clicking on the fragment invokes activity behind it

问题

Im guessing its something really simple, maybe a setting in listview or fragment. But I couldnt find solution for it for couple of hours now. So.. I have a listView like this

<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/content"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:isScrollContainer="true">

<ListView 
    android:id="@+id/list"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:background="#fffafa"
    />

</RelativeLayout>

when someone clicks on the list item. I replace it with a fragment like this

    FragmentManager manager = getSupportFragmentManager();
    FragmentTransaction ft = manager.beginTransaction();
    ft.replace(R.id.content, newFragment);

    ft.addToBackStack(null);
    ft.commit();

If I click on the item on the List, The whole list is replaced with a fragment(*) consisting of a Button and and couple of text fields. The Fragment replaces the listView properly with information about the item. When I press back it does properly bring the list view back.

The problem is that if i click on the background of the * it behaves as if I would click on the list that is behind it.. and brings fragment about that item to the front. I can click endlessly on background to bring other fragments. I can dig back to list by clicking back,back..

Why this fragment is transparent? how can i fix this?

回答1:

I believe the issue is that the replace method doesn't replace the ListView. It only replaces other fragments that are within the container. In this specific case there are none. Thus, you're essentially adding your fragment on top of the ListView because the RelativeLayout allows views to be on top of one another. When you click on the fragment, you're not fully handling it, so it goes through to the base view which is the ListView.

A simple, quick, and dirty solution would be to retrieve the ListView object and either remove it from the container yourself or set it's visibility to GONE. A better solution would be to use ListFragment which should show the expected results.

回答2:

I solved a similar problem by adding android:clickable="true" in the element that was behaving as if it was "transparent". Making it clickable made sure the click events were handled by it instead of passed to the views bellow.

回答3:

So, I had exactly the same issue, I still don't know the reason why, but make sure your adding the android:clickable="true" to the roovView of your 2nd fragment's layout.

something like this:

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#ffffff"
android:clickable="true"
android:orientation="vertical">
.....any content for your item (2nd fragment).....
</LinearLayout>

回答4:

Set the clickable property to true so that the click event gets consumed only on the foreground fragment.

    <FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
            android:layout_width="fill_parent"
            android:layout_height="fill_parent"
            android:clickable="true" />

来源：https://stackoverflow.com/questions/9190855/clicking-on-the-fragment-invokes-activity-behind-it