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我为片段选项卡设置了以下代码。我正在尝试从文件中获取图像及其名称并添加到单独的数组列表中。我成功获取图像但未能获得相应的名称。每次光标为空。我能做些什么 ？

 public void imageList()
    {
        File imagePathForImage = new File(Environment.getExternalStorageDirectory());
        imageList = imageReader(imagePathForImage);

        if(imageList.size() != 0)
        {
            gallery.setAdapter(new imageAdapater());
            gallery.setOnItemClickListener(new AdapterView.OnItemClickListener() {
                @Override
                public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
                    Intent openImage = new Intent(getActivity(), FullImageActivity.class);
                    openImage.putExtra("Img :", imageList.get(i).toString());
                    startActivity(openImage);
                }
            });
        }
        else
        {
            Toast.makeText(getActivity(), "No image Found", Toast.LENGTH_SHORT).show();
        }
    }


    public void imageNameList ()
    {
        imageNameList = new ArrayList<String>();
        File imagePathForName = new File(Environment.getExternalStorageDirectory() );
        Cursor cursor = getContext().getContentResolver().query(Uri.fromFile(imagePathForName), null, null, null, null);
        if (cursor == null)
        {
            Toast.makeText(getActivity(), "No Image File Found", Toast.LENGTH_SHORT).show();
        } else
        {
            cursor.moveToFirst();
            int idx = cursor.getColumnIndex(MediaStore.Images.ImageColumns.DISPLAY_NAME);
            imageNameList.add(cursor.getString(idx));
            Log.i( "FineName: " , cursor.getString(idx) );
            cursor.close();
        }
    }

我的计划是创建在其下方显示各自名称的图像库。

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1 回答 1

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你可以从路径

String filename=path.substring(path.lastIndexOf("/")+1);
于 2020-05-03T16:05:53.167 回答