In an Android project, I have an Activity that contains (from top to bottom) a header, a RecyclerView and a RelativeLayout.
Code sample :
<android.support.design.widget.CoordinatorLayout ...>
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
...
</android.support.design.widget.AppBarLayout>
<android.support.v7.widget.RecyclerView
android:layout_width="match_parent"
android:layout_height="match_parent" />
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content" >
...
</RelativeLayout>
</android.support.design.widget.CoordinatorLayout>
This is the behaviour I want : the RelativeLayout is "folded" by default, i.e. under the RecyclerView. When the user swipes up, the RelativeLayout expands to use the whole screen, and folded again when swipes down.
What is the right way to do it ? As I want the RelativeLayout to be BELOW the RecyclerView when folded, and OVER it when expanded. I tried setting the dependencies between elements dynamically but couldn't manage to do so.
Thanks for any help or advice on how to organize the activity to get such a behaviour.
EDIT
This is the XML structure :
<CoordinatorLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
</AppBarLayout>
<RecyclerView
android:id="#+id/top_list"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="#id/app_bar"
android:layout_above="#+id/relativelayout_footer" />
<RelativeLayout
android:layout_height="wrap_content"
android:layout_width="match_parent"
android:layout_alignParentBottom="true">
<TextView ...>
<RecyclerView
android:id="#+id/included_list"
android:layout_height="match_parent"
android:layout_width="match_parent"
android:visibility="gone"/>
</RelativeLayout>
</RelativeLayout>
</CoordinatorLayout>
And the listener :
top_list.setVisibility(playlistOpened ? View.VISIBLE : View.GONE);
app_bar.setVisibility(playlistOpened ? View.VISIBLE : View.GONE);
included_list.setVisibility(playlistOpened ? View.GONE : View.VISIBLE);
Transition cb = new ChangeBounds();
cb.setDuration(1000);
TransitionManager.beginDelayedTransition(slider, cb);
playlistOpened = ! playlistOpened;
As you see, I switch the visibility of the elements in order to reorganise the view. When the included_list is set to VISIBLE, it pushes up the TextView.
The only problem is that the top_list and the app_bar disappear before being covered by the RelativeLayout. I tried adding a Listener to the Transition and do these when the transition ends, but it doesn't work (I guess because they're not set to GONE at the beginning, so the RelativeLayout can't move up). Any idea of how to do so ? Maybe I should open another question for it ?
Okay, a final attempt. I am back to RelativeLayout and added another one around the RecyclerView to fix its scrolling problem. However, transitions get tricky (and the listener complicated) then. In order to prevent the RecyclerView from popping away before the RelativeLayout with the TextView inside fully covers the latter, I had to include a fading transition to the RecyclerView, too. Hope this suits you.
XML:
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
</android.support.design.widget.AppBarLayout>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<RelativeLayout
android:id="#+id/rlwithrecyclerview"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_above="#+id/rlwithtextview"
android:layout_alignParentTop="true">
<android.support.v7.widget.RecyclerView
android:id="#+id/recyclerview"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</RelativeLayout>
<RelativeLayout
android:id="#+id/rlwithtextview"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true">
<TextView
android:layout_width="match_parent"
android:layout_height="400dp"
android:id="#+id/textview"
android:text="Just a test" />
</RelativeLayout>
</RelativeLayout>
</android.support.design.widget.CoordinatorLayout>
onClick():
#Override
public void onClick(View v) {
RelativeLayout rlWithRecyclerView = findViewById(R.id.rlwithrecyclerview);
RelativeLayout.LayoutParams layoutParamsRlWithRecyclerView;
RelativeLayout rlWithTextView = findViewById(R.id.rlwithtextview);
RelativeLayout.LayoutParams layoutParamsRlWithTextView;
if (rlWithTextView.getLayoutParams().height == MATCH_PARENT) {
layoutParamsRlWithTextView = new RelativeLayout.LayoutParams(MATCH_PARENT, WRAP_CONTENT);
layoutParamsRlWithRecyclerView = new RelativeLayout.LayoutParams(MATCH_PARENT, WRAP_CONTENT);
layoutParamsRlWithRecyclerView.addRule(RelativeLayout.ALIGN_PARENT_TOP);
layoutParamsRlWithRecyclerView.addRule(RelativeLayout.ABOVE, R.id.rlwithtextview);
} else {
layoutParamsRlWithRecyclerView = new RelativeLayout.LayoutParams(MATCH_PARENT, 0);
layoutParamsRlWithTextView = new RelativeLayout.LayoutParams(MATCH_PARENT, MATCH_PARENT);
}
layoutParamsRlWithTextView.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM);
Transition changeBounds = new AutoTransition();
changeBounds.setDuration(500);
TransitionManager.beginDelayedTransition(rlWithRecyclerView, changeBounds);
TransitionManager.beginDelayedTransition(rlWithTextView, changeBounds);
rlWithRecyclerView.setLayoutParams(layoutParamsRlWithRecyclerView);
rlWithTextView.setLayoutParams(layoutParamsRlWithTextView);
}
Although I got credit for the two other answers, I will eventually delete them, since they don't solve the problem.
