在Android Instrumentation测试期间无法以编程方式旋转屏幕

Question

I am trying to rotate my android emulator screen to landscape mode to trigger some layout changes, but methods setOrientationLeft() or setOrientationRight() are not working. Note that in my AndroidManifest.xml file I am making sure the activity is not set any orientation.

@Test
public void test4RotateScreenToGetSignature()throws Exception {
    .
    .
    .
    mDevice.setOrientationLeft();
    assertSignatureViewVisible();
    mDevice.swipe(200, 1400, 400, 1600, 10);
    mDevice.swipe(400, 1400, 200, 1600, 10);
    .
    .
}