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anddev.org • View topic - FrameLayout in ViewSwitcher doesn't resize on switching!

FrameLayout in ViewSwitcher doesn't resize on switching!

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FrameLayout in ViewSwitcher doesn't resize on switching!

Postby D_Ponsford » Sat Nov 10, 2012 12:21 pm

Hi All, I have a problem with a FrameLayout inside a LinearLayout/ViewSwitcher which has been dogging me for days! Any help would be appreciated:

In the XML, I have a LinearLayout that defines a background theme, a ViewSwitcher inside that, and a LinearLayout in the first (upper) half of the ViewSwitcher. The upper half of the ViewSwitcher has several TextViews and a FrameLayout which places the frame in the bottom-right-hand corner of the screen. I insert a live image from the camera into that FrameLayout. So far, so good!

The 2nd half of the ViewSwitcher only has a single FrameLayout in it, in which I also insert the live camera view. I want this 2nd FrameLayout to fill the screen inside the background - but it doesn't.

The first screen and the swiping between the 2 switchable views works OK, but I can't get the single FrameLayout in the 2nd screen to fill the view (the background theme has a full-width button at the top and bottom - this displays OK). The 2nd switched view still has the small video frame in it. I've tried everything I can think of and searched what feels like every single relevant post on teh forum, but I can't get the 2nd FrameLayout to fill the screen.

I've tried putting the 2nd FrameLayout inside it's own LinearLayout, but to no avail.

If I move the single FrameLayout to the upper half of the ViewSwitcher (so that it appears first on onCreate), then I get the full-screen video image that I want, but then switching to the 2nd view gives me no video frame at all (but all the text views are there)!

Setting android:measureAllChildren="false" in the XML and switcher.setMeasureAllChildren(false); in the code makes no difference.

Here's the XML...

Code: Select all
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    style="@style/background"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >

    <ViewSwitcher
        android:id="@+id/viewswitcher"
        android:layout_width="fill_parent"
        android:layout_height="0dp"
        android:measureAllChildren="false"
        android:layout_weight="1" >

<!--
    ***************
    V I E W   O N E
    ***************
-->       
        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_marginLeft="1sp"
            android:orientation="horizontal" >

            <LinearLayout
                android:layout_width="wrap_content"
                android:layout_height="match_parent"
                android:layout_marginRight="5sp"
                android:orientation="vertical" >

                <TextView
                    android:id="@+id/txt1"
                    style="@style/normaltext"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:layout_margin="1sp"
                    android:text="@string/str1" />
....
....
                <TextView
                    android:id="@+id/txt3"
                    style="@style/normaltext"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:layout_margin="1sp"
                    android:text="@string/str2" />
            </LinearLayout>

            <LinearLayout
                android:layout_width="100dp"
                android:layout_height="wrap_content"
                android:layout_marginLeft="1sp"
                android:layout_marginRight="1sp"
                android:layout_weight="0.38"
                android:orientation="vertical" >

                <TextView
                    android:id="@+id/txt4"
                    style="@style/normaltext"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_marginTop="1sp" />
....
....

                <TextView
                    android:id="@+id/txt5"
                    style="@style/normaltext"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_marginTop="1sp"
                    android:text="@string/str3" />

                <LinearLayout
                    android:layout_width="match_parent"
                    android:layout_height="match_parent" >

                    <FrameLayout
                        android:id="@+id/camimage"
                        android:layout_width="match_parent"
                        android:layout_height="wrap_content" >
                    </FrameLayout>

                </LinearLayout>

            </LinearLayout>

        </LinearLayout>

<!--
    ***************
    V I E W   T W O
    ***************
-->
        <LinearLayout
            android:layout_width="fill_parent"
            android:layout_height="fill_parent"
            android:measureAllChildren="false"
            android:layout_weight="1" >

            <FrameLayout
                android:id="@id/camimage"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content" >
            </FrameLayout>

        </LinearLayout>

    </ViewSwitcher>

    <Button
        android:id="@+id/colour"
        style="@style/button_style"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_gravity="bottom"
        android:text="@string/ButtonDefault" />

</LinearLayout>


I'm sure it's just a case of the Switcher taking the size of the first FrameLayout instance it sees and then it's stuck with that for both views, but I can't find a way to get it to resize the FrameLayout to fill the screen on the 2nd view.

Can anybody help with this?
D_Ponsford
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Joined: Sat Nov 10, 2012 12:16 pm

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