繼續閱讀的TextView像Facebook內部列表視圖

Question

我按照

Set Text View ellipsize and add view more at end

，並添加視圖和多視圖在ListView少item.But上滾動的問題開始，更多時而消失，所有的文本視圖會自動擴展。如何解決此問題，請幫助。

@Override 
public View getView(int position, View convertView, ViewGroup parent) { 
    if (inflater == null) inflater = (LayoutInflater) activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
    if (convertView == null) 
     convertView = inflater.inflate(R.layout.feed_item, null); 

    if (imageLoader == null) 
     imageLoader = AppController.getInstance().getImageLoader(); 

    TextView name = (TextView) convertView.findViewById(R.id.name); 
    TextView timestamp = (TextView) convertView.findViewById(R.id.timestamp); 
    TextView statusMsg = (TextView) convertView.findViewById(R.id.txtStatusMsg); 
    TextView url = (TextView) convertView.findViewById(R.id.txtUrl); 
    NetworkImageView profilePic = (NetworkImageView) convertView.findViewById(R.id.profilePic); 
    FeedImageView feedImageView = (FeedImageView) convertView.findViewById(R.id.feedImage1); 
    FeedItem item = feedItems.get(position); 
    name.setText(item.getName()); 
    CharSequence timeAgo = DateUtils.getRelativeTimeSpanString(Long.parseLong(item.getTimeStamp()), System.currentTimeMillis(), DateUtils.SECOND_IN_MILLIS); 
    timestamp.setText(timeAgo); 
    if (!TextUtils.isEmpty(item.getStatus())) { 
     ////This is TextView I want to expand 
     statusMsg.setText(item.getStatus()); 
     statusMsg.setVisibility(View.VISIBLE); 
     makeTextViewResizable(statusMsg, 3, "...More", true); 
    } else { 
     statusMsg.setVisibility(View.GONE); 
    } 

    if (item.getUrl() != null) { 
     url.setText(Html.fromHtml("<a href=\"" + item.getUrl() + "\">" 
       + item.getUrl() + "</a> ")); 
     url.setMovementMethod(LinkMovementMethod.getInstance()); 
     url.setVisibility(View.VISIBLE); 
    } else { 
     url.setVisibility(View.GONE); 
    } 

    // user profile pic 
    profilePic.setImageUrl(item.getProfilePic(), imageLoader); 

    // Feed image 
    if (item.getImge() != null) { 
     feedImageView.setImageUrl(item.getImge(), imageLoader); 
     feedImageView.setVisibility(View.VISIBLE); 
     feedImageView 
       .setResponseObserver(new FeedImageView.ResponseObserver() { 
        @Override 
        public void onError() { 
        } 

        @Override 
        public void onSuccess() { 
        } 
       }); 
    } else { 
     feedImageView.setVisibility(View.GONE); 
    } 

    return convertView; 
} 

public static void makeTextViewResizable(final TextView tv, final int maxLine, final String expandText, final boolean viewMore) { 
    if (tv.getTag() == null) { 
     tv.setTag(tv.getText()); 
    } 
    ViewTreeObserver vto = tv.getViewTreeObserver(); 
    vto.addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() { 

