Android™ Application Development - Bahar Ali Khan

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Chapter 7: Maps, Geocoding, and Location-Based Services 228 The actual zoom level available for a specifi c location depends on the resolution of Google’s maps and imagery for that area. You can also use zoomIn and zoomOut to change the zoom level by one step. The setCenter method will “jump” to a new location; to show a smooth transition, use animateTo as shown in the code below: mapController.animateTo(point); Mapping “Where Am I?” In the following code example, the “Where Am I?” project is extended again. This time you’ll add mapping functionality by transforming it into a Map Activity. As the device location changes, the map will automatically re-center on the new position. 1. Start by adding the uses-permission tag for Internet access to the application manifest. Also import the Android maps library within the application tag. 2. Change the inheritance of WhereAmI to descend from MapActivity instead of Activity. You’ll also need to include an override for the isRouteDisplayed method. Because this Activity won’t show routing directions, you can return false. public class WhereAmI extends MapActivity { } @Override protected boolean isRouteDisplayed() { return false; } [ ... existing Activity code ... ]
Chapter 7: Maps, Geocoding, and Location-Based Services 3. Modify the main.xml layout resource to include a MapView using the fully qualifi ed class name. Be sure to include an android:apikey attribute within the com.android.MapView node. If you have an Android maps API key, use it here. 4. Running the application now should display the original geolocation text, with a MapView beneath it, as shown in Figure 7-6. Figure 7-6 229
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Professional Android Application su
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Professional Android Application D
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Professional Android Application D
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About the Author Originally from Pe
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Acknowledgments A big thank you goe
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Contents Chapter 2: Getting Started
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Contents xii Saving and Loading Fil
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Contents Chapter 10: Accessing Andr
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Introduction Now is an exciting tim
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Introduction covered, you can move
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Introduction At http://p2p.wrox.com
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Chapter 1: Hello, Android 2 Using t
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Chapter 1: Hello, Android An Open P
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Chapter 1: Hello, Android 6 ❑ ❑
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Chapter 1: Hello, Android 8 When ma
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Chapter 1: Hello, Android 10 In mar
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Chapter 1: Hello, Android 12 Each A
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Chapter 1: Hello, Android 14 ❑ Da
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Chapter 1: Hello, Android 16 ❑ an
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Getting Started All you need to sta
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Chapter 2: Getting Started Unless o
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Installing the ADT Plug-in Install
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Chapter 2: Getting Started 3. In th
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Chapter 2: Getting Started If every
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} lp = new LinearLayout.LayoutParam
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❑ ❑ ❑ ❑ ❑ Small screens w
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Chapter 2: Getting Started on how t
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Chapter 2: Getting Started To start
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Ensuring a Seamless User Experience
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Figure 2-11 Chapter 2: Getting Star
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} myListView.setAdapter(aa); Chapte
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Chapter 2: Getting Started A number
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Creating Applications and Activitie
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Chapter 3: Creating Applications an
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Creating Resources Chapter 3: Creat
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❑ ❑ #ARGB #ARRGGBB Chapter 3: C
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android:startOffset=”500” andro
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Referencing Resources in Resources
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} } Chapter 3: Creating Application
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Chapter 4: Creating User Interfaces
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Chapter 5: Intents, Broadcast Recei
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Data Storage, Retrieval, and Sharin
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Chapter 6: Data Storage, Retrieval,
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} Chapter 6: Data Storage, Retrieva
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} Chapter 6: Data Storage, Retrieva
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Peer-to-Peer Communication In this
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Chapter 9: Peer-to-Peer Communicati
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} Chapter 9: Peer-to-Peer Communica
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Handling Subscription Requests Chap
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Figure 9-4 Chapter 9: Peer-to-Peer
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Accessing Android Hardware Android
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Chapter 10: Accessing Android Hardw
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content.put(Audio.AudioColumns.DATE
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public void onShutter() { // TODO D
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public void setPitch(float pitch) {
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} setContentView(R.layout.main); Ch
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Chapter 11: Advanced Android Develo
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400 Android, getting started Androi
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402 databases databases creating ea
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404 interapplication communication
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406 passing custom class objects pa
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408 synchronizing threads synchroni
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Android™ Application Development - Bahar Ali Khan

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