你可以使用:

ImageView imgView = new ImageView(this);
InputStream is = getClass().getResourceAsStream("/drawable/" + fileName);
imgView.setImageDrawable(Drawable.createFromStream(is, ""));

您可以使用它来访问特定的文件夹并获得特定的图像

 public void Retrieve(String path, String Name)
   {
    File imageFile = new File(path+Name);

    if(imageFile.exists()){

        Bitmap myBitmap = BitmapFactory.decodeFile(path+Name);
        myImage = (ImageView) findViewById(R.id.savedImage);
        myImage.setImageBitmap(myBitmap);
        Toast.makeText(SaveImage.this, myBitmap.toString(), Toast.LENGTH_LONG).show();

    }
}

然后你就可以过来了

Retrieve(Environment.getExternalStorageDirectory().toString()+"/Aqeel/Images/","Image2.PNG");
Toast.makeText(SaveImage.this, "Saved", Toast.LENGTH_LONG).show();

所有的答案都过时了。毕加索的作品最好是用于这种目的。它有很多功能，包括背景图像处理。

我有没有提过它非常容易使用:

Picasso.with(context).load(new File(...)).into(imageView);

你还可以使用:

    File imgFile = new  File(“filepath”);
    if(imgFile.exists())
    {
        ImageView myImage = new ImageView(this);
        myImage.setImageURI(Uri.fromFile(imgFile));

    }

这为您隐式地完成位图解码。

onLoadImage满载

private void onLoadImage(final String imagePath) {
    ImageSize targetSize = new ImageSize(imageView.getWidth(), imageView.getHeight()); // result Bitmap will be fit to this size

    //ImageLoader imageLoader = ImageLoader.getInstance(); // Get singleto
    com.nostra13.universalimageloader.core.ImageLoader imageLoader = com.nostra13.universalimageloader.core.ImageLoader.getInstance();
    imageLoader.init(ImageLoaderConfiguration.createDefault(getContext()));

    imageLoader.loadImage(imagePath, targetSize, new SimpleImageLoadingListener() {
        @Override
        public void onLoadingStarted(final String imageUri, View view) {
            super.onLoadingStarted(imageUri, view);

            progress2.setVisibility(View.VISIBLE);

            new Handler().post(new Runnable() {
                public void run() {
                    progress2.setColorSchemeResources(android.R.color.holo_green_light, android.R.color.holo_orange_light, android.R.color.holo_red_light);

                    // Picasso.with(getContext()).load(imagePath).into(imageView);
                    // Picasso.with(getContext()).load(imagePath) .memoryPolicy(MemoryPolicy.NO_CACHE, MemoryPolicy.NO_STORE).into(imageView);

                    Glide.with(getContext())
                            .load(imagePath)
                            .asBitmap()
                            .into(imageView);
                }
          });
        }

        @Override
        public void onLoadingComplete(String imageUri, View view, Bitmap loadedImage) {
            if (view == null) {
                progress2.setVisibility(View.INVISIBLE);
            }
            // else { 
              Log.e("onLoadImage", "onLoadingComplete");
            //   progress2.setVisibility(View.INVISIBLE);
            // }
            // setLoagingCompileImage();
        }

        @Override
        public void onLoadingFailed(String imageUri, View view, FailReason failReason) {
            super.onLoadingFailed(imageUri, view, failReason);
            if (view == null) {
                progress2.setVisibility(View.INVISIBLE);
            }
            Log.e("onLoadingFailed", imageUri);
            Log.e("onLoadingFailed", failReason.toString());
        }

        @Override
        public void onLoadingCancelled(String imageUri, View view) {
            super.onLoadingCancelled(imageUri, view);
            if (view == null) {
                progress2.setVisibility(View.INVISIBLE);
            }
            Log.e("onLoadImage", "onLoadingCancelled");
        }
    });
}

Labeeb是对的，为什么你需要设置图像使用路径，如果你的资源已经放在资源文件夹，

只有当图像存储在SD-Card中时，才需要这种路径。

尝试下面的代码来设置存储在sd卡中的文件中的位图图像。

File imgFile = new  File("/sdcard/Images/test_image.jpg");

if(imgFile.exists()){

    Bitmap myBitmap = BitmapFactory.decodeFile(imgFile.getAbsolutePath());

    ImageView myImage = (ImageView) findViewById(R.id.imageviewTest);

    myImage.setImageBitmap(myBitmap);

}

并将此权限包含在manifest文件中:

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />