也是收藏的別的大神分享的

1、項目源碼/Demo分享：項目源碼

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2、iOS的Touch ID驗證：touch驗證

3、設置textField的placeHolds的字體顏色：[pwdTextFieldsetValue:[UIColor lightGrayColor]forKeyPath:@"_placeholderLabel.textColor"];

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4、設置textField的placeHolds的字體大?。篬pwdTextFieldsetValue:[UIFont boldSystemFontOfSize:15]forKeyPath:@"_placeholderLabel.font"];

5、設置textFiled的左視圖 占位符 ……的間距；

//控制左視圖位置

- (CGRect)leftViewRectForBounds:(CGRect)bounds

{

? ? CGRecticonRect = [superleftViewRectForBounds:bounds];

? ? iconRect.origin.x+=8;

? ? ?//右偏8

? ? ?returniconRect;

}

//控制placeHolder的位置，左右縮40

-(CGRect)placeholderRectForBounds:(CGRect)bounds

{

? ? ? CGRect inset =CGRectMake(bounds.origin.x+40, bounds.origin.y+2, ? ? ? ? ? ? ? ? ? bounds.size.width-10, bounds.size.height);

? ? ? return inset;

}

//控制顯示文本的位置

-(CGRect)textRectForBounds:(CGRect)bounds

{

? ? ? CGRect inset =CGRectMake(bounds.origin.x+40, bounds.origin.y+2, ? ? ? ? ? ? ? ? bounds.size.width-10, bounds.size.height);

? ? ? return inset;

}

//控制編輯文本的位置

-(CGRect)editingRectForBounds:(CGRect)bounds

{

? ? CGRect inset =CGRectMake(bounds.origin.x+40, bounds.origin.y+2, ? ? ? ? ? ? ? ? bounds.size.width-10, bounds.size.height);

? ?return inset;

}

//控制清除按鈕的位置

-(CGRect)clearButtonRectForBounds:(CGRect)bounds

{

returnCGRectMake(bounds.origin.x+ bounds.size.width-50, bounds.origin.y+ bounds.size.height-20,16,16);

}