PanoramaImageView: Vista panorámica

implementation 'com.gjiazhe:PanoramaImageView:1.0'

    <com.gjiazhe.panoramaimageview.PanoramaImageView
        android:id="@+id/panorama_image_view"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:src="@drawable/japon"
        app:piv_enablePanoramaMode="true"
        app:piv_show_scrollbar="true"
        app:piv_invertScrollDirection="false" />

panoramaImageView.setEnablePanoramaMode(true);
panoramaImageView.setEnableScrollbar(true);
panoramaImageView.setInvertScrollDirection(false);

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import com.gjiazhe.panoramaimageview.GyroscopeObserver;
import com.gjiazhe.panoramaimageview.PanoramaImageView;

public class MainActivity extends AppCompatActivity {

    private GyroscopeObserver gyroscopeObserver;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        // Initialize GyroscopeObserver.
        gyroscopeObserver = new GyroscopeObserver();
        // Set the maximum radian the device should rotate to show image's bounds.
        // It should be set between 0 and ?/2.
        // The default value is ?/9.
        gyroscopeObserver.setMaxRotateRadian(Math.PI/2);
        PanoramaImageView panoramaImageView = (PanoramaImageView) findViewById(R.id.panorama_image_view);
        // Set GyroscopeObserver for PanoramaImageView.
        panoramaImageView.setGyroscopeObserver(gyroscopeObserver);

    }

    @Override
    protected void onResume() {
        super.onResume();
        // Register GyroscopeObserver.
        gyroscopeObserver.register(this);
    }

    @Override
    protected void onPause() {
        super.onPause();
        // Unregister GyroscopeObserver.
        gyroscopeObserver.unregister();
    }

}

panoramaImageView.setOnPanoramaScrollListener(new PanoramaImageView.OnPanoramaScrollListener() {
    @Override
    public void onScrolled(PanoramaImageView view, float offsetProgress) {
        // Do something here.
        // The offsetProgress range from -1 to 1, indicating the image scrolls
        // from left(top) to right(bottom).
    }
});