Android Programming Tutorials

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TUTORIAL 8 Sitting in the Background In this tutorial, we will simulate having the LunchList do some background processing in a ...

Sitting in the Background @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); reques ...

Sitting in the Background To do that, first, implement a doSomeLongWork() method on LunchList as follows: private void doSomeLon ...

Sitting in the Background This requires a graphic image in LunchList/res/drawable/run.png – find something that you can use that ...

Sitting in the Background Figure 18. The Run Long Task menu item Step #4: Manage the Progress Bar............................... ...

Sitting in the Background setProgressBarVisibility(true); progress= 0 ; new Thread(longTask).start(); return(true); } return(sup ...

Sitting in the Background At this point, you can rebuild, reinstall, and run the application. When you choose the Run Long Task ...

Sitting in the Background a KillJob that causes the Thread to fall out of its queue-monitoring loop. Further Reading............ ...

TUTORIAL 9 Life and Times In this tutorial, we will make our background task take a bit longer, then arrange to pause the backgr ...

Life and Times for (int i=progress; i< 10000 ; i+= 200 ) { doSomeLongWork( 200 ); } Step #2: Pause in onPause().............. ...

Life and Times Note how we chain to the superclass in onPause() – if we fail to do this, we will get a runtime error. With this ...

Life and Times Toast.makeText(this, message, Toast.LENGTH_LONG).show(); return(true); } else if (item.getItemId()==R.id.run) { s ...

Life and Times While it is running, click the green phone button on the emulator (lower-left corner of the "phone"). This will ...

Life and Times setContentView(R.layout.main); name=(EditText)findViewById(R.id.name); address=(EditText)findViewById(R.id.addr); ...

Life and Times new MenuInflater(this).inflate(R.menu.option, menu); return(super.onCreateOptionsMenu(menu)); } @Override public ...

Life and Times break; case R.id.take_out: current.setType("take_out"); break; case R.id.delivery: current.setType("delivery"); b ...

Life and Times }); } } }; class RestaurantAdapter extends ArrayAdapter { RestaurantAdapter() { super(LunchList.this, R.layout.ro ...

Life and Times icon.setImageResource(R.drawable.ball_yellow); } else { icon.setImageResource(R.drawable.ball_green); } } } } Ext ...

TUTORIAL 10 A Few Good Resources We have already used many types of resources in the preceding tutorials. After reviewing what w ...