ios開發之--textview意見反饋頁面(佔位label,字數統計,提交按鈕的互動設定)

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標籤:nsrange      should   xib   back   功能   void   div   輸入   

記錄一個頁面的功能:

textview的預留位置,字數統計,提交按鈕的互動設定,具體如下:

輸入效果:

具體實現代碼如下:

1,設定代理

@interface FKViewController ()<UITextViewDelegate>

2,我是直接xib拖拽的控制項

@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裡面

self.FKTextView.delegate = self;    self.descLab.userInteractionEnabled = NO;    self.sendBtn.userInteractionEnabled = NO;    self.sendBtn.backgroundColor = [UIColor lightGrayColor];

4,具體代理方法實現

-(void)textViewDidChange:(UITextView *)textView{    self.descLab.hidden = YES;    self.sendBtn.userInteractionEnabled = YES;    self.sendBtn.backgroundColor = MainColor;    //即時顯示字數    self.stringlenghtLab.text = [NSString stringWithFormat:@"%ld/100",(long)textView.text.length];        //字數限制    if (textView.text.length >= 100) {        textView.text = [textView.text substringToIndex:100];    }        //取消按鈕點擊許可權,並顯示文字    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;}

僅做記錄!

ios開發之--textview意見反饋頁面(佔位label,字數統計,提交按鈕的互動設定)

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