投机取巧

1、更改textField的clearButton样式

UIButton *clearButton = [_nameTextField valueForKey:@"_clearButton"];

[clearButton setImage:[UIImage imageNamed:@"emotionstore_progresscancelbtn.png"] forState:UIControlStateNormal];

2、更改textField的placehoder的字体颜色

[textField setValue:[UIColor redColor] forKeyPath:@"_placeholderLabel.textColor"];

3、延迟执行

dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0.5 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{

});

4、获取每个tableViewCell中的按钮点击

- (void)clickButton:(UIButton *)button event:(id)event {

NSSet *touches = [event allTouches];

UITouch *touch = [touches anyObject];

CGPoint currentTouchPosition = [touch locationInView:self.tableView];

NSIndexPath *indexPath = [self.tableView indexPathForRowAtPoint:currentTouchPosition];

if (indexPath != nil) {

}

}

5、更改字符串属性和字体

NSString *string = @"123ABC456";

NSMutableAttributedString *attributedString = [[NSMutableAttributedString alloc] initWithString:string];

[attributedString addAttribute:NSForegroundColorAttributeName value:[UIColor redColor] range:NSMakeRange:(3,3)];//更改 ABC 字符颜色为红色

[attributedString addAttribute:NSFontAttributeName value:[UIFont boldSystemFontOfSize:15] range:NSMakeRange:(6,3)];//更改 456 字符字体大小为15号字体

6、更改 tableView 分割线颜色和长度

if ([self.tableView respondsToSelector:@selector(setSeparatorInset:)]) {

[self.tableView setSeparatorInset:UIEdgeInsetsMake(0, 20, 0, 20)];

[self.tableView setSeparatorColor:[UIColor colorWithRed:0.89f green:0.89f blue:0.89f alpha:1.00f]];

}

if ([self.tableView respondsToSelector:@selector(setLayoutMargins:)]) {

[self.tableView setLayoutMargins:UIEdgeInsetsMake(0, 20, 0, 20)];

[self.tableView setSeparatorColor:[UIColor colorWithRed:0.89f green:0.89f blue:0.89f alpha:1.00f]];

}

- (void)tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath

{

if ([cell respondsToSelector:@selector(setSeparatorInset:)]) {

[self.tableView setSeparatorInset:UIEdgeInsetsMake(0, 20, 0, 20)];

[self.tableView setSeparatorColor:[UIColor colorWithRed:0.89f green:0.89f blue:0.89f alpha:1.00f]];

}

if ([cell respondsToSelector:@selector(setLayoutMargins:)]) {

[self.tableView setLayoutMargins:UIEdgeInsetsMake(0, 20, 0, 20)];

[self.tableView setSeparatorColor:[UIColor colorWithRed:0.89f green:0.89f blue:0.89f alpha:1.00f]];

}

}