我有一个带有自定义列表适配器的ListView。它有OnItemClickListener和OnItemLongClickListner,以前工作正常。之后,我不得不在列表项的布局中放置一个按钮,并且项目单击并且长按监听器停止工作。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,以前工作正常:
<?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上实现onItemLongClickListener但直到现在都没有成功。感谢。
答案 0 :(得分:13)
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"
到你的根元素
机器人: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.
答案 1 :(得分:0)
你在xml和listview.setLongClickable(true)中设置了android:longClickable =“true”吗?在代码?