UITableView - iOS顶级背景中的图像

Question

我可以将图像设置为我的TableView背景，但图像位于视图的中心 如何将图像设置为顶部？

我正在使用staticTableView

private WebSocket mConnection;

private WebSocketConnectCallback mSocketCallback = new WebSocketConnectCallback() {
    @Override
    public void onCompleted(Exception ex, WebSocket webSocket) {
    ...
            webSocket.setClosedCallback(new CompletedCallback() {
            @Override
            public void onCompleted(Exception ex) {
                Log.d("websocket", "WebSocket closed");
                if (ex != null && ex.getMessage() != null) {
                    Log.e("websocket", "WebSocket closed exception: " + ex.getMessage());
                }
                disconnect();
            }
        });
    }
};

private void disconnect() {
    mPingHandler.removeCallbacks(pingRunnable);
    if (mConnection != null) {
        mConnection.close();
        mConnection = null;
    }
}

Answer 1

如果您使用静态表并且没有机会更改它，您可能需要采取这样的方法：

override func viewDidLoad() {
    super.viewDidLoad()

    //Create the UIImage
    let image = UIImage(named: "testing")

    //Create a container view that will take all of the tableView space and contain the imageView on top
    let containerView = UIView(frame: CGRect(x: 0.0, y: 0.0, width: self.view.bounds.width, height: self.view.bounds.height))

    //Create the UIImageView that will be on top of our table
    let imageView = UIImageView(frame: CGRect(x: 0.0, y: 0.0, width: self.view.bounds.width, height: image!.size.height))

    //Set the image
    imageView.image = image

    //Clips to bounds so the image doesnt go over the image size
    imageView.clipsToBounds = true

    //Scale aspect fill so the image doesn't break the aspect ratio to fill in the header (it will zoom)
    imageView.contentMode = UIViewContentMode.ScaleAspectFit

    containerView.addSubview(imageView)

    self.tableView.backgroundView = containerView
}

根据需要使单元格或标题透明。我不知道您的UI应该如何工作。此方法不会滚动imageView，但您可以在scrollView委托方法中执行此操作。如果你需要滚动我会告诉我，我会帮你解决