Related
I have such kind of fragment layout.
<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/colorBackgroundBlack">
<MyCustomView
android:id="#+id/vBottomSlider"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_behavior="android.support.design.widget.BottomSheetBehavior" />
</android.support.design.widget.CoordinatorLayout>
For my vBottomSlider I create a BottomSheetBehavior instance:
val bh = BottomSheetBehavior.from(vBottomSlider)
bh.isHideable = false
bh.peekHeight = 50.dpToPx
bh.setBottomSheetCallback(mBottomCallback)
That's all inside the fragment.
My main activity layout looks like:
<android.support.constraint.ConstraintLayout
android:id="#+id/vMainConstraint"
android:layout_width="match_parent"
android:layout_height="match_parent">
<FrameLayout
android:id="#+id/fContent"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<com.aurelhubert.ahbottomnavigation.AHBottomNavigation
android:id="#+id/vNavigation"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_constraintBottom_toBottomOf="parent" />
</android.support.constraint.ConstraintLayout>
For my fContent i set bottom padding as vNavigation height. When i scroll down my vBottomSlider, i hide vNavigation by changing its translationY, and set padding for my fContent (by taking onSlide event from BottomSheetBehavior.BottomSheetCallback).
Sliding with finger completely, works fine.
But when i fling or set EXPANDED or COLLAPSED state programmatically for my BottomSheetBehavior instance its not get scrolled completely. Here is always some space (it seems to be height of my vNavigation).
I've managed to resolve this by editing the source of BottomSheetBehavior.
My solution is little hacky. Send e-mail if you need edited class.
ok im already doing (i believe) everything i need to do to make my applications layout scroll/move up when the soft keyboard is shown but it is not working so im guessing there must be something im doing stopping it, i wonder if its the fixed heights im giving my viewpagers or something im unaware of, ive read through posts that describe relative layouts as 'crushing child views' when the keyboard is shown and linear layouts not crushing child views, so with that in mind here are my layouts
MAIN_ACTIVITY
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
android:id="#+id/viewpagerHolder">
<android.support.v4.view.ViewPager
android:id="#+id/viewpager2"
android:layout_width="match_parent"
android:layout_marginLeft="8dp"
android:layout_marginRight="8dp"
android:layout_marginTop="8dp"
android:layout_height="#dimen/card_pager_height" />
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/predictsHolder"
android:layout_below="#id/viewpager2">
<android.support.v4.view.ViewPager
android:id="#+id/viewpager_predicts"
android:layout_width="wrap_content"
android:layout_marginLeft="8dp"
android:layout_marginRight="8dp"
android:layout_marginTop="4dp"
android:layout_height="#dimen/predicts_pager_height" />
</RelativeLayout>
<android.support.design.widget.TabLayout
android:id="#+id/tabs"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#id/predictsHolder"
app:tabGravity="fill"
android:theme="#style/CustomTabLayoutStyle" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#id/tabs">
<android.support.v4.view.ViewPager
android:id="#+id/viewpager"
android:background="#color/windowBackground"
android:layout_width="match_parent"
android:layout_height="wrap_content"
/>
</LinearLayout>
</RelativeLayout>
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize" />
</android.support.design.widget.AppBarLayout>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginTop="#dimen/card_pager_height">
<android.support.design.widget.FloatingActionButton
android:id="#+id/fab2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginRight="12dp"
android:layout_marginEnd="12dp"
app:elevation="4dp"
android:src="#drawable/ic_playlist_play_white_24dp"
android:layout_gravity="right|top"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true"/>
</RelativeLayout>
</android.support.design.widget.CoordinatorLayout>
There a total of 3 viewpagers each has a different layout the first (top most)
FIRST VIEWPAGER
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#drawable/border"
android:paddingLeft="2dp"