     @SuppressWarnings("deprecation") 
     @Override 
     public void onGlobalLayout() { 
      ViewTreeObserver obs = tv.getViewTreeObserver(); 
      obs.removeGlobalOnLayoutListener(this); 
      if (maxLine == 0) { 
       int lineEndIndex = tv.getLayout().getLineEnd(0); 
       String text = tv.getText().subSequence(0, lineEndIndex - expandText.length() + 1) + " " + expandText; 
       tv.setText(text); 
       tv.setMovementMethod(LinkMovementMethod.getInstance()); 
       tv.setText(addClickablePartTextViewResizable(Html.fromHtml(tv.getText().toString()), tv, maxLine, expandText, viewMore), TextView.BufferType.SPANNABLE); 
       tv.setTextColor(Color.BLACK); 
      } else if (maxLine > 0 && tv.getLineCount() >= maxLine) { 
       int lineEndIndex = tv.getLayout().getLineEnd(maxLine - 1); 
       String text = tv.getText().subSequence(0, lineEndIndex - expandText.length() + 1) + " " + expandText; 
       tv.setText(text); 
       tv.setMovementMethod(LinkMovementMethod.getInstance()); 
       tv.setText(addClickablePartTextViewResizable(Html.fromHtml(tv.getText().toString()), tv, maxLine, expandText, viewMore), TextView.BufferType.SPANNABLE); 
       tv.setTextColor(Color.BLACK); 
      } else { 
       int lineEndIndex = tv.getLayout().getLineEnd(tv.getLayout().getLineCount() - 1); 
       String text = tv.getText().subSequence(0, lineEndIndex) + " " + expandText; 
       tv.setText(text); 
       tv.setMovementMethod(LinkMovementMethod.getInstance()); 
       tv.setText(addClickablePartTextViewResizable(Html.fromHtml(tv.getText().toString()), tv, lineEndIndex, expandText, viewMore), TextView.BufferType.SPANNABLE); 
       tv.setTextColor(Color.BLACK); 
      } 
     } 
    }); 
} 

private static SpannableStringBuilder addClickablePartTextViewResizable(final Spanned strSpanned, final TextView tv, final int maxLine, final String spanableText, final boolean viewMore) { 
    String str = strSpanned.toString(); 
    SpannableStringBuilder ssb = new SpannableStringBuilder(strSpanned); 
    if (str.contains(spanableText)) { 
     ssb.setSpan(new MySpannable(false) { 

      @Override 
      public void onClick(View widget) { 
       if (viewMore) { 
        tv.setLayoutParams(tv.getLayoutParams()); 
        tv.setText(tv.getTag().toString(), TextView.BufferType.SPANNABLE); 
        tv.invalidate(); 
        makeTextViewResizable(tv, -1, "...Less", false); 
       } else { 
        tv.setLayoutParams(tv.getLayoutParams()); 
        tv.setText(tv.getTag().toString(), TextView.BufferType.SPANNABLE); 
        tv.invalidate(); 
        makeTextViewResizable(tv, 3, "...More", true); 
       } 
      } 
     }, str.indexOf(spanableText), str.indexOf(spanableText) + spanableText.length(), 0); 
    } 
    return ssb; 
} 

Answer 1

下面的解決方案將添加查看更多選項，如果文本的長度大於150，將ellipsize文本上查看150 characters.On點擊更多，它會顯示與顯示更少的選擇和點擊顯示不完整的文本再次將文本橢圓化爲150個字符。它與循環查看項目的文本視圖效果很好，並且應該與listview一起工作。

if(inputText.length()>150) 
     { 
      String text=inputText.substring(0,150)+"..."; 
      final String fulltext=inputText; 

      final SpannableString ss = new SpannableString(text+"View More"); 

      ClickableSpan span1 = new ClickableSpan() { 
       @Override 
       public void onClick(View textView) { 
        // do some thing 
        SpannableString ss1 = new SpannableString(fulltext+"Show Less"); 
        ClickableSpan span2 = new ClickableSpan() { 
         @Override 
         public void onClick(View textView) { 
          // do some thing 
          textView.setText(ss); 
          textView.setMovementMethod(LinkMovementMethod.getInstance()); 

         } 
        }; 
        ss1.setSpan(span2, fulltext.length(), ss1.length(), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); 
        ss1.setSpan(new ForegroundColorSpan(Color.BLUE), fulltext.length(), ss1.length(), 
          Spannable.SPAN_EXCLUSIVE_EXCLUSIVE); 


        textView.setText(ss1); 
        textView.setMovementMethod(LinkMovementMethod.getInstance()); 
       } 
      }; 
      ss.setSpan(span1, 153, 162, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); 
      ss.setSpan(new ForegroundColorSpan(Color.BLUE), 153,162, 
        Spannable.SPAN_EXCLUSIVE_EXCLUSIVE); 

      textView.setText(ss); 
      textView.setMovementMethod(LinkMovementMethod.getInstance()); 
     } 
else 
     { 
      textView.setText(inputText); 
     }