带图像的 TextView（不是来自，可绘制）

Question

我在路线上的照片：

Android\data\com.gmb.myapp\photo

在自定义TextView里面，添加照片。

如下图：

在下面的代码示例中，从drawable文件夹中，接收到照片。（照片，获取路径如下！Android\data\com.gmb。 myapp\photo 不是来自，可绘制)

在文字里面，图片是这样的：

按 [img src=myphoto/] 接受

public class TextViewWithImages extends androidx.appcompat.widget.AppCompatTextView {

    public TextViewWithImages(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
    }
    public TextViewWithImages(Context context, AttributeSet attrs) {
        super(context, attrs);
    }
    public TextViewWithImages(Context context) {
        super(context);
    }

    @Override
    public void setText(CharSequence text, BufferType type) {
        Spannable s = getTextWithImages(getContext(), text);
        super.setText(s, BufferType.SPANNABLE);
    }

    private static final Spannable.Factory spannableFactory = Spannable.Factory.getInstance();

    private static boolean addImages(Context context, Spannable spannable) {
        Pattern refImg = Pattern.compile("\Q[img src=\E([a-zA-Z0-9_]+?)\Q/]\E");
        boolean hasChanges = false;

        Matcher matcher = refImg.matcher(spannable);
        while (matcher.find()) {
            boolean set = true;
            for (ImageSpan span : spannable.getSpans(matcher.start(), matcher.end(), ImageSpan.class)) {
                if (spannable.getSpanStart(span) >= matcher.start()
                        && spannable.getSpanEnd(span) <= matcher.end()
                ) {
                    spannable.removeSpan(span);
                } else {
                    set = false;
                    break;
                }
            }
            String resname = spannable.subSequence(matcher.start(1), matcher.end(1)).toString().trim();
            int id = context.getResources().getIdentifier(resname, "drawable", context.getPackageName());
            if (set) {
                hasChanges = true;
                spannable.setSpan(new ImageSpan(context,id),
                        matcher.start(),
                        matcher.end(),
                        Spannable.SPAN_EXCLUSIVE_EXCLUSIVE

                );
            }
        }

        return hasChanges;
    }
    private static Spannable getTextWithImages(Context context, CharSequence text) {
        Spannable spannable = spannableFactory.newSpannable(text);
        addImages(context, spannable);
        return spannable;
    }

}

更新：

在 id 中定义了可绘制文件夹的路径。

spannable.setSpan(新ImageSpan(上下文,id)

我要定义以下路径：

Android\data\com.gmb.myapp\photo

Answer 1

问题已解决。使用 Uri.

带有 PNG 扩展名的照片应位于以下路径中。 Android\data\com.codinginflow.myawesomequiz\Directory_name

Class 代码：

public class TextViewWithImages extends androidx.appcompat.widget.AppCompatTextView {

    public TextViewWithImages(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
    }
    public TextViewWithImages(Context context, AttributeSet attrs) {
        super(context, attrs);
    }
    public TextViewWithImages(Context context) {
        super(context);
    }

    @Override
    public void setText(CharSequence text, BufferType type) {
        Spannable s = getTextWithImages(getContext(), text);
        super.setText(s, BufferType.SPANNABLE);
    }

    private static final Spannable.Factory spannableFactory = Spannable.Factory.getInstance();

    private static boolean addImages(Context context, Spannable spannable) {
        Pattern refImg = Pattern.compile("\Q[img src=\E([a-zA-Z0-9_]+?)\Q/]\E");
        boolean hasChanges = false;

        Matcher matcher = refImg.matcher(spannable);
        while (matcher.find()) {
            boolean set = true;
            for (ImageSpan span : spannable.getSpans(matcher.start(), matcher.end(), ImageSpan.class)) {
                if (spannable.getSpanStart(span) >= matcher.start()
                        && spannable.getSpanEnd(span) <= matcher.end()
                ) {
                    spannable.removeSpan(span);
                } else {
                    set = false;
                    break;
                }
            }
            String resname = spannable.subSequence(matcher.start(1), matcher.end(1)).toString().trim();
            //int id = context.getResources().getIdentifier(resname, "drawable", context.getPackageName());

            File folder = Environment.getExternalStoragePublicDirectory("/Android/data/"+context.getApplicationContext().getPackageName()+"/"+"Directory_name"+"/");
            String fileName = folder.getPath();
            Uri uri = Uri.fromFile(new File(fileName+"/"+resname+".png"));

            if (set) {
                hasChanges = true;
                spannable.setSpan(new ImageSpan(context,uri),
                        matcher.start(),
                        matcher.end(),
                        Spannable.SPAN_EXCLUSIVE_EXCLUSIVE

                );
            }
        }

        return hasChanges;
    }
    private static Spannable getTextWithImages(Context context, CharSequence text) {
        Spannable spannable = spannableFactory.newSpannable(text);
        addImages(context, spannable);
        return spannable;
    }

}

带图像的 TextView（不是来自，可绘制）

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