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我正在尝试将 OnItemClickListener 添加到适用于 android 的 Coverflow 应用程序中，其中图像可以来回滚动，而我想要添加的部分是单击侦听器，因此您可以单击其中一个图像并转到另一个活动。我猜它的工作方式与将 OnItemClick 添加到列表视图或填充图像的网格视图中的方式相同。我知道这个问题之前已经被问过，但是这种情况是不同的。应用程序中有没有意义的附加代码。这是代码来自http://www.inter-fuser.com/2010/01/android-coverflow-widget.html的地方 ，这个应用程序有以下四个java类：

CoverFlow.java // 扩展 CoverAbsSpinner 并实现 GestureDetector.OnGestureListener

CoverAdapterView.java // 类扩展了 Adapter 和 ViewGroup 类

CoverAbsSpinner.java // 这个类扩展了 CoverAdapterView.java

CoverFlowExample.java // 扩展 Activity

奇怪的是我在 CoverAdapterView.java 类中找到的下面显示的代码。将看似无用的接口卡在类中间是没有意义的。它说“单击此 AdapterView 中的项目时要调用的回调方法。”

这就是方法的奥秘。你怎么“称呼”这个？他们真的准备了 OnItemClickListener 吗？我要覆盖这件事还是什么？

并且由于尚未理解此代码的原因？有谁知道这样做的目的是什么？无论如何，它是一个您必须实现或覆盖的接口。所以我质疑这样做的目的。

public interface OnItemClickListener {

    /**
     * Callback method to be invoked when an item in this AdapterView has
     * been clicked.
     * <p>
     * Implementers can call getItemAtPosition(position) if they need
     * to access the data associated with the selected item.
     *
     * @param parent The AdapterView where the click happened.
     * @param view The view within the AdapterView that was clicked (this
     *            will be a view provided by the adapter)
     * @param position The position of the view in the adapter.
     * @param id The row id of the item that was clicked.
     */
    void onItemClick(CoverAdapterView<?> parent, View view, int position, long id);


}
/**
 * Register a callback to be invoked when an item in this AdapterView has
 * been clicked.
 *
 * @param listener The callback that will be invoked.
 */
public void setOnItemClickListener(OnItemClickListener listener) {
    mOnItemClickListener = listener;
}

/**
 * @return The callback to be invoked with an item in this AdapterView has
 *         been clicked, or null id no callback has been set.
 */
public final OnItemClickListener getOnItemClickListener() {
    return mOnItemClickListener;
}

/**
 * Call the OnItemClickListener, if it is defined.
 *
 * @param view The view within the AdapterView that was clicked.
 * @param position The position of the view in the adapter.
 * @param id The row id of the item that was clicked.
 * @return True if there was an assigned OnItemClickListener that was
 *         called, false otherwise is returned.
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1 回答 1

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嗨，对于coverflow click listner，请尝试使用它。

coverFlow.setOnItemClickListener(new OnItemClickListener() 
{
    public void onItemClick(AdapterView<?> parent, View view, int position, long id) 
    {
        switch(position) 
        {
            case 0:
                startActivity(new Intent(****.this,@@@@.class));
                finish();
                break;
            case 1:
                startActivity(new Intent(****.this, ####.class));
                finish();
                break;
            case 2:
                startActivity(new Intent(****.this, &&&&.class));
                finish();
                break;

        }
    }
});
于 2012-09-14T05:21:59.783 回答