如何讓用戶突出顯示TextView

Question

我正在爲學生開發一些帶有一些TextView的Android項目，但我希望用戶能夠長時間點擊並獲取選項以突出顯示某些內容的不同顏色部分聖經應用程序或Adobe Reader。標記文本顏色的選項發生在長時間點擊。 我會感謝任何指導，使這項工作。

Answer 1

使用Spannable字符串風格的標準 例子：

String firstWord = "Hello"; 
String secondWord = "World!"; 

TextView tvHelloWorld = (TextView)findViewById(R.id.tvHelloWorld); 

// Create a span that will make the text red 
ForegroundColorSpan redForegroundColorSpan = new ForegroundColorSpan(
     getResources().getColor(android.R.color.holo_red_dark)); 

// Use a SpannableStringBuilder so that both the text and the spans are mutable 
SpannableStringBuilder ssb = new SpannableStringBuilder(firstWord); 

// Apply the color span 
ssb.setSpan(
     redForegroundColorSpan,   // the span to add 
     0,         // the start of the span (inclusive) 
     ssb.length(),      // the end of the span (exclusive) 
     Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); // behavior when text is later inserted into the SpannableStringBuilder 
              // SPAN_EXCLUSIVE_EXCLUSIVE means to not extend the span when additional 
              // text is added in later 

// Add a blank space 
ssb.append(" "); 

// Create a span that will strikethrough the text 
StrikethroughSpan strikethroughSpan = new StrikethroughSpan(); 

// Add the secondWord and apply the strikethrough span to only the second word 
ssb.append(secondWord); 
ssb.setSpan(
     strikethroughSpan, 
     ssb.length() - secondWord.length(), 
     ssb.length(), 
     Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); 

// Set the TextView text and denote that it is Editable 
// since it's a SpannableStringBuilder 
tvHelloWorld.setText(ssb, TextView.BufferType.EDITABLE); 

來源：https://guides.codepath.com/android/Working-with-the-TextView

Answer 2

更好地使用圖書館吧。 請參閱此鏈接。 https://github.com/athkalia/EmphasisTextView