小编Mat*_*ica的帖子

我有这个items.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="horizontal" android:layout_width="match_parent"
android:focusable="true"
android:clickable="true"
android:background="?android:attr/selectableItemBackground"
android:layout_height="wrap_content">

<ImageView
    android:layout_width="match_parent"
    android:layout_height="60dp"
    android:id="@+id/colorPreview" />


<TextView
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_centerInParent="true"
    android:textAppearance="@android:style/TextAppearance.Large"
    android:textColor="@android:color/white"
    android:id="@+id/colorName" />

</RelativeLayout>

当我单独使用它时,selectableItemBackground在我单击视图时动画.但是当我将它用于RecyclerView中的项目时,对点击的影响不再发生.我怎样才能解决这个问题？

PS:这是RecyclerView上的监听器,如果它是相关的:

 public ColorListOnItemTouchListener(Context context, OnItemClickListener clickListener) {
    mClickListener = clickListener;
    mGestureDetector = new GestureDetector(context, new GestureDetector.SimpleOnGestureListener() {
        @Override
        public boolean onDown(MotionEvent e) {
            return true;
        }

        @Override
        public void onLongPress(MotionEvent e) {
                if(childView != null && mClickListener != null) {
                    mClickListener.onItemLongPress(childView, index);
                }
        }

        @Override
        public boolean onSingleTapUp(MotionEvent e) {
            if(childView != null …

我需要将一个变量从AppDelegate传递给另一个我创建的类来保存项目的全局变量,我无法找到使其工作的方法.

这是AppDelegate中的代码:

func application(application: UIApplication!, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: NSData!) {
    println("Device's token is: \(deviceToken)")

    //Global Variables Class Instance
    let globals:Globals = Globals()

    globals.setDeviceToken("test1") //method1 not working
    globals.deviceToken = "test2"   //method2 not working
}

这是我的Globals类:

public class Globals {
    var deviceToken = String()

    init() {
        //nothing
    }

    func setDeviceToken(s:String){
        deviceToken = s
    }

    func getDeviceToken() -> String {
        return deviceToken
    }
}

如果我尝试从项目的其他文件打印值,我将无法获得任何内容,只是一个空字符串.

class ViewController: UIViewController {

    //Global Variables Class Instance
    let globals:Globals = Globals()

    override func viewDidLoad() {
        println(globals.getDeviceToken())  //return empty …