android:paddingRight="2dp"
tools:context=".SpeakGridDB">
<android.support.v7.widget.RecyclerView
android:id="#+id/card_speak_grid"
android:layout_width="match_parent"
android:layout_gravity="center"
android:layout_height="wrap_content"/>
</RelativeLayout>
SECOND VIEWPAGER
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="5dp"
android:paddingLeft="2dp"
android:paddingRight="2dp"
android:background="#drawable/border">
<android.support.v7.widget.RecyclerView
android:id="#+id/predicts_card_speak_grid"
android:layout_width="match_parent"
android:layout_gravity="center"
android:layout_height="wrap_content"/>
</RelativeLayout>
THIRD VIEWPAGER
i would like this layout to still be present when the keyboard pops up its currently the bottom of the layout ive put it in a linear layout and also tried putting its viewpager in a linear layout
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:background="#color/windowBackground"
tools:context=".OneFragment">
<android.support.v4.widget.SwipeRefreshLayout
android:id="#+id/activity_main_swipe_refresh_layout"
android:layout_width="match_parent"
android:background="#color/windowBackground"
android:layout_height="wrap_content">
<android.support.v7.widget.RecyclerView
android:id="#+id/card_grid"
android:background="#color/windowBackground"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:clipToPadding="false"/>
</android.support.v4.widget.SwipeRefreshLayout>
</LinearLayout>
I'm also using
android:windowSoftInputMode="adjustResize"
in my manifest and have also tried
android:windowSoftInputMode="adjustPan"
but no joy it seems like the tabLayout shifts up slightly when keyboard is shown but generally the top two views stay in place and the bottom one (one i want shown) is hidden by the keyboard
any help is appreciated
UPDATE
still no further with this i can make a layout witht the fixed heights and have it scroll up perfectly with the softkeyboard shown so there not the problem but i must use layout center vertical on an element and this isnt what i want to do ive also tried wrapping it all in a scroll view and using isScrollContainer true but still no joy anyone got any ideas?
I may mistake, but cause of this problem is probably the known Android bug.
So, firstly, you need to add android:windowSoftInputMode="stateHidden|adjustResize" inside your <activity> tag.
Secondly, you need to add this class to your project:
public class AndroidBug5497Workaround {
// For more information, see https://code.google.com/p/android/issues/detail?id=5497
// To use this class, simply invoke assistActivity() on an Activity that already has its content view set.
public static void assistActivity (Activity activity) {
new AndroidBug5497Workaround(activity);
}
private View mChildOfContent;
private int usableHeightPrevious;
private FrameLayout.LayoutParams frameLayoutParams;
private AndroidBug5497Workaround(Activity activity) {
FrameLayout content = (FrameLayout) activity.findViewById(android.R.id.content);
mChildOfContent = content.getChildAt(0);
mChildOfContent.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
public void onGlobalLayout() {
possiblyResizeChildOfContent();
}
});
frameLayoutParams = (FrameLayout.LayoutParams) mChildOfContent.getLayoutParams();
}
private void possiblyResizeChildOfContent() {
int usableHeightNow = computeUsableHeight();
if (usableHeightNow != usableHeightPrevious) {
int usableHeightSansKeyboard = mChildOfContent.getRootView().getHeight();
int heightDifference = usableHeightSansKeyboard - usableHeightNow;
if (heightDifference > (usableHeightSansKeyboard/4)) {
// keyboard probably just became visible
frameLayoutParams.height = usableHeightSansKeyboard - heightDifference;
} else {
// keyboard probably just became hidden
frameLayoutParams.height = usableHeightSansKeyboard;
}
mChildOfContent.requestLayout();
usableHeightPrevious = usableHeightNow;
}
}
private int computeUsableHeight() {
Rect r = new Rect();
mChildOfContent.getWindowVisibleDisplayFrame(r);
return (r.bottom - r.top);
}
}
And then simply use it by calling assistActivity() method in your MainActivity that holds ViewPagers:
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(...);
AndroidBug5497Workaround.assistActivity(this);
...
}
For more background check this thread.
