突出显示ListView项目中的搜索文本
我有ListView我正在使用自定义适配器来显示数据。现在我想改变搜索文本字母颜色，如上面的屏幕截图所示。
以下是SearchView
@Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.actionbar_menu_item, menu);
SearchManager searchManager = (SearchManager) getSystemService(Context.SEARCH_SERVICE);
final SearchView searchView = (SearchView) menu.findItem(R.id.action_search)
.getActionView();
searchView.setSearchableInfo(searchManager
.getSearchableInfo(getComponentName()));
searchView.setOnQueryTextListener(this);
return super.onCreateOptionsMenu(menu);
}
public boolean onQueryTextChange(String newText) {
// this is adapter that will be filtered
if (TextUtils.isEmpty(newText)){
lvCustomList.clearTextFilter();
}
else{
lvCustomList.setFilterText(newText.toString());
}
return false;
}
@Override
public boolean onQueryTextSubmit(String query) {
return false;
}
谢谢。
3 个答案:
答案 0 :(得分：26)
我假设你有一个自定义适配器，getCount()和getView()已经实现并且已经过滤了项目，你只需要加粗部分。
要实现这一点，您需要使用SpannableString，它基本上是带有标记的文本。例如，TextAppearanceSpan可用于更改字体，字体样式，大小和颜色。
因此，您应该更新适配器的getView()，以便将使用textView.setText()的部分更改为或多或少的内容：
String filter = ...;
String itemValue = ...;
int startPos = itemValue.toLowerCase(Locale.US).indexOf(filter.toLowerCase(Locale.US));
int endPos = startPos + filter.length();
if (startPos != -1) // This should always be true, just a sanity check
{
Spannable spannable = new SpannableString(itemValue);
ColorStateList blueColor = new ColorStateList(new int[][] { new int[] {}}, new int[] { Color.BLUE });
TextAppearanceSpan highlightSpan = new TextAppearanceSpan(null, Typeface.BOLD, -1, blueColor, null);
spannable.setSpan(highlightSpan, startPos, endPos, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
textView.setText(spannable);
}
else
textView.setText(itemValue);
答案 1 :(得分：0)
Android搜索突出示例[案例不敏感订单]
1。 简单搜索（Html）： [特定字词]
public static void setSearchTextHighlightSimpleSpannable(TextView textView, String fullText, String searchText) {
searchText = searchText.replace("'", "");
// highlight search text
if (null != searchText && !searchText.isEmpty()) {
SpannableStringBuilder wordSpan = new SpannableStringBuilder(fullText);
Pattern p = Pattern.compile(searchText, Pattern.CASE_INSENSITIVE);
Matcher m = p.matcher(fullText);
while (m.find()) {
int wordStart = m.start();
int wordEnd = m.end();
// Now highlight based on the word boundaries
ColorStateList redColor = new ColorStateList(new int[][]{new int[]{}}, new int[]{0xffa10901});
TextAppearanceSpan highlightSpan = new TextAppearanceSpan(null, Typeface.BOLD, -1, redColor, null);
wordSpan.setSpan(highlightSpan, wordStart, wordEnd, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
wordSpan.setSpan(new BackgroundColorSpan(0xFFFCFF48), wordStart, wordEnd, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
wordSpan.setSpan(new RelativeSizeSpan(1.25f), wordStart, wordEnd, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
}
textView.setText(wordSpan, TextView.BufferType.SPANNABLE);
} else {
textView.setText(fullText);
}
}
2。 简单搜索（可跨越）： [特定字词]
public static void setAdvancedTitleHighlight(TextView textView, String fullText, String searchText) {
searchText = searchText.replace("'", "");
final String WORD_SINGLE = " ";
// highlight search text
if (null != searchText && !searchText.isEmpty() && !searchText.equals(WORD_SINGLE)) {
SpannableStringBuilder wordSpan = new SpannableStringBuilder(fullText);
Pattern p = Pattern.compile(searchText, Pattern.CASE_INSENSITIVE);
Matcher m = p.matcher(fullText);
while (m.find()) {
final char WORD_BOUNDARY = ' ';
int wordStart = m.start();
while (wordStart >= 0 && fullText.charAt(wordStart) != WORD_BOUNDARY) {
--wordStart;
}
wordStart = wordStart + 1;
int wordEnd = m.end();
while (wordEnd < fullText.length() && fullText.charAt(wordEnd) != WORD_BOUNDARY) {
++wordEnd;
}
// Now highlight based on the word boundaries
ColorStateList redColor = new ColorStateList(new int[][]{new int[]{}}, new int[]{0xffa10901});
TextAppearanceSpan highlightSpan = new TextAppearanceSpan(null, Typeface.BOLD, -1, redColor, null);
wordSpan.setSpan(highlightSpan, wordStart, wordEnd, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
wordSpan.setSpan(new BackgroundColorSpan(0xFFFCFF48), wordStart, wordEnd, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
