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
自从API 24以来,你有FROM_HTML_OPTION_USE_CSS_COLORS,所以你可以在CSS中定义颜色,而不是一直重复使用font color=" 更清楚-当你有一些html,你想突出一些预定义的标签-你只需要在你的html顶部添加CSS片段
其他回答
@Swapnil Kotwal回答的Kotlin版本。
Android Studio 4.0.1, Kotlin 1.3.72
val greenText = SpannableString("This is green,")
greenText.setSpan(ForegroundColorSpan(resources.getColor(R.color.someGreenColor), null), 0, greenText.length, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE)
yourTextView.text = greenText
val yellowText = SpannableString("this is yellow, ")
yellowText.setSpan(ForegroundColorSpan(resources.getColor(R.color.someYellowColor), null), 0, yellowText.length, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE)
yourTextView.append(yellowText)
val redText = SpannableString("and this is red.")
redText.setSpan(ForegroundColorSpan(resources.getColor(R.color.someRedColor), null), 0, redText.length, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE)
yourTextView.append(redText)
if (Build.VERSION.SDK_INT >= 24) {
Html.fromHtml(String, flag) // for 24 API and more
} else {
Html.fromHtml(String) // or for older API
}
用于24个API及以上(标志)
public static final int FROM_HTML_MODE_COMPACT = 63;
public static final int FROM_HTML_MODE_LEGACY = 0;
public static final int FROM_HTML_OPTION_USE_CSS_COLORS = 256;
public static final int FROM_HTML_SEPARATOR_LINE_BREAK_BLOCKQUOTE = 32;
public static final int FROM_HTML_SEPARATOR_LINE_BREAK_DIV = 16;
public static final int FROM_HTML_SEPARATOR_LINE_BREAK_HEADING = 2;
public static final int FROM_HTML_SEPARATOR_LINE_BREAK_LIST = 8;
public static final int FROM_HTML_SEPARATOR_LINE_BREAK_LIST_ITEM = 4;
public static final int FROM_HTML_SEPARATOR_LINE_BREAK_PARAGRAPH = 1;
public static final int TO_HTML_PARAGRAPH_LINES_CONSECUTIVE = 0;
public static final int TO_HTML_PARAGRAPH_LINES_INDIVIDUAL = 1;
更多信息
让普通函数转换你的字符串是可扩展的,像这样。
//pass param textviewid ,start,end,string
//R.color.Red it's your color you can change it as requirement
fun SpannableStringWithColor(view: TextView,start:Int,end:Int, s: String) {
val wordtoSpan: Spannable =
SpannableString(s)
wordtoSpan.setSpan(
ForegroundColorSpan(ContextCompat.getColor(view.context, R.color.Red)),
start,
end,
Spannable.SPAN_EXCLUSIVE_EXCLUSIVE
)
view.text = wordtoSpan
}
像这样的要求我们可以在任何地方使用。
SpannableStringWithColor(tvMobileNo,0,14,"Mobile Number : " + "123456789")
SpannableStringWithColor(tvEmail,0,5,"Email : " + "abc@gmail.com" "))
SpannableStringWithColor(tvAddress,0,8,"Address : " + "Delhi India")
芬兰湾的科特林:
@JvmStatic
@BindingAdapter(
"app:txt1",
"app:txt2",
"app:color1",
"app:color2",
requireAll = false
)
fun setColors(
txtView: AppCompatTextView,
txt1: String,
txt2: String,
color1: Int,
color2: Int
) {
txtView.setColors(txt1 = txt1, txt2 = txt2, color1 = color1, color2)
}
fun AppCompatTextView.setColors(txt1: String, txt2: String, color1: Int, color2: Int) {
val word: Spannable = SpannableString(txt1)
word.setSpan(
ForegroundColorSpan(ContextCompat.getColor(this.context, color1)),
0,
word.length,
Spannable.SPAN_EXCLUSIVE_EXCLUSIVE
)
this.text = word
val wordTwo: Spannable = SpannableString(txt2)
wordTwo.setSpan(
ForegroundColorSpan(ContextCompat.getColor(this.context, color2)),
0,
wordTwo.length,
Spannable.SPAN_EXCLUSIVE_EXCLUSIVE
)
this.append(wordTwo)
}
<androidx.appcompat.widget.AppCompatTextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:txt1="@{}"
app:txt2="@{}"
app:color1="@{}"
app:color2="@{}" />
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);
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