3 rd Ed.](http://slidetodoc.com/presentation_image/03d7649e41811e29f552333f5a1b3b36/image-19.jpg)
Adding the String Table Android Boot Camp for Developers Using Java, 3 rd Ed. © 2016 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 19
![Creating a Custom XML Layout for a List. View Android Boot Camp for Developers Creating a Custom XML Layout for a List. View Android Boot Camp for Developers](http://slidetodoc.com/presentation_image/03d7649e41811e29f552333f5a1b3b36/image-20.jpg)
Creating a Custom XML Layout for a List. View Android Boot Camp for Developers Using Java, 3 rd Ed. © 2016 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 20
![Creating a Custom XML Layout for a List. View (continued) ) Android Boot Camp Creating a Custom XML Layout for a List. View (continued) ) Android Boot Camp](http://slidetodoc.com/presentation_image/03d7649e41811e29f552333f5a1b3b36/image-21.jpg)
Creating a Custom XML Layout for a List. View (continued) ) Android Boot Camp for Developers Using Java, 3 rd Ed. © 2016 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 21
![Coding a set. List. Adapter with a Custom XML Layout • Built-in layout is Coding a set. List. Adapter with a Custom XML Layout • Built-in layout is](http://slidetodoc.com/presentation_image/03d7649e41811e29f552333f5a1b3b36/image-22.jpg)
Coding a set. List. Adapter with a Custom XML Layout • Built-in layout is called simple_list_item_1 Android Boot Camp for Developers Using Java, 3 rd Ed. © 2016 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 22
![Coding a set. List. Adapter with a Custom XML Layout (continued) Android Boot Camp Coding a set. List. Adapter with a Custom XML Layout (continued) Android Boot Camp](http://slidetodoc.com/presentation_image/03d7649e41811e29f552333f5a1b3b36/image-23.jpg)
Coding a set. List. Adapter with a Custom XML Layout (continued) Android Boot Camp for Developers Using Java, 3 rd Ed. © 2016 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 23
![Using the on. List. Item. Click method • on. List. Item. Click() is called Using the on. List. Item. Click method • on. List. Item. Click() is called](http://slidetodoc.com/presentation_image/03d7649e41811e29f552333f5a1b3b36/image-24.jpg)
Using the on. List. Item. Click method • on. List. Item. Click() is called when an item from the list is selected • The item’s position in the list is captured so the app knows which of the items was selected • The position represents the number of the item in the list Android Boot Camp for Developers Using Java, 3 rd Ed. © 2016 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 24
![Using the on. List. Item. Click method Android Boot Camp for Developers Using Java, Using the on. List. Item. Click method Android Boot Camp for Developers Using Java,](http://slidetodoc.com/presentation_image/03d7649e41811e29f552333f5a1b3b36/image-25.jpg)
Using the on. List. Item. Click method Android Boot Camp for Developers Using Java, 3 rd Ed. © 2016 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. (continued) 25
![Decision Structure – Switch Statement • If statements are also decision structures • The Decision Structure – Switch Statement • If statements are also decision structures • The](http://slidetodoc.com/presentation_image/03d7649e41811e29f552333f5a1b3b36/image-26.jpg)
Decision Structure – Switch Statement • If statements are also decision structures • The switch statement is used when there are many list items to be evaluated • Can only evaluate integers or single characters • The keyword case is used to test each item • The keyword break is used to exit the switch decision structure Android Boot Camp for Developers Using Java, 3 rd Ed. © 2016 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 26
![Decision Structure – Switch Statement (continued) Android Boot Camp for Developers Using Java, 3 Decision Structure – Switch Statement (continued) Android Boot Camp for Developers Using Java, 3](http://slidetodoc.com/presentation_image/03d7649e41811e29f552333f5a1b3b36/image-27.jpg)
Decision Structure – Switch Statement (continued) Android Boot Camp for Developers Using Java, 3 rd Ed. © 2016 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 27
![Decision Structure – Switch Statement (continued) Android Boot Camp for Developers Using Java, 3 Decision Structure – Switch Statement (continued) Android Boot Camp for Developers Using Java, 3](http://slidetodoc.com/presentation_image/03d7649e41811e29f552333f5a1b3b36/image-28.jpg)
Decision Structure – Switch Statement (continued) Android Boot Camp for Developers Using Java, 3 rd Ed. © 2016 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 28
