Android:将 onClickListener 设置为 TextView 中的部分文本 - 问题

Posted

技术标签:

【中文标题】Android:将 onClickListener 设置为 TextView 中的部分文本 - 问题【英文标题】:Android: Setting onClickListener to a Part of text in a TextView - Issue 【发布时间】:2015-12-31 05:06:24 【问题描述】:

我正在尝试识别我的 TextView 中的主题标签并使其可点击,以便当用户单击该主题标签时我可以将他们带到另一个视图。

我设法使用模式匹配在 TextView 中识别 Hashtags,它们在运行时显示为彩色。但是,我需要使 Hashtag 可点击。

这是我的代码:

 SpannableString hashText = new SpannableString("I just watched #StarWars and it was incredible. It's a #MustWatch #StarWars");
 Matcher matcher = Pattern.compile("#([A-Za-z0-9_-]+)").matcher(hashText);

 while (matcher.find())
 
          hashText.setSpan(new ForegroundColorSpan(Color.parseColor("#000763")), matcher.start(), matcher.end(), 0);
          String tag = matcher.group(0);
 

 holder.caption.setText(hashText);

 //I need to set an OnClick listener to all the Hashtags recognised

使用上述相同的解决方案,如何将 onclick 侦听器添加到每个主题标签?

【问题讨论】:

有图书馆可以做同样的事情,看看这个:github.com/Danylo2006/HashTagHelper @SachinRao 看起来该库不适用于最低 sdk 9 :( 尝试将 2 个 java 文件粘贴到您的任何包中。 (HashTagHelper 和 ClickableForegroundColorSpan) 【参考方案1】:

有一种方法......在看到你的问题后,我只是在谷歌搜索......我发现了这个,我希望它会工作......

1。 你可以使用android.text.style.ClickableSpanlink

SpannableString ss = new SpannableString("Hello World");
    ClickableSpan span1 = new ClickableSpan() 
        @Override
        public void onClick(View textView) 
            // do some thing
        
    ;

    ClickableSpan span2 = new ClickableSpan() 
        @Override
        public void onClick(View textView) 
            // do another thing
        
    ;

    ss.setSpan(span1, 0, 4, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
    ss.setSpan(span2, 6, 10, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);

    textView.setText(ss);
    textView.setMovementMethod(LinkMovementMethod.getInstance());

另一种方式..link

 TextView myTextView = new TextView(this);
    String myString = "Some text [clickable]";
    int i1 = myString.indexOf("[");
    int i2 = myString.indexOf("]");
    myTextView.setMovementMethod(LinkMovementMethod.getInstance());
    myTextView.setText(myString, BufferType.SPANNABLE);
    Spannable mySpannable = (Spannable)myTextView.getText();
    ClickableSpan myClickableSpan = new ClickableSpan()
    
     @Override
     public void onClick(View widget)  /* do something */ 
    ;
    mySpannable.setSpan(myClickableSpan, i1, i2 + 1, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);

刚刚从那些链接复制的答案...

【讨论】:

【参考方案2】:

是的,你可以做到,你需要使用ClickableSpanSpannableString

将此代码粘贴到您的 while 循环中

final String tag = matcher.group(0);
ClickableSpan clickableSpan = new ClickableSpan() 
                @Override
                public void onClick(View textView) 
                    Log.e("click","click " + tag);
                
                @Override
                public void updateDrawState(TextPaint ds) 
                    super.updateDrawState(ds);

                
            ;
            hashText.setSpan(clickableSpan, matcher.start(), matcher.end(), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);

别忘了在你的TextView上设置setMovementMethod()

holder.caption.setMovementMethod(LinkMovementMethod.getInstance());

【讨论】:

【参考方案3】:

您可以使用此代码通过 textview 中的可点击任意键(@,#)文本更改颜色。我使用此格式。它在我身边很好用。

private void setTags(TextView pTextView, String pTagString) 
    SpannableString string = new SpannableString(pTagString);

    int start = -1;

    for (int i = 0; i < pTagString.length(); i++) 
        if (pTagString.charAt(i) == '@' || pTagString.charAt(i) == '#')                
            start = i;

         else if (pTagString.charAt(i) == ' '
                || (i == pTagString.length() - 1 && start != -1)) 
            if (start != -1) 
                if (i == pTagString.length() - 1) 
                    i++; // case for if hash is last word and there is no
                            // space after word
                

                final String tag = pTagString.substring(start, i);              
                string.setSpan(new ClickableSpan() 

                    @Override
                    public void onClick(View widget) 

                        Toast.makeText(mContext, "" + tag, 3000)
                                .show();
                    
                    @Override
                    public void updateDrawState(TextPaint ds) 

                        if (tag.contains("@"))
                            ds.setColor(Color.parseColor("#0474be"));
                        else
                            ds.setColor(Color.parseColor("#ed6057"));

                        ds.setUnderlineText(false);
                    
                , start, i, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
                start = -1;
            
