昨天用了下線程
m_alarmCount = 0;
[_alarmTableView reloadData];
_alarmActivity.hidden = NO;
_alarmStateLabel.hidden = NO;
[_alarmActivity startAnimating];
self.alarmStateLabel.text = [NSString stringWithFormat:@"獲取狀態(tài)中..."];
dispatch_async(dispatch_get_global_queue(0, 0), ^{
int i = 0;
i = [m_logic getAlarmOutCount:m_StatusResult.devID count:&m_alarmCount];
i = [m_logic getAlarmOut:m_StatusResult.devID state:&m_alarmState];
dispatch_async(dispatch_get_main_queue(), ^{
if (m_alarmCount == 0) {
self.alarmStateLabel.text = [NSString stringWithFormat:@"該設備無報警輸出通道"];
}
if (i != 0) {
self.alarmStateLabel.text = [NSString stringWithFormat:@"獲取報警通道失敗"];
}
if (i == 0 && m_alarmCount > 0) {
_alarmStateLabel.hidden = YES;
}
[_alarmActivity stopAnimating];
_alarmActivity.hidden = YES;
[_alarmTableView reloadData];
});
});
最開始把label放入全局異步中，發(fā)現(xiàn)無法進行UI更新，需拿出來才可，開發(fā)時需牢記：UI的更新只能寫在主線程中，否則無法更新
