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
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="@{}" />
其他回答
试试这个:
mBox = new TextView(context);
mBox.setText(Html.fromHtml("<b>" + title + "</b>" + "<br />" +
"<small>" + description + "</small>" + "<br />" +
"<small>" + DateAdded + "</small>"));
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)
我已经写下了一些类似于这个问题的其他问题的代码,但这个问题被复制了,所以我不能回答那里,所以我只是把我的代码放在这里,如果有人寻找相同的要求。
它不是完全工作的代码,你需要做一些小的改变让它工作。
代码如下:
我使用@Graeme的想法使用可扩展文本。
String colorfulText = "colorfulText";
Spannable span = new SpannableString(colorfulText);
for ( int i = 0, len = colorfulText.length(); i < len; i++ ){
span.setSpan(new ForegroundColorSpan(getRandomColor()), i, i+1,Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
}
((TextView)findViewById(R.id.txtSplashscreenCopywrite)).setText(span);
随机色法:
private int getRandomColor(){
Random rnd = new Random();
return Color.argb(255, rnd.nextInt(256), rnd.nextInt(256), rnd.nextInt(256));
}
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
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);
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