当按钮在列表中时，ListView长按不起作用

Question

我有一个带有自定义列表适配器的ListView。它有OnItemClickListener和OnItemLongClickListner，它们过去工作得很好。之后，我不得不在列表项的布局中放置一个按钮，项目点击和长点击监听器停止工作。这是我的示例代码：

ListView lv=(ListView)findViewbyId(R.id.listview); 
lv.setAdapter(listviewadapter);
lv.setOnItemLongClickListener(new OnItemLongClickListener() {
@Override
public boolean onItemLongClick(AdapterView<?> parent, View view,int position, long id) {
// My code
}
});

在列表项的布局中添加按钮之前，这通常工作得很好：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal" 
android:padding="2dp"
>
<TextView
android:id="@+id/symbol_name"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="2.5"
android:layout_gravity="left"
/>
<TextView
android:id="@+id/ltp"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_gravity="right"
android:layout_weight="1"
/>
<TextView
android:id="@+id/change_in_perc"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_gravity="right"
android:layout_weight="1"
/>
<TextView
android:id="@+id/volume"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_gravity="right"
android:layout_weight="1"
/>
<ImageButton
android:id="@+id/chart"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_gravity="right"
android:layout_weight="0.5"
android:src="@drawable/charts"
android:contentDescription="Chart Link"
/>
</LinearLayout>

我尝试将内联侦听器更改为在活动中实现onItemLongClickListener，但到目前为止没有成功。谢谢

Answer 1

当您单击列表项时，您的图像按钮可能会聚焦。

所以添加这个

android:descendantFocusability="blocksDescendants" 

到您的根元素

http://developer.android.com/reference/android/view/ViewGroup.html#attr_android:descendantFocusability

android:descendantFocusability

Defines the relationship between the ViewGroup and its descendants when looking for a View to take focus.
Must be one of the following constant values.
Constant    Value   Description
beforeDescendants   0    The ViewGroup will get focus before any of its descendants.
afterDescendants    1    The ViewGroup will get focus only if none of its descendants want it.
blocksDescendants   2    The ViewGroup will block its descendants from receiving focus.
This corresponds to the global attribute resource symbol descendantFocusability.

Answer 2

您是否在xml和listview.setLongClickable(true)中设置了android:longClickable="true"；代码中？