从Android可绘制资源名称中检索Java字符串

Question

I have an array of drawable png files like this :

int[] images = {R.drawable.alabama, R.drawable.alaska, R.drawable.arizona};

currentImage++;
currentImage = currentImage % images.length;
hImageViewPic.setImageResource(images[currentImage]);

How can I get something like this:

String imageName = "alabama"

I tried this, but it returns my Image View id instead of the src name.

String imageName = getResources().getResourceEntryName(R.id.idImageViewPic);

UPDATE This is more of my code to get things in context. I have adapted an answer below, but i get an error: incompatible types: String cannot be converted to int.

public class GameFragment extends Fragment {

    private AlertDialog mDialog;
    private ImageView hImageViewPic;
    private Button iButton, gButton;

    private int currentImage = 0;
    int[] images = {R.drawable.alabama, R.drawable.alaska, R.drawable.arizona};

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        View rootView = inflater.inflate(R.layout.fragment_game, container, false);
        hImageViewPic = (ImageView) rootView.findViewById(R.id.idImageViewPic);
        iButton = (Button) rootView.findViewById(R.id.guess_button);

        final EditText responseField = (EditText) rootView.findViewById(R.id.ResponseText);



        // Handle buttons here...
        View guessButton = rootView.findViewById(R.id.guess_button);
        guessButton.setOnClickListener(new View.OnClickListener() {
            int score = 0;

            @Override
            public void onClick(View view) {
                AlertDialog.Builder builder =
                        new AlertDialog.Builder(getActivity());
                String response = responseField.getText().toString();
                String wrongTextAnnouncement = getString(R.string.wrong_text, response);

                int resourceId = images[currentImage];
                String name = getResources().getResourceEntryName(resourceId);
                hImageViewPic.setImageResource(resourceId);
                hImageViewPic.setTag(name);
                String imageName = hImageViewPic.getTag(name);

                Log.d("UT3", response);
                Log.d("UT3", wrongTextAnnouncement);
                Log.d("UT3", imageName);
                if (imageName != response) {
                    builder.setTitle(R.string.wrong_title);
                    builder.setMessage(wrongTextAnnouncement);
                    builder.setCancelable(false);
                    builder.setPositiveButton(R.string.ok_label,
                            new DialogInterface.OnClickListener() {
                                @Override
                                public void onClick(DialogInterface dialogInterface,
                                                    int i) {
                                    // nothing
                                }
                            });
                    mDialog = builder.show();
                } else {
                    builder.setTitle(R.string.right_title);
                    builder.setMessage(R.string.right_text);
                    builder.setCancelable(false);
                    builder.setPositiveButton(R.string.ok_label,
                            new DialogInterface.OnClickListener() {
                                @Override
                                public void onClick(DialogInterface dialogInterface,
                                                    int i) {
                                    // nothing
                                }
                            });
                    score += 10;
                    String scoreString = String.valueOf(score);
                    Log.d("UT3", scoreString);
                }
                mDialog = builder.show();
                currentImage++;
                currentImage = currentImage % images.length;
                hImageViewPic.setImageResource(images[currentImage]);
            }
        });
        return rootView;
    }

Answer 1

You are receiving id of View because you are passing id of View to

getResourceEntryName(int resid)

If you want to get String imageName = "alabama" pass to method id of drawable, not ImageView

But there is no way to check what resource id was set to image view because under the hood Drawable was created from passed id.

Fortunately you can use hImageViewPic.setTag(Object object) to read it later.

So the code may look like:

int[] images = {R.drawable.alabama, R.drawable.alaska, R.drawable.arizona};

currentImage++;
currentImage = currentImage % images.length;
int resourceId = images[currentImage];
String name = getResources().getResourceEntryName(resourceId);
hImageViewPic.setImageResource(resourceId);
hImageViewPic.setTag(name);

Later you can get the name of image by using: hImageViewPic.getTag()

Answer 2

In my opnion this is better you use array of string images name like:

String[] imagesTitle = {alabama, alaska,arizona};

then get id of images like:

String imageName = imagesTitle[currentImage];
int drawableResourceId = this.getResources().getIdentifier(imageName,"drawable", this.getPackageName())

Where "this" is an Activity, written just to clarify. then you can set tag for image and set id for your imageview like:

hImageViewPic.setImageResource(drawableResourceId);
hImageViewPic.setTag(imageName);

I hope this can help!