如何正确的在Fragment中使用ViewFlipper?

Question

public class OneFgm extends Fragment{     private int[] image_resource = {             R.drawable.abookapart1,             R.drawable.bg2015071003,             R.drawable.bg2015071004,             R.drawable.bg2015071010     };     public OneFgm() {     }     public ImageView getImageView(int res_id){         ImageView imageView = new ImageView(getContext());         imageView.setBackgroundResource(res_id);         return imageView;     }     @Override     public void onCreate(@Nullable Bundle savedInstanceState) {         super.onCreate(savedInstanceState);     }     @Nullable     @Override     public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {         View view = inflater.inflate(R.layout.home_layout,container,false);         ViewFlipper flipper = (ViewFlipper) view.findViewById(R.id.flipper);         for (int i : image_resource){             flipper.addView(getImageView(i));         }         flipper.setInAnimation(this.getContext(),R.anim.right_enter);         flipper.setOutAnimation(this.getContext(),R.anim.left_out);         flipper.startFlipping();         return view;     } }不知道为什么没有效果,甚至连图都没有..

Answer 1

你没有为你新建的ImageView指定宽度和高度,默认宽高为0,自然在界面上就看不到