Android Device Orientation

 1 public class MainActivity extends ActionBarActivity {
 2 
 3     
 4     private TextView textView = null;
 5     private MyOrientationListener myOrientationListener = null;
 6     @Override
 7     protected void onCreate(Bundle savedInstanceState) {
 8         super.onCreate(savedInstanceState);
 9         setContentView(R.layout.activity_main);
10         textView = (TextView)findViewById(R.id.textview);
11         myOrientationListener = new MyOrientationListener(this, SensorManager.SENSOR_DELAY_NORMAL);
12         if( myOrientationListener.canDetectOrientation()){
13             myOrientationListener.enable();
14         }
15         else{
16             Toast.makeText(this, "Can‘t Detect Orientation", Toast.LENGTH_LONG).show();
17         }
18     
19     }
20 
21     @Override
22     public boolean onCreateOptionsMenu(Menu menu) {
23         // Inflate the menu; this adds items to the action bar if it is present.
24         getMenuInflater().inflate(R.menu.main, menu);
25         return true;
26     }
27     
28     @Override
29     protected void onDestroy(){
30         super.onDestroy();
31         myOrientationListener.disable();
32     }
33     
34     @Override
35     protected void onResume(){
36         super.onResume();
37         if( myOrientationListener.canDetectOrientation()){
38             myOrientationListener.enable();
39         }
40         else{
41             Toast.makeText(this, "Can‘t Detect Orientation", Toast.LENGTH_LONG).show();
42         }
43     }
44 
45     @Override
46     public boolean onOptionsItemSelected(MenuItem item) {
47         // Handle action bar item clicks here. The action bar will
48         // automatically handle clicks on the Home/Up button, so long
49         // as you specify a parent activity in AndroidManifest.xml.
50         int id = item.getItemId();
51         if (id == R.id.action_settings) {
52             return true;
53         }
54         return super.onOptionsItemSelected(item);
55     }
56     
57     
58     private class MyOrientationListener extends OrientationEventListener{
59 
60         public MyOrientationListener(Context context, int rate) {
61             super(context, rate);
62             // TODO Auto-generated constructor stub
63         }
64 
65         @Override
66         public void onOrientationChanged(int orientation) {
67             // TODO Auto-generated method stub
68             textView.setText("" + orientation);
69         }
70 
71         
72         
73     }
74 }