Question

确定。这些是我的问题。

我需要使用正则表达式来输出除字母之外的所有内容，然后我需要将找到的单词包含在$ word标签中。使用此str = str.replaceAll（pattern，“$ 0”）;. 现在我正在过滤所有正确的元素（标点符号，数字等），但它包含了一个标签中每个单词中的每个字母而不是单词。那么如何使用正则表达式将字母分组为单词？

from“（标签打开）t（关闭）（标签打开）h（关闭）（标签打开）i（关闭）（标签打开）s（关闭）（标签打开） i（关闭）（标签打开）s（关闭）（标签打开）w（关闭）（标签打开）r（关闭）（标签打开）o（关闭）（标签打开） n（关闭）（标签打开）g（关闭）“;

到：

“（标签打开）此（关闭）（标签打开）是（关闭）（标签打开）右（关闭）”;

然后我让它们可点击，我需要抓住点击事件并在点击的单词上获得屏幕上的位置，因为我想使用点击的事件使工具提示显示在点击的单词下方。谢谢你的帮助。

公共类MainActivity扩展了Activity {

public String text = "This is just a sentence to test you. 23 this is another number23!g?";
public TextView tv;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    setContentView(R.layout.activity_main);

    text = explode(text);

    tv = (TextView) findViewById(R.id.tv1);

    tv.setLinksClickable(true);
    tv.setMovementMethod(LinkMovementMethod.getInstance());

    Spanned article = Html.fromHtml(text, null, null);
    setHTML(article);
}


public void setHTML(Spanned html) {
      SpannableString message = new SpannableString(html.toString());
      Object[] spans = html.getSpans(0, html.length(), Object.class);
      for (Object span : spans) {
         int start = html.getSpanStart(span);
         int end = html.getSpanEnd(span);
         int flags = html.getSpanFlags(span);
         if (span instanceof URLSpan) {
            URLSpan urlSpan = (URLSpan) span;
            span = new CallbackSpan(urlSpan.getURL());
         }
         message.setSpan(span, start, end, flags);
      }
      tv.setText(message);
   }
    public String explode(String str){  
      String pattern = "([a-zA-Z])";
      str = str.replaceAll(pattern, "<a href=\"$0\">$0</a>");
      return str;
    }

   private final class CallbackSpan extends ClickableSpan {

      private String m_data;
      private String url_main;

      public CallbackSpan(String url) {
         m_data = url.substring(0);
         url_main = url;

      }

      public void onClick(View view) {

          TextView item = (TextView)findViewById(R.id.tv2);
          item.setText(url_main + " was clicked.");
          Log.d("item", url_main);
      }
   }

}

Answer 1

最新代码，请参阅link form github

message.setSpan(span, start, end, flags);

在设置新范围之前，您需要删除原始范围。请看下面
The onClick() of ClickableSpan is not working for URLSpan?

EDIT
您可以extends LinkMovementMethod

捕获任意跨度点击事件

    import android.os.Handler;
import android.os.Message;
import android.text.Layout;
import android.text.Selection;
import android.text.Spannable;
import android.text.method.LinkMovementMethod;
import android.text.method.MovementMethod;
import android.view.KeyEvent;
import android.view.MotionEvent;
import android.widget.TextView;

import java.lang.ref.WeakReference;

public class LinkMovementMethodExt extends LinkMovementMethod {
    public static final int LinkMovementMethod_Down = 1001;
    public static final int LinkMovementMethod_Up = 2002;
    private static LinkMovementMethod sInstance;
    private Class mSpanClass = null;
    private WeakReference<Handler> mWeakReference = null;

    public static MovementMethod getInstance(Handler handler, Class spanClass) {
        if (sInstance == null) {
            sInstance = new LinkMovementMethodExt();
            ((LinkMovementMethodExt) sInstance).mWeakReference = new WeakReference<>(handler);
            ((LinkMovementMethodExt) sInstance).mSpanClass = spanClass;
        }
        return sInstance;
    }

