Android TextView 超链接显示及跳转

首先看下效果图

点击“详情页”进入到我们的App的另一个页面，这是如何实现的呢？先看下代码

textView = findViewById(R.id.text);
SpannableString ss = new SpannableString("具体内容请点击详情页");
ss.setSpan(new CustomURLSpan(""), 7, 10,
         Spanned.SPAN_INCLUSIVE_INCLUSIVE);
textView.setText(ss);
textView.setMovementMethod(new CustomMovementMethod(ActionBarActivity.this));//**链接

CustomURLSpan 表示的你自定义字体的样式（有无下划线？字体粗细，颜色等等）

CustomMovementMethod 表示你点击之后的处理操作（点击之后打开网页？跳转到某个App详情页？）

public class CustomURLSpan extends URLSpan {
    public CustomURLSpan(String url) {
        super(url);
    }

    @Override
    public void updateDrawState(TextPaint ds) {
        super.updateDrawState(ds);
        ds.setUnderlineText(false);//无下划线
        ds.setColor(Color.parseColor("#ff0000"));//字体颜色
    }
}

public class CustomMovementMethod extends LinkMovementMethod {
    Context mContext;

    public CustomMovementMethod(Context context) {
        this.mContext = context;
    }

    @Override
    public boolean onTouchEvent(TextView widget, Spannable buffer,
                                MotionEvent event) {
        int action = event.getAction();

        if (action == MotionEvent.ACTION_UP) {

            //长按之后松手是不会跳转到目标页面的，只有短暂点击才会
            if (event.getEventTime() - event.getDownTime() > ViewConfiguration
                    .getLongPressTimeout() - 10) {
                return true;
            }

            int x = (int) event.getX();
            int y = (int) event.getY();

            x -= widget.getTotalPaddingLeft();
            y -= widget.getTotalPaddingTop();

            x += widget.getScrollX();
            y += widget.getScrollY();

            Layout layout = widget.getLayout();
            int line = layout.getLineForVertical(y);
            int off = layout.getOffsetForHorizontal(line, x);

            URLSpan[] link = buffer.getSpans(off, off, URLSpan.class);
            if (link.length != 0) {
                String url = link[0].getURL();
                  //点击跳转的逻辑在这里
                Intent intent = new Intent(mContext, MainActivity.class);
                mContext.startActivity(intent);
                return true;
            }
        }
        return super.onTouchEvent(widget, buffer, event);
    }
}

注意下这句话

ss.setSpan(new CustomURLSpan(""), 7, 10,
         Spanned.SPAN_INCLUSIVE_INCLUSIVE);

start 7 end 10 意思是第8个字符（索引为7）到第10个字符