php ios 判断字符串长度,iOStextfield 限制输入字符长度和过滤表情符号
//增加修改框
-(void)creatSaveView{
UILabel?* lab = [[UILabel?alloc]init];
if?(self.searchType?==?1) {
lab.frame?=?CGRectMake(14,?8?*?KWIDTH?+?64,?IPHONE_WIDTH?-?100,?16?*KWIDTH);
}else{
lab.frame?=?CGRectMake(14,?8?*?KWIDTH,?IPHONE_WIDTH?-?100,?16?*?KWIDTH);
}
lab.text?=?@"備注名";
lab.font?= [UIFont?systemFontOfSize:14];
lab.textColor?=?kColor(137,?137,?137);
[self.view?addSubview:lab];
UIView?*view=[[UIView?alloc]?init];
if?(self.searchType?==?1) {
view.frame?=?CGRectMake(0,?32*KWIDTH?+?64,?IPHONE_WIDTH,?40*KWIDTH);
}else{
view.frame?=?CGRectMake(0,?32*KWIDTH,?IPHONE_WIDTH,?40*KWIDTH);
}
UIView?*lineViewlight3=[[UIView?alloc]?initWithFrame:CGRectMake(0,0,IPHONE_WIDTH,?0.5)];
lineViewlight3.backgroundColor=kColor(200,200?,?200);
lineViewlight3.alpha=0.8;
[view?addSubview:lineViewlight3];
UIView?*lineViewlight4=[[UIView?alloc]?initWithFrame:CGRectMake(0,40*KWIDTH-0.5,?IPHONE_WIDTH,?0.5)];
lineViewlight4.backgroundColor=kColor(200,200?,?200);
lineViewlight4.alpha=0.7;
[view?addSubview:lineViewlight4];
view.backgroundColor=[UIColor?whiteColor];
_nameField?= [[UITextField?alloc]initWithFrame:CGRectMake(10*KWIDTH,?0,?IPHONE_WIDTH-15*KWIDTH,?40*KWIDTH)];
_nameField.text?=?self.NameField;
_nameField.borderStyle?=?UITextBorderStyleNone;
_nameField.clearButtonMode=?UITextFieldViewModeAlways;
[[NSNotificationCenter?defaultCenter]addObserver:selfselector:@selector(textFiledEditChanged:)
name:@"UITextFieldTextDidChangeNotification"
object:_nameField];
[view?addSubview:_nameField];
[self.view?addSubview:view];
}
-(void)textFiledEditChanged:(NSNotification*)obj{
UITextField?*textField = (UITextField?*)obj.object;
//過濾掉系統表情
//? ? UITextView * textView;
//
//? ? NSRange textRange = [textView selectedRange];
//? ? [textView setText:[self disable_emoji:[textView text]]];
//? ? [textView setSelectedRange:textRange];
NSString?*toBeString = textField.text;
DSLog(@"-----toBeString? 1? ----%@",toBeString);
BOOL?isEmoj = [self?stringContainsEmoji:toBeString];
NSString?* _showStr;
toBeString = [self?disable_emoji:toBeString];
//? ? textField.text = toBeString;
DSLog(@"-----toBeString ? 2? -----%@",toBeString);
NSString?*lang = [[UITextInputMode?currentInputMode]?primaryLanguage];?//鍵盤輸入模式
if([lang?isEqualToString:@"zh-Hans"]) {?//簡體中文輸入，包括簡體拼音，健體五筆，簡體手寫
UITextRange?*selectedRange = [textField?markedTextRange];
//獲取高亮部分
UITextPosition?*position = [textFieldpositionFromPosition:selectedRange.start?offset:0];
//沒有高亮選擇的字，則對已輸入的文字進行字數統計和限制
if(!position) {
if(toBeString.length?>?kHZMaxLength) {
textField.text?= [toBeString?substringToIndex:kHZMaxLength];
_showStr = [toBeString?substringToIndex:kHZMaxLength];
}
}
//有高亮選擇的字符串，則暫不對文字進行統計和限制
else{
}
}
//中文輸入法以外的直接對其統計限制即可，不考慮其他語種情況
else{
if(toBeString.length?>?kEGMaxLength) {
textField.text= [toBeString?substringToIndex:kEGMaxLength];
_showStr = [toBeString?substringToIndex:kEGMaxLength];
}
}
DSLog(@" ? _showStr ? %@",_showStr);
if?(isEmoj) {
if?([_showStr?length]) {
textField.text?= _showStr;
}else{
textField.text?= toBeString;
}
}
}
//判斷NSString字符串是否包含emoji表情
- (BOOL)stringContainsEmoji:(NSString?*)string
{
__block?BOOL?returnValue =NO;
[string?enumerateSubstringsInRange:NSMakeRange(0, [string?length])?options:NSStringEnumerationByComposedCharacterSequences?usingBlock:^(NSString*substring,?NSRange?substringRange,?NSRange?enclosingRange,?BOOL?*stop) {
const?unichar?hs = [substring?characterAtIndex:0];
// surrogate pair
if?(0xd800) {
if?(0xd800?<= hs && hs <=?0xdbff) {
if?(substring.length?>?1) {
const?unichar?ls = [substring?characterAtIndex:1];
const?int?uc = ((hs -?0xd800) *?0x400) + (ls -?0xdc00) +0x10000;
if?(0x1d000?<= uc && uc <=?0x1f77f) {
returnValue =YES;
}
}
}else?if?(substring.length?>?1) {
const?unichar?ls = [substring?characterAtIndex:1];
if?(ls ==?0x20e3) {
returnValue =YES;
}
}else?{
// non surrogate
if?(0x2100?<= hs && hs <=?0x27ff) {
returnValue =YES;
}else?if?(0x2B05?<= hs && hs <=?0x2b07) {
returnValue =YES;
}else?if?(0x2934?<= hs && hs <=?0x2935) {
returnValue =YES;
}else?if?(0x3297?<= hs && hs <=?0x3299) {
returnValue =YES;
}else?if?(hs ==?0xa9?|| hs ==?0xae?|| hs ==?0x303d?|| hs ==0x3030?|| hs ==?0x2b55?|| hs ==?0x2b1c?|| hs ==?0x2b1b?|| hs ==?0x2b50) {
returnValue =YES;
}
}
}
}];
return?returnValue;
}
#pragma Mark ? ---??過濾表情
- (NSString?*)disable_emoji:(NSString?*)text
{
NSRegularExpression?*regex = [NSRegularExpressionregularExpressionWithPattern:@"[^u0020-u007Eu00A0-u00BEu2E80-uA4CFuF900-uFAFFuFE30-uFE4FuFF00-uFFEFu0080-u009Fu2000-u201f
]"?options:NSRegularExpressionCaseInsensitive?error:nil];
NSString?*modifiedString = [regex?stringByReplacingMatchesInString:text
options:0
range:NSMakeRange(0, [text?length])
withTemplate:@""];
return?modifiedString;
}
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