Android如何使用文件将可绘制文件夹中的每个图像加载到imageItems？

How can I load image from drawable folder when I don't know image file name.

当我不知道图像文件名时,如何从可绘制文件夹加载图像。

I want to show all the drawable folder image in the gridview.

我想在gridview中显示所有可绘制的文件夹图像。

I just know how to load the Image from file name, like below:

我只知道如何从文件名加载图像,如下所示:

 // ImageItem  method :public ImageItem(Bitmap imageBitmap, String title){...}
   private ArrayList<ImageItem> getData()
     {
         final ArrayList<ImageItem> imageItems = new ArrayList<>();
         TypedArray imgs = mContext.getResources().obtainTypedArray(R.array.image_ids);

         for( int i = 0 ; i< imgs.length(); i++ )
         {
             Bitmap bitmap =      BitmapFactory.decodeResource(mContext.getResources(), imgs.getResourceId(i, -1));
             imageItems.add(new ImageItem(bitmap, "Image#" + i));
         }

         return imageItems;
     }

But now if I don't know file name(R.drawable.filename), How can I load every images from the drawable folder using file to set into the imageItems?

但是现在如果我不知道文件名(R.drawable.filename),如何使用文件将可绘制文件夹中的每个图像加载到imageItems?

Thank you very much.

非常感谢你。

1 个解决方案

#1

Field[] drawables = android.R.drawable.class.getFields();
for (Field f : drawables) {
    try {
        Log.i("LOG", "R.drawable." + f.getName());
    } catch (Exception e) {
        e.printStackTrace();
    }
}

try this