我-(void)textFieldDidBeginEditing:(UITextField *)sender在我的应用程序中使用此功能.当我选择文本字段时,不会调用此方法.这是代码......
-(void)textFieldDidBeginEditing:(UITextField *)sender{
if([sender isEqual:txtName])//txtName is the IBOutlet of the UITextField
{
NSLog(@"Name");
}
else{
NSLog(@"NO_Name");
}
}
我已经实现了UIApplicationDelegate
application:didFinishLaunchingWithOptions:
和
application:handleOpenURL:
根据规范,即
application:didFinishLaunchingWithOptions:
returns YES
和
application:handleOpenURL: opens the URL.
该代码在iOS 4下运行(在两种情况下,即,当应用程序启动时以及从暂停状态变为活动状态时).但是,代码在iOS 3.2下不起作用.
我是Hadoop中的新手,尝试使用Hadoop 2.5.2在伪分布式模式下安装Hbase,版本为hbase-0.98.10.1-hadoop1-bin.我无法添加表格.
当我尝试创建表时,以下错误仍在继续:
client.HConnectionManager$HConnectionImplementation: The node /hbase is not in ZooKeeper. It should have been written by the master. Check the value configured in 'zookeeper.znode.parent'. There could be a mismatch with the one configured in the master.
它最终显示错误多次(约50次)后给出最终错误:
ERROR: The node /hbase is not in ZooKeeper. It should have been written by the master. Check the value configured in 'zookeeper.znode.parent'. There could be a mismatch with the one configured in the master.
日志文件的最新条目是:
2015-02-23 16:38:39,456 ERROR [main] master.HMasterCommandLine: Master exiting …shouldInteractWith url textview 委托未在 ios9 中调用，但我也实现了 ios9 委托方法。代码如下。如果有人知道问题解决了，请告诉我。提前感谢您的帮助
import UIKit
class UrNestTermsView: UIView {
// Outlets
@IBOutlet weak var contentView: UIView!
@IBOutlet weak var termsTextView: UITextView!
@IBOutlet weak var termsUrNestCheckBox: UrNestCheckBox!
@IBOutlet weak var subscribeUrNestCheckBox: UrNestCheckBox!
@IBOutlet weak var subscribeTextView: UITextView!
fileprivate let fontOfTerms = UIFont.systemFont(with: 10)
fileprivate let labelTextColor = UIColor(colorLiteralRed: 102/255, green: 110/255, blue: 111/255, alpha: 1)
override func awakeFromNib() {
super.awakeFromNib()
self.setUp()
}
}
extension UrNestTermsView: UITextViewDelegate {
func setUp() {
self.subscribeTextView.textColor = labelTextColor
self.subscribeTextView.font = fontOfTerms …我需要在 coredata 中同步 Web 数据库，为此我执行服务 api 调用。我正在使用Alamofire与Swift 3. 有 23 个 api 调用，在不同的 coredata 实体中提供了近 24k 行。
我的问题：这些 api 调用会阻塞 UI 一分钟，这对于用户来说等待的时间很长。
我尝试DispatchQueue在后台线程中使用并执行该任务，但没有任何效果。这就是我尝试的方法：
let dataQueue = DispatchQueue.init(label: "com.app.dataSyncQueue")
dataQueue.async {
DataSyncController().performStateSyncAPICall()
DataSyncController().performRegionSyncAPICall()
DataSyncController().performStateRegionSyncAPICall()
DataSyncController().performBuildingRegionSyncAPICall()
PriceSyncController().performBasicPriceSyncAPICall()
PriceSyncController().performHeightCostSyncAPICall()
// Apis which will be used in later screens are called in background
self.performSelector(inBackground: #selector(self.performBackgroundTask), with: nil)
}
来自 DataSyncController 的 API 调用：
func performStateSyncAPICall() -> Void {
DataSyncRequestManager.fetchStatesDataWithCompletionBlock {
success, response, error in
self.apiManager.didStatesApiComplete = true …