0oneo

UIImage *image = [UIImage imageNamed:@"name.png"];
view.layer.contents = (id) image.CGImage;
    // 如果需要背景透明加上下面这句
view.layer.backgroundColor = [UIColor clearColor].CGColor;

0oneo

// test code that generate the error
for (int i = 0; i < 1000; i++) {
    NSDate *date= [NSDate date];
    NSString *queueName = [NSString stringWithFormat:@"queue%i", i];
    dispatch_queue_t testqueue = dispatch_queue_create([queueName cStringUsingEncoding:NSUTF8StringEncoding], NULL);
    dispatch_async(testqueue, ^{
        NSDateFormatter *ndf = [BXAppDelegate dateFormatter];
        DDLogInfo(@"%@", [ndf stringFromDate:date]);
    });
}

0oneo

// pls check http://t.cn/z8ncg24
[CATransaction begin];
[CATransaction setCompletionBlock:^{
    [weakself.tableView reloadData];
}];
[weakself.tableView beginUpdates];
[weakself.tableView deleteSections:indexSet withRowAnimation:UITableViewRowAnimationFade];
[weakself.tableView endUpdates];

[CATransaction commit];

0oneo

NSArray *images = @[@"http://example.com/image1.png",
                 @"http://example.com/image2.png",
                 @"http://example.com/image3.png",
                 @"http://example.com/image4.png"];
 
dispatch_queue_t imageQueue = dispatch_queue_create("Image Queue",NULL);
 
for (NSString *urlString in images) {
    dispatch_async(imageQueue, ^{