大多数EditText和TextView的text
输入类型实现(除了URI、password等)允许使用Emoji,尽管在大多数Google键盘配置中这个按钮是隐藏的。是否有一种方法可以禁用在EditText中输入Emoji?是否有一个可以与textMultiLine
配对的inputType参数可以禁用Emoji?
大多数EditText和TextView的text
输入类型实现(除了URI、password等)允许使用Emoji,尽管在大多数Google键盘配置中这个按钮是隐藏的。是否有一种方法可以禁用在EditText中输入Emoji?是否有一个可以与textMultiLine
配对的inputType参数可以禁用Emoji?
修改 build.gradle 文件,在你的项目中添加 XEditText:
dependencies{
compile 'com.xw.repo:xedittext:2.0.0@aar'
}
接着,在你的layout.xml文件中:
<com.xw.repo.XEditText
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:x_disableEmoji="true"/>
像这样自定义EditText:
public class CustomEditText extends EditText {
public CustomEditText(Context context) {
super(context);
init();
}
public CustomEditText(Context context, AttributeSet attrs) {
super(context, attrs);
init();
}
public CustomEditText(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
init();
}
private void init() {
setFilters(new InputFilter[]{new EmojiExcludeFilter()});
}
private class EmojiExcludeFilter implements InputFilter {
@Override
public CharSequence filter(CharSequence source, int start, int end, Spanned dest, int dstart, int dend) {
for (int i = start; i < end; i++) {
int type = Character.getType(source.charAt(i));
if (type == Character.SURROGATE || type == Character.OTHER_SYMBOL) {
return "";
}
}
return null;
}
}
}
两者都能正常使用!
有一个巧妙的方法可以禁用键盘上的表情符号..
你只需要将
android:inputType="textEmailAddress"
设置给 EditText
即可。
<EditText
android:id="@+id/edt_note"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="@string/note"
android:inputType="textEmailAddress"
android:padding="10dp"
android:textColor="@color/white" />
我不确定它在所有情况下都有效,但在我的情况下,它对我起了作用...
在xml文件中,digits
属性可以为EditText控件提供值,你可以在该属性中设置所有接受的字符。
<EditText
android:layout_width="match_parent"
android:layout_height="match_parent"
android:digits="qwertyuiopasdfghjklzxcvbnm 1234567890 QWERTYUIOPASDFGHJKLZXCVBNM" />
我知道,这不是最好的解决办法,但起作用了 :)
添加这个表情筛选器类:
public class EmojiFilter {
public static InputFilter[] getFilter()
{
InputFilter EMOJI_FILTER = new InputFilter() {
@Override
public CharSequence filter(CharSequence source, int start, int end, Spanned dest, int dstart, int dend) {
for (int index = start; index < end; index++) {
int type = Character.getType(source.charAt(index));
if (type == Character.SURROGATE || type==Character.NON_SPACING_MARK
|| type==Character.OTHER_SYMBOL) {
return "";
}
}
return null;
}
};
return new InputFilter[]{EMOJI_FILTER};
}
}
如果想在编辑文本中禁用表情符号,请按照以下步骤进行:
editText.setFilters(EmojiFilter.getFilter());
有一些表情符号无法输入,因此我添加了它们:
type==Character.NON_SPACING_MARK || type==Character.OTHER_SYMBOL
在 if 条件中。
我已经为此编写了Kotlin扩展。它还可以防止复制粘贴表情符号。
扩展:
fun EditText.filterEmoji() {
filters = arrayOf(InputFilter { source, _, _, _, _, _ ->
source.filter { Character.getType(it) != Character.SURROGATE.toInt() }
})
}
editText.filterEmoji()
就这样。享受吧!
