Android ClickableSpan获取文本onClick()

Question

我正在ClickableSpan使用TextView,我正在尝试获取单击的跨度文本.这是我的代码.

// this is the text we'll be operating on
SpannableString text = new SpannableString("Lorem ipsum dolor sit amet");

// make "dolor" (characters 12 to 17) display a toast message when touched
ClickableSpan clickableSpan = new ClickableSpan() {
    @Override
    public void onClick(View view) {
        // This will get "Lorem ipsum dolor sit amet", but I just want "dolor"
        String text = ((TextView) view).getText().toString(); 
        Toast.makeText(context, text, Toast.LENGTH_LONG).show();
    }
};

text.setSpan(clickableSpan, 12, 17, 0);

正如你所看到的,我设置clickablespan了的TextView字符12到17,我想在拿到这些字符onClick事件.

无论如何我能做到吗？或者至少我可以将12, 17参数传递给onClick事件吗？

谢谢!

Answer 1

试试这个:

public class LoremIpsumSpan extends ClickableSpan {
    @Override
    public void onClick(View widget) {
        // TODO add check if widget instanceof TextView
        TextView tv = (TextView) widget;
        // TODO add check if tv.getText() instanceof Spanned
        Spanned s = (Spanned) tv.getText();
        int start = s.getSpanStart(this);
        int end = s.getSpanEnd(this);
        Log.d(TAG, "onClick [" + s.subSequence(start, end) + "]");
    }
}

Answer 2

稍微简单一点,如果需要也可以传递模型参考.

public class SpecialClickableSpan extends ClickableSpan {

    String text;

    public SpecialClickableSpan(String text){
         super();
         this.text = text;
    }

    @Override
    public void onClick(View widget) {
         Log.d(TAG, "onClick [" + text + "]");
    }
}

然后调用新的SpecialClickableSpan("我的文本")