Android 从“资源”文件夹加载图像时，图库显示为空白

我正在使用AssetManager从assets/image加载图像，加载过程进行得很顺利，因为我可以看到所有图像都已加载到库中，但库中只显示帧，而不显示图片，我尝试了不同的mime类型png、jpg和bmp，但没有成功

这是我从资产/图像加载图像的方法

private List<String> getImage() throws IOException
  {
    AssetManager assetManager = getAssets();
    String[] files = assetManager.list("image");   
    List<String> it=Arrays.asList(files);
    return it; 

    }

---

logcat打印无错误

只需确保“lis”包含完整的路径名，否则您可能必须在文件名的路径前加上前缀。完成此操作后，请尝试以下更改

    public View getView(int position, View convertView, ViewGroup parent) 
    {
      if (convertView == null) { 
          ImageView i = new ImageView(mContext);
       }
      else { 
          ImageView i = (ImageView) convertView;
       }

      i.setScaleType(ImageView.ScaleType.FIT_XY);
      i.setLayoutParams(new Gallery.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT));

      Bitmap bm = BitmapFactory.decodeFile(lis.
                            get(position).toString());
      i.setImageBitmap(bm);
      return i;
    }     

试着这样做

private List<String> getImage() throws IOException {
        AssetManager assetManager = getAssets();
        String[] files = assetManager.list("image");
        List<String> list = new ArrayList<String>();
        for (String it : files) {
            list.add("image" + File.separator + it);
        }
        return list;

    }





public class ImageAdapter extends BaseAdapter {
        private Context mContext;
        private List<String> list;

        public ImageAdapter(Context c, List<String> list) {
            mContext = c;
            this.list = list;
        }

        @Override
        public int getCount() {
            return list.size();
        }

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

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

        @Override
        public View getView(int position, View convertView, ViewGroup parent) {
            ImageView iv = null;
            try {

                if (convertView == null) {
                    convertView = new ImageView(mContext);
                    ((ImageView) convertView).setAdjustViewBounds(true);
                    convertView.setLayoutParams(new Gallery.LayoutParams(
                            LayoutParams.WRAP_CONTENT,
                            LayoutParams.WRAP_CONTENT));
                    convertView.setBackgroundResource(R.drawable.picture_frame);
                }
                iv = (ImageView) convertView;

                InputStream is = getAssets().open(list.get(position));

                Bitmap bm = BitmapFactory.decodeStream(is);

                iv.setImageBitmap(bm);
            } catch (Throwable ex) {
            }
            return iv;
        }
    }

---

视图不是空的，图像在那里，我可以看到框架或单击它，但图片只是变成黑色

    public View getView(int position, View convertView, ViewGroup parent) 
    {
      if (convertView == null) { 
          ImageView i = new ImageView(mContext);
       }
      else { 
          ImageView i = (ImageView) convertView;
       }

      i.setScaleType(ImageView.ScaleType.FIT_XY);
      i.setLayoutParams(new Gallery.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT));

      Bitmap bm = BitmapFactory.decodeFile(lis.
                            get(position).toString());
      i.setImageBitmap(bm);
      return i;
    }     

private List<String> getImage() throws IOException {
        AssetManager assetManager = getAssets();
        String[] files = assetManager.list("image");
        List<String> list = new ArrayList<String>();
        for (String it : files) {
            list.add("image" + File.separator + it);
        }
        return list;

    }





public class ImageAdapter extends BaseAdapter {
        private Context mContext;
        private List<String> list;

        public ImageAdapter(Context c, List<String> list) {
            mContext = c;
            this.list = list;
        }

        @Override
        public int getCount() {
            return list.size();
        }

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

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

        @Override
        public View getView(int position, View convertView, ViewGroup parent) {
            ImageView iv = null;
            try {

                if (convertView == null) {
                    convertView = new ImageView(mContext);
                    ((ImageView) convertView).setAdjustViewBounds(true);
                    convertView.setLayoutParams(new Gallery.LayoutParams(
                            LayoutParams.WRAP_CONTENT,
                            LayoutParams.WRAP_CONTENT));
                    convertView.setBackgroundResource(R.drawable.picture_frame);
                }
                iv = (ImageView) convertView;

                InputStream is = getAssets().open(list.get(position));

                Bitmap bm = BitmapFactory.decodeStream(is);

                iv.setImageBitmap(bm);
            } catch (Throwable ex) {
            }
            return iv;
        }
    }

private Gallery galery;

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

        galery = (Gallery) findViewById(R.id.gallery);
        try {
            galery.setAdapter(new ImageAdapter(this, getImage()));
        } catch (IOException e) {
            e.printStackTrace();
        }
    }