Character.getType(it) != Character.SURROGATE.toInt() && Character.getType(it) != Character.OTHER_SYMBOL.toInt()
- Shailendra Madda没有任何方法可以完全禁用表情符号。键盘可以根据它看到的任何模式以任何最佳方式来操作,因此没有设置可以防止表情符号。如果必须要防止它,请使用TextWatcher来列入白名单或黑名单字符。
@woxingxiao提供的代码非常好,但当您在xml中指定任何inputType时(例如android:inputType="textMultiLine"
),该代码就会出现问题。
我对他的建议进行了一些修改,我认为它很好用。
public class EmojiExcludeEditText extends EditText {
private EmojiExcludeFilter emojiExcludeFilter;
public EmojiExcludeEditText(Context context) {
super(context);
init();
}
public EmojiExcludeEditText(Context context, AttributeSet attrs) {
super(context, attrs);
init();
}
public EmojiExcludeEditText(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
init();
}
private void init() {
if (emojiExcludeFilter == null) {
emojiExcludeFilter = new EmojiExcludeFilter();
}
setFilters(new InputFilter[]{emojiExcludeFilter});
}
@Override
public void setFilters(InputFilter[] filters) {
if (filters.length != 0) { //if length == 0 it will here return when init() is called
boolean add = true;
for (InputFilter inputFilter : filters) {
if (inputFilter == emojiExcludeFilter) {
add = false;
break;
}
}
if (add) {
filters = Arrays.copyOf(filters, filters.length + 1);
filters[filters.length - 1] = emojiExcludeFilter;
}
}
super.setFilters(filters);
}
private class EmojiExcludeFilter implements InputFilter {
@Override
public CharSequence filter(CharSequence source, int start, int end, Spanned dest, int dstart, int dend) {
for (int i = start; i < end; i++) {
int type = Character.getType(source.charAt(i));
if (type == Character.SURROGATE || type == Character.OTHER_SYMBOL) {
return "";
}
}
return null;
}
}
}
public static InputFilter getEditTextFilterEmoji()
{
return new InputFilter()
{
@Override
public CharSequence filter(CharSequence source, int start, int end, Spanned dest, int dstart, int dend)
{
CharSequence sourceOriginal = source;
source = replaceEmoji(source);
end = source.toString().length();
if (end == 0) return ""; //Return empty string if the input character is already removed
if (! sourceOriginal.toString().equals(source.toString()))
{
char[] v = new char[end - start];
TextUtils.getChars(source, start, end, v, 0);
String s = new String(v);
if (source instanceof Spanned)
{
SpannableString sp = new SpannableString(s);
TextUtils.copySpansFrom((Spanned) source, start, end, null, sp, 0);
return sp;
}
else
{
return s;
}
}
else
{
return null; // keep original
}
}
private String replaceEmoji(CharSequence source)
{
String notAllowedCharactersRegex = "[^a-zA-Z0-9@#\\$%\\&\\-\\+\\(\\)\\*;:!\\?\\~`£\\{\\}\\[\\]=\\.,_/\\\\\\s'\\\"<>\\^\\|÷×]";
return source.toString()
.replaceAll(notAllowedCharactersRegex, "");
}
};
}
然后将其设置为EditText过滤器;
InputFilter[] filterArray = new InputFilter[] {getEditTextFilterEmoji()}
editText.setFilters(filterArray);
您可以使用输入过滤器来删除不需要的字符,这里我使用ASCII值进行过滤。
public class CustomEditText extends AppCompatEditText {
private InputFilter unwantedCharacterFilter;
public CustomEditText(Context context) {
super(context);
}
public CustomEditText(Context context, AttributeSet attrs) {
super(context, attrs);
}
public CustomEditText(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
}
private void init() {
setFilters(new InputFilter[]{});
}
private InputFilter getUnwantedCharacterFilter() {
if (null == unwantedCharacterFilter) {
unwantedCharacterFilter = new InputFilter() {
@Override
public CharSequence filter(CharSequence source, int start, int end, Spanned dest, int dstart, int dend) {
if (!TextUtils.isEmpty(source)) {
for (int index = start; index < end; index++) {
if (source.charAt(index) < 0 || source.charAt(index) > 177) {
return "";
}
}
}
return null;
}
};
}
return unwantedCharacterFilter;
}
@Override
public void setFilters(InputFilter[] filters) {
List<InputFilter> filterList = new ArrayList<>(Arrays.asList(filters));
filterList.add(getUnwantedCharacterFilter());
InputFilter specifiedFilters[] = filterList.toArray(new InputFilter[]{});
super.setFilters(specifiedFilters);
}
}
Emoji使用Unicode编码,其代码点范围为U+1F604至U+1F539。而Character.SURROGATE保留了超出Emoji范围的代码点范围。
val EMOJI_FILTER =InputFilter { source, start, end, dest, dstart, dend ->
for (index in start until end) {
val type = Character.getType(source[index])
if (type == Character.SURROGATE.toInt()) {
return@InputFilter ""
}
}
null
}
etLintEdt.filters = arrayOf(EMOJI_FILTER)