<ImageView    android:id="@+id/item_image"    android:layout_width="100dp"    android:layout_height="140dp"    android:layout_margin="10dp"    android:transitionName="transitionImg"    android:src="@mipmap/qq"    />

 @Override  protected void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentView(R.layout.activity_main);    iv= (ImageView) findViewById(R.id.item_image);  }  public void click(View view)  {    if (android.os.Build.VERSION.SDK_INT > 20) {      intent = new Intent(this,HomeActivity.class);      startActivity(intent, ActivityOptions.makeSceneTransitionAnimation(MainActivity.this, iv, "transitionImg").toBundle());    } else {      startActivity(intent);    }  }