正如标题所说,我想知道是否有可能在单个textview元素中实现两个不同颜色的字符。
当前回答
我已经这么做了,试试吧:
TextView textView=(TextView)findViewById(R.id.yourTextView);//init
//here I am appending two string into my textView with two diff colors.
//I have done from fragment so I used here getActivity(),
//If you are trying it from Activity then pass className.this or this;
textView.append(TextViewUtils.getColoredString(getString(R.string.preString),ContextCompat.getColor(getActivity(),R.color.firstColor)));
textView.append(TextViewUtils.getColoredString(getString(R.string.postString),ContextCompat.getColor(getActivity(),R.color.secondColor)));
在你的TextViewUtils类中添加这个方法:
/***
*
* @param mString this will setup to your textView
* @param colorId text will fill with this color.
* @return string with color, it will append to textView.
*/
public static Spannable getColoredString(String mString, int colorId) {
Spannable spannable = new SpannableString(mString);
spannable.setSpan(new ForegroundColorSpan(colorId), 0, spannable.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
Log.d(TAG,spannable.toString());
return spannable;
}
其他回答
是的,如果你用html的font-color属性格式化字符串,然后把它传递给方法html . fromhtml(你的文本在这里)
String text = "<font color=#cc0029>First Color</font> <font color=#ffcc00>Second Color</font>";
yourtextview.setText(Html.fromHtml(text));
你可以在没有HTML的情况下打印多种颜色的行:
TextView textView = (TextView) findViewById(R.id.mytextview01);
Spannable word = new SpannableString("Your message");
word.setSpan(new ForegroundColorSpan(Color.BLUE), 0, word.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
textView.setText(word);
Spannable wordTwo = new SpannableString("Your new message");
wordTwo.setSpan(new ForegroundColorSpan(Color.RED), 0, wordTwo.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
textView.append(wordTwo);
芬兰湾的科特林回答
fun setTextColor(tv:TextView, startPosition:Int, endPosition:Int, color:Int){
val spannableStr = SpannableString(tv.text)
val underlineSpan = UnderlineSpan()
spannableStr.setSpan(
underlineSpan,
startPosition,
endPosition,
Spanned.SPAN_INCLUSIVE_EXCLUSIVE
)
val backgroundColorSpan = ForegroundColorSpan(this.resources.getColor(R.color.agreement_color))
spannableStr.setSpan(
backgroundColorSpan,
startPosition,
endPosition,
Spanned.SPAN_INCLUSIVE_EXCLUSIVE
)
val styleSpanItalic = StyleSpan(Typeface.BOLD)
spannableStr.setSpan(
styleSpanItalic,
startPosition,
endPosition,
Spanned.SPAN_INCLUSIVE_EXCLUSIVE
)
tv.text = spannableStr
}
之后,调用上述函数。你可以拨打多个电话:
setTextColor(textView, 0, 61, R.color.agreement_color)
setTextColor(textView, 65, 75, R.color.colorPrimary)
输出: 你可以看到下划线和不同的颜色。
使用SpannableStringBuilder
SpannableStringBuilder builder = new SpannableStringBuilder();
SpannableString str1= new SpannableString("Text1");
str1.setSpan(new ForegroundColorSpan(Color.RED), 0, str1.length(), 0);
builder.append(str1);
SpannableString str2= new SpannableString(appMode.toString());
str2.setSpan(new ForegroundColorSpan(Color.GREEN), 0, str2.length(), 0);
builder.append(str2);
TextView tv = (TextView) view.findViewById(android.R.id.text1);
tv.setText( builder, TextView.BufferType.SPANNABLE);
Kotlin中的生成器函数:
val text = buildSpannedString {
append("My red text")
setSpan(
ForegroundColorSpan(ContextCompat.getColor(requireContext(), R.color.red)),
3,
6,
Spannable.SPAN_EXCLUSIVE_EXCLUSIVE
)
}
textView?.setText(text)
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