一行代码搞定textView的占位符、字数限制、行数限制
如何使用? 第一步 把YLTextView文件夹拖入你的项目
#import "UITextView+YLTextView.h"
第二步
self.view.backgroundColor = [UIColor lightGrayColor];
UITextView *textView = [[UITextView alloc] init];
textView.frame = CGRectMake(0, 0, 203, 120);
textView.center = self.view.center;
textView.font = [UIFont systemFontOfSize:17];
// textView.text = @"我是一段文字,很长很长真的很长";
textView.placeholder = @"我是一个占位符";
textView.limitLength = @10;
textView.placeholdColor = [UIColor redColor];
textView.limitPlaceColor = [UIColor redColor];
textView.placeholdFont = [UIFont systemFontOfSize:17];
textView.limitPlaceFont = [UIFont systemFontOfSize:17];
// textView.autoHeight = @1;
// textView.limitLines = @4;//行数限制优先级低于字数限制
textView.infoBlock = ^(NSString *text, CGSize textViewSize) {
NSLog(@"当前文字: %@ 当前高度:%lf",text,textViewSize.height);
};
[self.view addSubview:textView];
备注: 如果你发现placeholder的位置出现在中间了,那么你加入下面代吗即可
if (@available(iOS 11.0, *)) {
self.tableView.contentInsetAdjustmentBehavior = UIScrollViewContentInsetAdjustmentNever;
} else {
self.automaticallyAdjustsScrollViewInsets = NO;
}
下载后找到上面文件夹,打开运行项目。
let textview = UITextView(frame: CGRect(x: 100, y: 100, width: 200, height: 150))
// textview.text = "如果你想对textView.text直接赋值。请在设置属性之前进行,否则影响计算"
textview.placeholder = "喜欢请Star"
textview.limitLength = 20
textview.placeholdColor = .red
textview.limitLabelColor = .red
textview.placeholdFont = UIFont.boldSystemFont(ofSize: 17)
textview.limitLabelFont = UIFont.boldSystemFont(ofSize: 17)
// textview.limitLines = 4;
textview.center = self.view.center
view.addSubview(textview)
效果