Android Application Development Cookbook: 93 Recipes for Building Winning Apps

By Wei-Meng Lee

A must-have selection of ready-to-use Android recipes!

The acclaim for Google Android units is apparently unstoppable and the Android four liberate bargains, for the 1st time, a unmarried OS answer for development either mobilephone and pill purposes. With that interesting info in brain, veteran writer Wei-Meng Lee provides you with a hundred certain recipes so you might follow this present day which will detect options to a couple of the main more often than not encountered difficulties that exist in Android programming.

Covering the scope of a number of Android releases up via Android four, this reference encompasses a job description, via the solution(s) on hand, and a standalone venture dossier that illustrates using the recipe. Formatting every one recipe to be standalone, Wei-Meng Lee helps you to bounce into the correct recipe to discover an answer to express challenges.

  • Identifies and describes a programming job, presents a step by step answer, and offers a full-code resolution prepared for download
  • Covers a number of Android releases
  • Addresses such themes as consumer interfaces, telephony and messaging, networking, Google maps, location-based providers, persisting facts, leveraging good points, and more

Android program improvement Cookbook is your option to discovering...solutions!

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SetImageResource(imageIds[position]); go back rowView; } } discover that it's very just like the only within the prior part, other than that now you're making use of a ViewContainer item (which you may have outlined to comprise the ImageView and TextViews) to shop the person rows within the ListView. As each one row is displayed, you payment if it was once formerly created. If it was once no longer, you create a brand new ViewContainer item to shop the row. If it used to be formerly created, you retrieve the kept ViewContainer item after which reuse it.

View; public classification MainActivity extends task { @Override public void onCreate(Bundle savedInstanceState) { large. onCreate(savedInstanceState); setContentView(R. structure. activity_main); } public void onClick(View view) { reason i = new Intent("net. learn2develop. SecondActivity"); //---use putExtra() so as to add new key/value pairs--i. putExtra("str1", "This is a string"); i. putExtra("age1", 25); } } The previous statements create an rationale item after which connect values to it utilizing the putExtra() process: one for a string and one for an integer.

Motion. major" /> That’s it! If the person attempts to name a host that's outlined on your BroadcastReceiver type, the decision aren't profitable. Recipe four. five   Auto-Answering an Incoming name Android types point 1 and above Permissions android.

6  Displaying a listing of things utilizing the Spinner View  As you scroll the checklist upward, extra rows are displayed. As proven in Figure 3-13, those rows were recycled. Figure 3-13 Recipe three. 6  Displaying an inventory of things utilizing the Spinner View Android models point 1 and above Permissions None resource Code to obtain from Wrox. com Spinner. zip ❘  one hundred twenty five 126  ❘  bankruptcy three  showing Lists of things and Images as well as utilizing the ListView to demonstrate a listing of things, you may also use the Spinner view.

SetOnItemClickListener(new OnItemClickListener() { public void onItemClick(AdapterView father or mother, View v, int place, lengthy identity) { Toast. makeText(getBaseContext(), "pic" + (position + 1) + " selected", Toast. LENGTH_SHORT). show(); } }); } ❘  139 140  ❘  bankruptcy three  showing Lists of things and Images public category ImageAdapter extends BaseAdapter { inner most Context context; public ImageAdapter(Context c) { context = c; } //---returns the variety of images--public int getCount() { go back imageIDs.

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