![Android Intents • Android intents send and receive activities and services including: – – Android Intents • Android intents send and receive activities and services including: – –](http://slidetodoc.com/presentation_image/03d7649e41811e29f552333f5a1b3b36/image-29.jpg)
Android Intents • Android intents send and receive activities and services including: – – – – Opening a Web page in a browser Calling a phone number Locating a GPS position on a map Posting notes to a note-taking program Opening your contacts list Sending a photo Posting to a social network Android Boot Camp for Developers Using Java, 3 rd Ed. © 2016 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 29
![Launching the Browser from an Android Device • The intent sends the browser a Launching the Browser from an Android Device • The intent sends the browser a](http://slidetodoc.com/presentation_image/03d7649e41811e29f552333f5a1b3b36/image-30.jpg)
Launching the Browser from an Android Device • The intent sends the browser a URI (Uniform Resource Identifier) • URI is similar to URL (Uniform Resource Locator) • URI has additional information necessary for gaining access to the resources required for posting the page • The action called ACTION_VIEW (must be in CAPS) is what actually displays the page in the browser • ACTION_VIEW is the most common action performed on data Android Boot Camp for Developers Using Java, 3 rd Ed. © 2016 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 30
![Launching the Browser from an Android Device (continued) Android Boot Camp for Developers Using Launching the Browser from an Android Device (continued) Android Boot Camp for Developers Using](http://slidetodoc.com/presentation_image/03d7649e41811e29f552333f5a1b3b36/image-31.jpg)
Launching the Browser from an Android Device (continued) Android Boot Camp for Developers Using Java, 3 rd Ed. © 2016 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 31
![Launching the Browser from an Android Device (continued) Android Boot Camp for Developers Using Launching the Browser from an Android Device (continued) Android Boot Camp for Developers Using](http://slidetodoc.com/presentation_image/03d7649e41811e29f552333f5a1b3b36/image-32.jpg)
Launching the Browser from an Android Device (continued) Android Boot Camp for Developers Using Java, 3 rd Ed. © 2016 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 32
![Launching the Browser from an Android Device (continued) Android Boot Camp for Developers Using Launching the Browser from an Android Device (continued) Android Boot Camp for Developers Using](http://slidetodoc.com/presentation_image/03d7649e41811e29f552333f5a1b3b36/image-33.jpg)
Launching the Browser from an Android Device (continued) Android Boot Camp for Developers Using Java, 3 rd Ed. © 2016 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 33
![Adding Multiple Class Files • Class Files are needed to display images on the Adding Multiple Class Files • Class Files are needed to display images on the](http://slidetodoc.com/presentation_image/03d7649e41811e29f552333f5a1b3b36/image-34.jpg)
Adding Multiple Class Files • Class Files are needed to display images on the screen when the user selects options – An on. Create method requests that the user interface opens to display an image of the attraction Android Boot Camp for Developers Using Java, 3 rd Ed. © 2016 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 34
![Adding Multiple Class Files Android Boot Camp for Developers Using Java, 3 rd Ed. Adding Multiple Class Files Android Boot Camp for Developers Using Java, 3 rd Ed.](http://slidetodoc.com/presentation_image/03d7649e41811e29f552333f5a1b3b36/image-35.jpg)
Adding Multiple Class Files Android Boot Camp for Developers Using Java, 3 rd Ed. (continued) © 2016 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 35
![Designing XML Layout Files Android Boot Camp for Developers Using Java, 3 rd Ed. Designing XML Layout Files Android Boot Camp for Developers Using Java, 3 rd Ed.](http://slidetodoc.com/presentation_image/03d7649e41811e29f552333f5a1b3b36/image-36.jpg)
Designing XML Layout Files Android Boot Camp for Developers Using Java, 3 rd Ed. © 2016 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 36
![Designing XML Layout Files Android Boot Camp for Developers Using Java, 3 rd Ed. Designing XML Layout Files Android Boot Camp for Developers Using Java, 3 rd Ed.](http://slidetodoc.com/presentation_image/03d7649e41811e29f552333f5a1b3b36/image-37.jpg)
Designing XML Layout Files Android Boot Camp for Developers Using Java, 3 rd Ed. (continued) © 2016 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 37
