我想对隐藏API密钥和秘密密钥的最佳方法有您的看法。
我发现了两种方法:
我知道风险0不存在,但是最安全的解决方案是什么?
预先感谢
我想在我的 UICollectionView 中重新排列我的单元格。但是当我放下我的项目时,会调用“cellForItemAt”方法,这将导致单元格闪烁(见下图)。
我应该怎么做才能避免这种行为?
预先感谢您的帮助。
class ViewController: UIViewController {
@IBOutlet weak var collectionView: UICollectionView!
private let cellIdentifier = "cell"
private let cells = [""]
private var longPressGesture: UILongPressGestureRecognizer!
override func viewDidLoad() {
super.viewDidLoad()
longPressGesture = UILongPressGestureRecognizer(target: self, action: #selector(self.handleLongGesture(gesture:)))
collectionView.addGestureRecognizer(longPressGesture)
}
//Selectors
@objc func handleLongGesture(gesture: UILongPressGestureRecognizer) {
switch(gesture.state) {
case .began:
guard let selectedIndexPath = collectionView.indexPathForItem(at: gesture.location(in: collectionView)) else {
break
}
collectionView.beginInteractiveMovementForItem(at: selectedIndexPath)
case .changed:
collectionView.updateInteractiveMovementTargetPosition(gesture.location(in: gesture.view!))
case .ended:
collectionView.endInteractiveMovement()
default:
collectionView.cancelInteractiveMovement()
}
}
}
// MARK: - UICollectionViewDataSource …
Run Code Online (Sandbox Code Playgroud) 我想在我的应用程序中使用新的设计支持库,从API 21开始.我想使用Theme.Material样式,但它仅适用于Theme.AppCompat样式.当我使用Theme.Material时,android会返回此错误:
错误膨胀类android.support.design.widget.textinputlayout"
我该如何解决?
先感谢您
Ps:抱歉我的英语不好,我是法国人.
更新: 这是我的代码
styles.xml
<style name="AppTheme" parent="android:Theme.Material.Light.DarkActionBar">
<item name="android:colorPrimary">@color/primary</item>
<item name="android:colorPrimaryDark">@color/primary_dark</item>
<item name="android:colorAccent">@color/accent</item>
<item name="android:colorControlNormal">@color/control_normal</item>
<item name="android:textColorHint">@color/silver</item>
</style>
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activity.xml
<android.support.design.widget.TextInputLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="username"
android:id="@+id/editText1" />
</android.support.design.widget.TextInputLayout>
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的build.gradle
dependencies {
//compile fileTree(dir: 'libs', include: ['*.jar'])
compile project(':facebook')
compile('com.twitter.sdk.android:twitter:1.1.0@aar') {
transitive = true;
exclude module: 'gson'
}
compile 'com.google.android.gms:play-services-plus:7.5.0'
compile 'com.google.android.gms:play-services-identity:7.5.0'
compile 'com.android.support:design:22.2.0'
compile 'com.android.support:support-v13:22.0.0'
compile 'com.android.support:cardview-v7:22.0.0'
compile 'com.soundcloud.android:android-crop:0.9.10@aar'
compile files('libs/volley.jar')
compile files('libs/gson-2.3.1.jar')
compile files('libs/httpclient-4.3.3.jar')
compile files('libs/httpclient-cache-4.3.3.jar')
compile files('libs/httpcore-4.3.2.jar')
compile files('libs/httpmime-4.3.3.jar')
compile files('libs/commons-lang3-3.3.2.jar')
compile …
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我想显示一个新的ViewController,但是当显示AlertController时它不起作用.(我不想使用现有的segue,只能在swift中使用).有人可以帮帮我吗?这只是一个简单的例子,在我的应用程序中我使用了一个显示加载器的自定义AlertController.因此,我不希望在单击警报按钮后重定向
提前致谢
Ps:抱歉我的英语不好.
@IBAction func testButtonClick(_ sender: AnyObject) {
let alert = UIAlertController(title: nil, message: "test", preferredStyle: UIAlertControllerStyle.alert)
self.present(alert, animated: true, completion: nil)
logout()
}
func logout() {
let storyboardName = "Authentication"
let storyboard = UIStoryboard(name: storyboardName, bundle: nil)
if let newVC = storyboard.instantiateInitialViewController() {
newVC.modalPresentationStyle = UIModalPresentationStyle.fullScreen
self.present(newVC, animated: true)
} else {
print("Unable to instantiate VC from \(storyboardName) storyboard")
}
}
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