wordSpan.setSpan(new RelativeSizeSpan(1.25f), wordStart, wordEnd, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
}
textView.setText(wordSpan, TextView.BufferType.SPANNABLE);
} else {
textView.setText(fullText);
}
}
3。 快速搜索（高级）： [全字]
public static void setAdvancedDetailsHighlight(TextView textView, String fullText, String searchText) {
searchText = searchText.replace("'", "");
final String WORD_SINGLE = " ";
final String WORD_SINGLE1 = "\n";
final String WORD_SINGLE2 = "(";
final String WORD_SINGLE3 = ")";
final String WORD_SINGLE4 = "।";
final String WORD_SINGLE5 = ".";
final String WORD_SINGLE6 = ",";
final String WORD_SINGLE7 = ";";
final String WORD_SINGLE8 = "?";
final String WORD_SINGLE9 = "-";
final String WORD_SINGLE10 = "+";
// highlight search text
if (null != searchText && !searchText.isEmpty() && !searchText.equals(WORD_SINGLE) && !searchText.equals(WORD_SINGLE1) && !searchText.equals(WORD_SINGLE2)
&& !searchText.equals(WORD_SINGLE3) && !searchText.equals(WORD_SINGLE4) && !searchText.equals(WORD_SINGLE5)
&& !searchText.equals(WORD_SINGLE6) && !searchText.equals(WORD_SINGLE7) && !searchText.equals(WORD_SINGLE8)
&& !searchText.equals(WORD_SINGLE9) && !searchText.equals(WORD_SINGLE10)) {
SpannableStringBuilder wordSpan = new SpannableStringBuilder(fullText);
Pattern p = Pattern.compile(searchText, Pattern.CASE_INSENSITIVE);
Matcher m = p.matcher(fullText);
while (m.find()) {
final char WORD_BOUNDARY = ' ';
final char WORD_BOUNDARY1 = '\n';
final char WORD_BOUNDARY2 = '(';
final char WORD_BOUNDARY3 = ')';
final char WORD_BOUNDARY4 = '।';
final char WORD_BOUNDARY5 = '.';
final char WORD_BOUNDARY6 = ',';
final char WORD_BOUNDARY7 = ';';
final char WORD_BOUNDARY8 = '?';
final char WORD_BOUNDARY9 = '-';
int wordStart = m.start();
while (wordStart >= 0 && fullText.charAt(wordStart) != WORD_BOUNDARY
&& fullText.charAt(wordStart) != WORD_BOUNDARY1
&& fullText.charAt(wordStart) != WORD_BOUNDARY2
&& fullText.charAt(wordStart) != WORD_BOUNDARY3
&& fullText.charAt(wordStart) != WORD_BOUNDARY4
&& fullText.charAt(wordStart) != WORD_BOUNDARY5
&& fullText.charAt(wordStart) != WORD_BOUNDARY6
&& fullText.charAt(wordStart) != WORD_BOUNDARY7
&& fullText.charAt(wordStart) != WORD_BOUNDARY8
&& fullText.charAt(wordStart) != WORD_BOUNDARY9) {
--wordStart;
}
wordStart = wordStart + 1;
int wordEnd = m.end();
while (wordEnd < fullText.length() && fullText.charAt(wordEnd) != WORD_BOUNDARY
&& fullText.charAt(wordEnd) != WORD_BOUNDARY1
&& fullText.charAt(wordEnd) != WORD_BOUNDARY2
&& fullText.charAt(wordEnd) != WORD_BOUNDARY3
&& fullText.charAt(wordEnd) != WORD_BOUNDARY4
&& fullText.charAt(wordEnd) != WORD_BOUNDARY5
&& fullText.charAt(wordEnd) != WORD_BOUNDARY6
&& fullText.charAt(wordEnd) != WORD_BOUNDARY7
&& fullText.charAt(wordEnd) != WORD_BOUNDARY8
&& fullText.charAt(wordEnd) != WORD_BOUNDARY9) {
++wordEnd;
}
// Now highlight based on the word boundaries
ColorStateList redColor = new ColorStateList(new int[][]{new int[]{}}, new int[]{0xffa10901});
TextAppearanceSpan highlightSpan = new TextAppearanceSpan(null, Typeface.BOLD, -1, redColor, null);
wordSpan.setSpan(highlightSpan, wordStart, wordEnd, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
wordSpan.setSpan(new BackgroundColorSpan(0xFFFCFF48), wordStart, wordEnd, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
wordSpan.setSpan(new RelativeSizeSpan(1.25f), wordStart, wordEnd, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
}
textView.setText(wordSpan, TextView.BufferType.SPANNABLE);
} else {
textView.setText(fullText);
}
}
4. 详情搜索（高级）： [全字]
{{1}}
如果你使用任何一种方法，你的问题就会解决...... IngShaaAllah。
答案 2 :(得分：0)
您可以使用 CodeView 库来实现此功能，您只需要在适配器中创建 2 个变量来存储搜索结果的模式和突出显示的颜色，
TEXTURE3并在适配器中为图案和颜色创建一个 setter
private Pattern syntaxPattern;
private Color highlightColor = Color.MAGENTA;
然后在 RecyclerAdapter 中的 ArrayAdapter 或 ViewHolder 的 getView 方法中，您需要将此模式添加到 CodeView 实例并删除旧模式（从上次搜索结果中）
public void updateSyntaxPattern(Pattern pattern) {
syntaxPattern = pattern;
notifyDataSetChanged();
}
现在在 SearchView onQueryTextSubmit 或 onQueryTextChange 中，取决于您希望荧光笔何时工作，您将选择其中之一来从搜索结果中制作模式并将其设置为适配器
if(syntaxPattern != null) {
codeView.resetSyntaxPatternList();
codeView.addSyntaxPattern(syntaxPattern, highlightColor);
}
它会像你想要的那样工作
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