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

        if (action == MotionEvent.ACTION_UP ||
                action == MotionEvent.ACTION_DOWN) {
            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);
            /**
             * get you interest span
             */
            Object[] spans = buffer.getSpans(off, off, mSpanClass);
            if (spans.length != 0) {
                if (action == MotionEvent.ACTION_DOWN) {
                    Selection.setSelection(buffer, buffer.getSpanStart(spans[0]), buffer.getSpanEnd(spans[0]));
                    MessageSpan obj = new MessageSpan();
                    obj.setObj(spans);
                    obj.setView(widget);
                    Handler handler = mWeakReference.get();
                    if (handler != null) {
                        Message message = handler.obtainMessage();
                        message.obj = obj;
                        message.what = LinkMovementMethod_Down;
                        message.sendToTarget();
                        return true;
                    }
                    return false;
                } else if (action == MotionEvent.ACTION_UP) {
                    Handler handler = mWeakReference.get();
                    if (handler != null) {
                        MessageSpan obj = new MessageSpan();
                        obj.setView(widget);
                        Message message = handler.obtainMessage();
                        message.obj = obj;
                        message.what = LinkMovementMethod_Up;
                        message.sendToTarget();
                        return true;
                    }
                    return false;
                }
            }
        }

        return super.onTouchEvent(widget, buffer, event);
    }

    public boolean canSelectArbitrarily() {
        return true;
    }

    public boolean onKeyUp(TextView widget, Spannable buffer, int keyCode,
                           KeyEvent event) {
        return false;
    }

<强> textView.setMovementMethod（LinkMovementMethodExt.getInstance（））;

编辑“android developer”
为 LinkMovementMethodExt 类添加处理程序属性是更好的方法。
您可以捕获作为Message对象传递的所有Spanned。

onTouchEvent方法中的剪辑代码：

Message message = Handler.obtainMessage();
message.obj = buffer.getSpans(off, off, Spanned.class);//get all spanned
message.what = 111;//which value ,it is up to you
message.sendToTarget(); //send message to you target handler

您可以在处理程序类中处理预期的跨区域。可能是灵活的处理方式希望能帮到你。

enter image description here

textview文本上方是<a href='/a'>aaaa</a>123456<a href='/b'>bbbb</b>7890
我理解你的要求：
点击'aaaa'，你想得到它s href value '/a', click 'bbbb',get it s href'/ b';不要触发在Web浏览器中打开的默认操作。
如果我理解是对的，你可以这样做：

为textview等设置LinkMovementMethod：textview.setMovementMethod(LinkMovementMethodExt.getInstance(handler, URLSpan.class));
获得兴趣范围，这里是URLSpan 在处理程序 handleMessage 方法中，您可以这样做：

private Handler handler = new Handler() {
      public void handleMessage(Message msg) {
          int what = msg.what;
          if (what == 100) {
              Object[] spans = (Object[])msg.obj;
              for (Object span : spans) {
                  if (span instanceof URLSpan) {
                      System.out.println(((URLSpan) span).getURL());
                  }
              }
          }
      };
  };

Download demo code

MainActivity 具有颜色属性，您可以根据需要指定哪个颜色值。

怎么办？

Step1，获取当前点击范围。
Step2，将BackgroundColorSpan设置为当前点击范围

Answer 2

假设您想要在textview上单击单个单词？我不明白你的评论中所有字母转换为单词。

以下内容可用于点击单个作品，并以祝酒词显示。

    public class MainActivity extends Activity {

    TextView _tv;
    String[] each;
    SpannableString ss1;
    Button b;
    EditText et;
    String s;
    @Override
    public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    b= (Button) findViewById(R.id.button1);
    et = (EditText) findViewById(R.id.ed);
    _tv = (TextView) findViewById( R.id.tv );
    b.setOnClickListener(new OnClickListener()
    {

    @Override
    public void onClick(View v) {
        // TODO Auto-generated method stub
        s=et.getText().toString();
        _tv.setText("");
        for(int i=0;i<s.length();i++)
        {
            each = s.split("\\s+");
        }
        for(int i=0;i<each.length;i++)
        {
            System.out.println("................"+each[i]);
            ss1=  new SpannableString(each[i]);
            //StyleSpan boldSpan = new StyleSpan( Typeface.BOLD );
            //spannable.setSpan( boldSpan, 41, 52, Spannable.SPAN_INCLUSIVE_INCLUSIVE );
            ss1.setSpan(new MyClickableSpan(each[i]), 0, ss1.length(), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
            _tv.append(ss1); 
            _tv.append(" "); 

        }
        _tv.setMovementMethod(LinkMovementMethod.getInstance());
    }
       });
      }
      class MyClickableSpan extends ClickableSpan{ 
      String clicked;
          public MyClickableSpan(String string) {
    // TODO Auto-generated constructor stub
       clicked =string;
      }
      //clickable span
      public void onClick(View textView) {
      //do something


      Toast.makeText(MainActivity.this,clicked ,
        Toast.LENGTH_SHORT).show();
     }
     @Override
     public void updateDrawState(TextPaint ds) {
     ds.setColor(Color.BLACK);//set text color 
     ds.setUnderlineText(false); // set to false to remove underline
     }
    }
    }

android span点击事件

2 个答案: