Imageswitcher URI

Question

如何设置URI格式的imageswitcher？

我知道如何将其设置为URL而不是URI 我只是想知道如何将图像设置为实际应用程序中可用的资源？

这是我的代码：

 private ImageSwitcher mAnswerImage;

// Set up Image Switcher
    mAnswerImage = (ImageSwitcher) findViewById(R.id.ImageSwitcher_AnswerImage);
    mAnswerImage.setFactory(new MyImageSwitcherFactory());

 // Set the image of the imageswitcher
        Drawable image = getQuestionImageDrawable(startingQuestionNumber);
        mQuestionImage.setImageDrawable(image);

// Update question image
         ImageSwitcher questionImageSwitcher = (ImageSwitcher)   findViewById(R.id.ImageSwitcher_QuestionImage);
        Drawable image = getQuestionImageDrawable(nextQuestionNumber);
        questionImageSwitcher.setImageDrawable(image);

/**
 * Returns a {@code String} representing the URL to an image for a particular question
 * 
 * @param questionNumber
 *            The question to get the URL for
 * @return A {@code String} for the URL or null if none found
 */

 private String getQuestionImageUrl(Integer questionNumber) {
    String url = null;
    Question curQuestion = (Question) mQuestions.get(questionNumber);
    if (curQuestion != null) {
        url = curQuestion.mImageUrl;
    }
    return url;
}

/**
 * Retrieves a {@code Drawable} object for a particular question
 * 
 * @param questionNumber
 *            The question number to get the {@code Drawable} for
 * @return A {@code Drawable} for the particular question, or a placeholder image if the loading failed or the question doesn't exist
 */
private Drawable getQuestionImageDrawable(int questionNumber) {
    Drawable image;
    URL imageUrl;

    try {
        // Create a Drawable by decoding a stream from a remote URL
        imageUrl = new URL(getQuestionImageUrl(questionNumber));
        InputStream stream = imageUrl.openStream();
        Bitmap bitmap = BitmapFactory.decodeStream(stream);
        image = new BitmapDrawable(getResources(), bitmap);
    } catch (Exception e) {
        Log.e(DEBUG_TAG, "Decoding Bitmap stream failed");
        image = getResources().getDrawable(R.drawable.noquestion);
    }
    return image;
}

    /**
     * A switcher factory for use with the question image. Creates the next
     * {@code ImageView} object to animate to
     * 
     */
    private class MyImageSwitcherFactory implements ViewSwitcher.ViewFactory {
        public View makeView() {
            ImageView imageView = (ImageView) LayoutInflater.from(
                    getApplicationContext()).inflate(
                    R.layout.image_switcher_view, mQuestionImage, false);
            return imageView;
        }
    }
    /**
 * Object to manage the data for a single quiz question
 * 
 */
private class Question {
    @SuppressWarnings("unused")
    int mNumber;
    String mText;
    String mImageUrl;

    /**
     * 
     * Constructs a new question object
     * 
     * @param questionNum
     *            The number of this question
     * @param questionText
     *            The text for this question
     * @param questionImageUrl
     *            A valid image Url to display with this question
     */
    public Question(int questionNum, String questionText, String questionImageUrl) {
        mNumber = questionNum;
        mText = questionText;
        mImageUrl = questionImageUrl;
    }
}