Question

大家好我正在开发我的应用程序。我需要你的帮助：

我有一个linearlayout，它绘制我用相机扫描的图像我可以多次扫描，制作多个图像文件我想添加一个子视图来显示我在同一视图中扫描的所有图像在那个子视图中，我可以向左，向右滑动以显示连续图像，如音乐播放器中的播放图像
请提出建议：这样做怎么办？非常感谢你！

Answer 1

我认为使用Gallery是更好的选择。

public class GalleryExample extends Activity {

  private Gallery gallery;
  private ImageView imgView;

  private Integer[] Imgid = {
    R.drawable.a_1, R.drawable.a_2, R.drawable.a_3, R.drawable.a_4, R.drawable.a_5,
    R.drawable.a_6, R.drawable.a_7
  };

  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    imgView = (ImageView)findViewById(R.id.ImageView01);
    imgView.setImageResource(Imgid[0]);

    gallery = (Gallery) findViewById(R.id.examplegallery);
    gallery.setAdapter(new AddImgAdp(this));

    gallery.setOnItemClickListener(new OnItemClickListener() {
      public void onItemClick(AdapterView parent, View v, int position, long id) {
        imgView.setImageResource(Imgid[position]);
      }
    });

  }

  public class AddImgAdp extends BaseAdapter {
    int GalItemBg;
    private Context cont;

    public AddImgAdp(Context c) {
      cont = c;
      TypedArray typArray = obtainStyledAttributes(R.styleable.GalleryTheme);
      GalItemBg =
          typArray.getResourceId(R.styleable.GalleryTheme_android_galleryItemBackground, 0);
      typArray.recycle();
    }

    public int getCount() {
      return Imgid.length;
    }

    public Object getItem(int position) {
      return position;
    }

    public long getItemId(int position) {
      return position;
    }

    public View getView(int position, View convertView, ViewGroup parent) {
      ImageView imgView = new ImageView(cont);

      imgView.setImageResource(Imgid[position]);
      imgView.setLayoutParams(new Gallery.LayoutParams(80, 70));
      imgView.setScaleType(ImageView.ScaleType.FIT_XY);
      imgView.setBackgroundResource(GalItemBg);

      return imgView;
    }
  }
}

将图像添加到imageArray并在适配器实例上调用notifyDataSetChanged()方法。更多信息请点击此链接here。

Android如何显示列表图像

1 个答案: