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/**
* Created by Xinghai.Zhao on 18/05/23.
*/
/*
*作者:赵星海 QQ441602661(加好友问题:黑A88888)
*时间:18/05/24 15:56
*用途: 用于防止表情输出和最大长度限制
*/
public class ContainsEmojiEditText extends android.support.v7.widget.AppCompatEditText {
//cursor position
private final int INPUTMAX_LIMIT = 10; //设置可输入的最大长度()
//text before inputText;
private String inputAfterText;
//is reset text
private boolean hasReset;
private Context mContext;
public ContainsEmojiEditText(Context context) {
super(context);
this.mContext = context;
initEditText();
}
public ContainsEmojiEditText(Context context, AttributeSet attrs) {
super(context, attrs);
this.mContext = context;
initEditText();
}
public ContainsEmojiEditText(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
this.mContext = context;
initEditText();
}
private static final int ID_PASTE = android.R.id.paste;
@Override
public boolean onTextContextMenuItem(int id) {
if (id == ID_PASTE) {
hasReset = true;
ClipboardManager clip = (ClipboardManager) getContext().getSystemService(Context.CLIPBOARD_SERVICE);
inputAfterText = "" + clip.getText();
}
return super.onTextContextMenuItem(id);
}
private void initEditText() {
InputFilter[] textFilters = new InputFilter[1];
textFilters[0] = new InputFilter.LengthFilter(INPUTMAX_LIMIT) {
@Override
public CharSequence filter(CharSequence source, int start, int end,
Spanned dest, int dstart, int dend) {
if (source.length() > 0 && dest.length() == INPUTMAX_LIMIT) {
ToastUtils.Toast(mContext, "长度最多十位哦!");
}
return super.filter(source, start, end, dest, dstart, dend);
}
};
setFilters(textFilters);
addTextChangedListener(new TextWatcher() {
private final int charMaxNum = INPUTMAX_LIMIT;
int cursorPos;
@Override
public void beforeTextChanged(CharSequence s, int start, int before, int count) {
cursorPos = s.length();
if (hasReset) {
hasReset = false;
} else {
inputAfterText = s.toString();
}
}
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
if (cursorPos < s.length()) {
if (start + before < start + count) {
CharSequence input = s.subSequence(start + before, start + count);
if (containsEmoji(input.toString())) {
ToastUtils.Toast(mContext, "不允许输入表情哦!");
setText(inputAfterText);
resetCursor(start + before);
}
}
}
}
@Override
public void afterTextChanged(Editable editable) {
int length = getText().length();
if (lisen != null) {
lisen.update(length);
}
}
});
}
private void resetCursor(int index) {
CharSequence text = getText();
if (text instanceof Spannable) {
Spannable spanText = (Spannable) text;
Selection.setSelection(spanText, index);
}
}
public interface OnEmojiEditLisen {
void update(int length);
}
private OnEmojiEditLisen lisen;
public void setOnEmojiEditLisen(OnEmojiEditLisen lisen) {
this.lisen = lisen;
}
/**
* check 'emoji' isExit
*
* @param source
* @return
*/
public static boolean containsEmoji(String source) {
int len = source.length();
for (int i = 0; i < len; i++) {
char codePoint = source.charAt(i);
if (!isEmojiCharacter(codePoint)) {
return true;
}
}
return false;
}
/**
* check is or not 'emoji'
*
* @param codePoint
* @return
*/
private static boolean isEmojiCharacter(char codePoint) {
return (codePoint == 0x0) || (codePoint == 0x9) || (codePoint == 0xA) ||
(codePoint == 0xD) || ((codePoint >= 0x20) && (codePoint <= 0xD7FF)) ||
((codePoint >= 0xE000) && (codePoint <= 0xFFFD)) || ((codePoint >= 0x10000)
&& (codePoint <= 0x10FFFF));
}
}