在Android中以编程方式使用人像和风景模式

Question

I want to create the layouts for both portrait and landscape mode (in java) and change the orientations programmatically in java file. Can anybody help me?

Answer 1

you can programmatically force a change in orientation using the setRequestOrientation() method of the Activity class.

 public class Example extends Activity 
  {
  @Override
    public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    //---change to landscape mode---
    setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
   }
 }

To change to portrait mode, use the ActivityInfo.SCREEN_ORIENTATION_PORTRAIT constant:

For more information, refer this .

EDIT

you can add orientation to your specific Activity in AndroidManifest.xml like this:

 <activity android:name=".DemoActivity"
  android:label="@string/app_name"
  android:screenOrientation="portrait">

As far as Layouts are concerned, it is best advised to create different folders under res/ . For example, you can create res/layout-port for portrait and res/layout-land for landscape.

Answer 2

Try this:

if(context.getResources().getConfiguration().orientation == Configuration.ORIENTATION_LANDSCAPE) 
    {
        // code to do for Landscape Mode     
    } else {

        // code to do for Portrait Mode  
    }