标签:nsrange 效果图 should xib back 功能 void div 输入
记录一个页面的功能:
textview的占位符,字数统计,提交按钮的交互设置,具体效果图如下:
输入效果:
具体实现代码如下:
1,设置代理
@interface FKViewController ()<UITextViewDelegate>
2,我是直接xib拖拽的控件
@property (weak, nonatomic) IBOutlet UITextView *FKTextView; @property (weak, nonatomic) IBOutlet UILabel *descLab; @property (weak, nonatomic) IBOutlet UIButton *sendBtn; @property (weak, nonatomic) IBOutlet UILabel *stringlenghtLab;
3,viewDidLoad里面
self.FKTextView.delegate = self; self.descLab.userInteractionEnabled = NO; self.sendBtn.userInteractionEnabled = NO; self.sendBtn.backgroundColor = [UIColor lightGrayColor];
4,具体代理方法实现
-(void)textViewDidChange:(UITextView *)textView { self.descLab.hidden = YES; self.sendBtn.userInteractionEnabled = YES; self.sendBtn.backgroundColor = MainColor; //实时显示字数 self.stringlenghtLab.text = [NSString stringWithFormat:@"%ld/100",(long)textView.text.length]; //字数限制 if (textView.text.length >= 100) { textView.text = [textView.text substringToIndex:100]; } //取消按钮点击权限,并显示文字 if (textView.text.length == 0) { self.descLab.hidden = NO; self.sendBtn.userInteractionEnabled = NO; self.sendBtn.backgroundColor = [UIColor lightGrayColor]; } } -(BOOL)textView:(UITextView *)textView shouldChangeTextInRange:(NSRange)range replacementText:(NSString *)text { if ([text isEqualToString:@"\n"]) { [self.FKTextView resignFirstResponder]; return NO; } return YES; }
仅做记录!
ios开发之--textview意见反馈页面(占位label,字数统计,提交按钮的交互设置)
标签:nsrange 效果图 should xib back 功能 void div 输入
原文地址:http://www.cnblogs.com/hero11223/p/8006741.html