        
    

    pTextView.setMovementMethod(LinkMovementMethod.getInstance());
    pTextView.setText(string);

请尝试这种方式希望可以解决您的问题。

【讨论】:

【参考方案4】:

//得到但没有模式匹配

    SpannableString hashText = new SpannableString("I just watched #StarWars and it was incredible. It's a #MustWatch #StarWars");



    ClickableSpan clickableSpanstar1stWarsHashText = new ClickableSpan() 
        @Override
        public void onClick(View widget) 
            //Intent starWars = new Intent(MainActivity.this,starWars.class); //starWars is a class file which extends Activity
            //startActivity(starWars);
            Toast.makeText(MainActivity.this,"Clicked On 1st #StarWars Remove comments of above line",Toast.LENGTH_LONG).show();
        
    ;

    ClickableSpan clickableSpanmustWatchHashText = new ClickableSpan() 
        @Override
        public void onClick(View widget) 
            //Intent mustWatch = new Intent(MainActivity.this,mustWatch.class); //starWars is a class file which extends Activity
            //startActivity(mustWatch);
            Toast.makeText(MainActivity.this,"Clicked On #MustWatch Remove comments of above line",Toast.LENGTH_LONG).show();
        
    ;

    ClickableSpan clickableSpanstar2ndWarsHashText = new ClickableSpan() 
        @Override
        public void onClick(View widget) 
            //Intent starWars = new Intent(MainActivity.this,starWars.class); //starWars is a class file which extends Activity
            //startActivity(starWars);
            Toast.makeText(MainActivity.this,"Clicked On 2nd #StarWars Remove comments of above line",Toast.LENGTH_LONG).show();
        
    ;

    hashText.setSpan(clickableSpanstar1stWarsHashText,15,24, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
    hashText.setSpan(clickableSpanmustWatchHashText, 55, 65, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
    hashText.setSpan(clickableSpanstar2ndWarsHashText,66,75, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);




    //SpannableString hashText = new SpannableString("I just watched #StarWars and it was incredible. It's a #MustWatch #StarWars");

    TextView  textView = (TextView) findViewById(R.id.textView); //textView id i.e. android:id="@+id/textView"
    textView.setText(hashText);
    textView.setMovementMethod(LinkMovementMethod.getInstance());
    textView.setHighlightColor(Color.TRANSPARENT);

【讨论】:

【参考方案5】:

您可以为此使用android.text.style.ClickableSpan: 参考answer

【讨论】:

【参考方案6】:

您可以通过使用split 函数并在Layout 中填充textview's 来实现它,如下所示:

 layout=(LinearLayout)findViewById(R.id.layout);
 String data="I just watched #StarWars and it was incredible. It's a #MustWatch #StarWars";
TextView textView;
     String [] s=data.split(" ");
     for(int i=0;i<s.length;i++)
         if(s[i].matches("#([A-Za-z0-9_-]+)"))

              textView=new TextView(this);
              textView.setText(s[i]);
              textView.setTextColor(Color.parseColor("#000763"));
              textView.setTag(s[i]);
              textView.setOnClickListener(viewClicked(textView));
         else
             textView=new TextView(this);
              textView.setText(" "+s[i]);
         
         layout.addView(textView,i);
     

以及处理点击事件到所需Textview's的方法:

 View.OnClickListener viewClicked(final TextView textView)  
    return new View.OnClickListener() 
        public void onClick(View v) 
            Toast.makeText(getApplicationContext(), v.getTag().toString(), 1000).show();

        
    ;

【讨论】:

【参考方案7】:

我遇到了类似的问题——我不得不对点击的部分文本做某事,但字符串是在运行时创建的。也许它会对某人有所帮助 - 在这个解决方案中,我们不关心在整个文本中找到 indexStart、indexEnd(这可能非常糟糕)等:

 val action1ClickedSpan = object : ClickableSpan() 
     override fun onClick(widget: View?) 
          presenter.action1Clicked()
     
 

 val possibleActionsHint = SpannableStringBuilder().apply 
     val action1Start = this.length
     append(getString(R.string.action1))
     val action2Start = this.length

     append(...)
     append(...) 

     val action2Start = this.length
     append(getString(R.string.action1))
     val action2End = this.length

     setSpan(action1ClickedSpan, action1Start, action1End, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE)
     setSpan(...)
 

 this.possibleActionsTextView.apply 
     text = possibleActionsHint
     movementMethod = LinkMovementMethod.getInstance()
 

【讨论】:

以上是关于Android:将 onClickListener 设置为 TextView 中的部分文本 - 问题的主要内容,如果未能解决你的问题,请参考以下文章

Android:如果我将 Switch OnClickListener 放在 FragmentActivity 上,我的应用程序将无法运行

Android OnItemClickListener 和 OnClickListener [重复]

Android中View类OnClickListener和DialogInterface类OnClickListener冲突解决办法

Android OnClickListener 多个视图? [复制]

(android.view.View$OnClickListener)' 在一个空对象引用 Kotlin

Android 工具栏项 OnClickListener