Question

I found that when we change the orientation of current activity by screen rotation, the previous activity will be recreated in background.

What I’m trying to say is, for example:

I had set the screen orientation for both activity in the manifest file

<activity android:screenOrientation="portrait" android:name="package.PotraitActivity"></activity>
<activity android:screenOrientation="landscape" android:name="package.MyActivity"></activity>

In PotraitActivity.java,

Button mybutton = (Button)findViewById(R.id.mybutton);
mybutton.setOnClickListener(new OnClickListener() {

  @Override
  public void onClick(View view) 
  {  Intent intent = new Intent(this,MyActivity.class);
     startActivity(intent);
  }
});

When clicked on myButton, LandscapeActivity was been started. But at the same time OnCreate() method in PotraitActivity was called as well.

I found the same thing happened when:

1. the screen orientation for both activities is different or
2. Screen rotation is enabled for MyActivity (screenOrientation=”user”). OnCreate() method in PotraitActivity is called every time we rotated MyActivity.

Anyone has idea about this?

Answer 1

Set android:configChanges="orientation" to your package.PotraitActivity activity in manifest. Setting this will ignore the default screen orientation implementation and will give you the control to override it manually.