首先定义
@property(nonatomic,strong)NSMutableArray * dataArray;
@property (nonatomic, assign) BOOL isScrollBottom;
为了模拟实时加载的数据，我们写一个定时加载数据效果，间隔1s
NSTimer* timer = [NSTimer timerWithTimeInterval:1.0 target:self selector:@selector(timerAction:) userInfo:nil repeats:YES];
[[NSRunLoop mainRunLoop] addTimer:timer forMode:NSDefaultRunLoopMode];
- (void)timerAction:(NSTimer*)timer {
NSString*str = [NSStringstringWithFormat:@"%ld个大美女",(long)i];
[self.dataArrayaddObject:str];
i++;
[self.textTabView reloadData];
}
在ViewDidAppear中
self.isScrollBottom = NO;
在number中
if (self.isScrollBottom) {
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0.005 *NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
if(self.dataArray.count>0) {
NSIndexPath *indexPath = [NSIndexPath indexPathForRow:([self.textTabView numberOfRowsInSection:0]-1) inSection:0];
[self.textTabView scrollToRowAtIndexPath:indexPath atScrollPosition:UITableViewScrollPositionBottom animated:NO];
}
});
}
在代理方法willDidplayCell：forRowAtIndexPath 中写入
if (self.isScrollBottom == NO) {
[self.textTabView scrollToRowAtIndexPath:[NSIndexPath indexPathForRow:self.dataArray.count - 1 inSection:0] atScrollPosition:UITableViewScrollPositionBottom animated:YES];
if(indexPath.row==self.dataArray.count-1) {
self.isScrollBottom=YES;
}
}
当然，cellForRowAtIndexPath代理方法中赋值还是需要的
static NSString *cellId = @"BOTextCell";
BOTextCell *Cell = [tableView dequeueReusableCellWithIdentifier:cellId];
if(Cell ==nil) {
Cell = [[[NSBundle mainBundle]loadNibNamed:@"BOTextCell" owner:self options:nil]lastObject];
}
Cell.titleLab.text=self.dataArray[indexPath.row];
后面我们就可以得到想要的效果了
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