Android图片处理教程之全景查看效果实现

//全景图片
 compile '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/timg"
  app:piv_enablePanoramaMode="true"
  app:piv_show_scrollbar="true"
  app:piv_invertScrollDirection="false" />

 xmlns:app=http://schemas.android.com/apk/res-auto

public class MyActivity 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 π/2.
  // The default value is π/9.
   gyroscopeObserver.setMaxRotateRadian(Math.PI/9);

  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).
 }
});