![Designing XML Layout Files Android Boot Camp for Developers Using Java, 3 rd Ed. Designing XML Layout Files Android Boot Camp for Developers Using Java, 3 rd Ed.](http://slidetodoc.com/presentation_image/03d7649e41811e29f552333f5a1b3b36/image-38.jpg)
Designing XML Layout Files Android Boot Camp for Developers Using Java, 3 rd Ed. (continued) © 2016 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 38
![Opening the Class Files • A start. Activity method opens the next Activity, which Opening the Class Files • A start. Activity method opens the next Activity, which](http://slidetodoc.com/presentation_image/03d7649e41811e29f552333f5a1b3b36/image-39.jpg)
Opening the Class Files • A start. Activity method opens the next Activity, which in turn launches the appropriate XML layout displaying an image of the attraction Android Boot Camp for Developers Using Java, 3 rd Ed. © 2016 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 39
![Running and Testing the Application • Make sure all the fields can gracefully handle Running and Testing the Application • Make sure all the fields can gracefully handle](http://slidetodoc.com/presentation_image/03d7649e41811e29f552333f5a1b3b36/image-40.jpg)
Running and Testing the Application • Make sure all the fields can gracefully handle any tap or click or any value entered in any Android app • Testing an Android app is called usability testing – In addition to the traditional navigation and ease of use, Section 508 compliance is a third component to be tested – The 1998 Amendment to Section 508 of the Rehabilitation Act spells out accessibility requirements for individuals with certain disabilities – For more details, refer to www. section 508. gov Android Boot Camp for Developers Using Java, 3 rd Ed. © 2016 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 40
![Summary • The Java View class creates a list and makes it scrollable; use Summary • The Java View class creates a list and makes it scrollable; use](http://slidetodoc.com/presentation_image/03d7649e41811e29f552333f5a1b3b36/image-41.jpg)
Summary • The Java View class creates a list and makes it scrollable; use a List. View control to select each row for further action • Extend the List. Activity class in Main. java to display a List. View control • Declare list items in an array variable • Array indexes provide access to each element in the list (the list begins with 0) • To declare an array, specify the data type followed by the values Android Boot Camp for Developers Using Java, 3 rd Ed. © 2016 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 41
![Summary (continued) • Use an adapter to display the values in the array • Summary (continued) • Use an adapter to display the values in the array •](http://slidetodoc.com/presentation_image/03d7649e41811e29f552333f5a1b3b36/image-42.jpg)
Summary (continued) • Use an adapter to display the values in the array • A List. View control is a container for the list items and the adapter binds the elements of the array to the List. View layout statements if the condition is false • Drag controls from the palette to the emulator for a simple design • Add code to the main. xml file to get a custom layout Android Boot Camp for Developers Using Java, 3 rd Ed. © 2016 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 42
![Summary (continued) • App names are displayed in the app title bar – can Summary (continued) • App names are displayed in the app title bar – can](http://slidetodoc.com/presentation_image/03d7649e41811e29f552333f5a1b3b36/image-43.jpg)
Summary (continued) • App names are displayed in the app title bar – can be customized • set. List. Adapter has 3 parameters: – this class – The layout used to display the list – The array containing the list values • Code the on. List. Item. Click method to respond to the event of the user’s selection • Use the switch decision structure with a list or menu Android Boot Camp for Developers Using Java, 3 rd Ed. © 2016 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 43
![Summary (continued) • Android intents send and receive activities and services • Test every Summary (continued) • Android intents send and receive activities and services • Test every](http://slidetodoc.com/presentation_image/03d7649e41811e29f552333f5a1b3b36/image-44.jpg)
Summary (continued) • Android intents send and receive activities and services • Test every possible combination of clicks, including incorrect user entries before publishing the app Android Boot Camp for Developers Using Java, 3 rd Ed. © 2016 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 44
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