You can try adding android:fitsSystemWindows="true" to your coordinator layout
I want to hide two views (a Viewpager and a LinearLayout) at once when a Button is clicked. I tried using android:animateLayoutChanges="true", but it will always start hiding the Viewpager first and then the LinearLayout, which doesn't look good.
How can I manually hide both views at the same time? I have seen examples like this were the visibility of one view is changed:
myImageView.animate()
.translationY(myImageView.getHeight())
.alpha(0.0f)
.setDuration(300)
.setListener(new AnimatorListenerAdapter() {
#Override
public void onAnimationEnd(Animator animation) {
super.onAnimationEnd(animation);
myImageView.setVisibility(View.GONE);
}
});
Is there a way to chain two animate() calls of different Viewsto trigger them simultaneously?
EDIT: This is my layout file, the Views I want to hide at the same time are the Viewpagerwith the id viewpager and the LinearLayout with the id ll_indicators:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/main_content"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:animateLayoutChanges="true"
android:fitsSystemWindows="true"
android:orientation="vertical">
<include
android:id="#+id/toolbar"
layout="#layout/toolbar" />
<include
android:id="#+id/tv_statusbar"
layout="#layout/layout_statusbar"
android:layout_width="match_parent"
android:layout_height="#dimen/statusbar_height" />
<TextView
android:id="#+id/tv_title"
android:layout_width="match_parent"
android:textColor="#color/black"
android:text="#string/some_text"
android:padding="10dp"
android:textSize="#dimen/fontSizeMedium"
android:gravity="center_horizontal"
android:layout_height="wrap_content" />
<android.support.v4.view.ViewPager
android:id="#+id/viewpager"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
app:layout_behavior="#string/appbar_scrolling_view_behavior" />
<LinearLayout
android:id="#+id/ll_indicators"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:orientation="horizontal">
<ImageView
android:id="#+id/intro_indicator_0"
android:layout_width="8dp"
android:layout_height="8dp"
android:layout_marginEnd="#dimen/activity_margin_half"
android:layout_marginRight="#dimen/activity_margin_half"
android:background="#drawable/indicator_unselected" />
<ImageView
android:id="#+id/intro_indicator_1"
android:layout_width="8dp"
android:layout_height="8dp"
android:layout_marginEnd="#dimen/activity_margin_half"
android:layout_marginRight="#dimen/activity_margin_half"
android:background="#drawable/indicator_unselected" />
</LinearLayout>
<include
android:id="#+id/ll_login"
android:layout_weight="0"
layout="#layout/item_login"
android:layout_width="match_parent"
android:layout_height="wrap_content">
</include>
</LinearLayout>
Since you didn't post your layout, if you can put your ViewPager and LinearLayout in one layout, (for example inside a RelativeLayout) then you can animate that.
if( A.isShowing && B.isSowing(
A.hide
b.hide
)
Maybe this?
You can either just animate the parent LinearLayout, all Views within will animate with it :
yourLinearLayout.animate().setDuration(300).alpha(0). ...
, or call animate() on two Views simultaneously :
yourImageView.animate().alpha(0). ...
yourLinearLayout.animate().alpha(0). ...
which would look like they are disappearing at the same time.
I have a NestedScrollView containing a LinearLayout and a RecyclerView (both inside a RelativeLayout).
<android.support.design.widget.CoordinatorLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.v4.widget.NestedScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/scroll">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/lay_account">
<LinearLayout
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#android:color/white"
android:paddingTop="10dp"
android:id="#+id/lay_total"
android:paddingBottom="10dp">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/total"
android:id="#+id/lblTotal"
android:textSize="#dimen/text_medium"
android:layout_marginLeft="20dp"
android:textColor="#color/dark_eurakostheme_color"
android:textStyle="bold"/>
<LinearLayout
android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:gravity="center_vertical|center_horizontal">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/txtTotalAmount"
android:textSize="#dimen/text_extra_extra_large"
android:gravity="center_horizontal"
android:textColor="#color/eurakostheme_color"/>
<ImageView
android:layout_width="#dimen/icon_extra_extra_large"
android:layout_height="match_parent"
android:id="#+id/imageView3"
android:src="#drawable/coin_eurakos"/>
</LinearLayout>
</LinearLayout>
<View
android:layout_width="fill_parent"
android:layout_height="1dp"
android:id="#+id/divisor"
android:background="#color/dividerColor"
android:layout_alignBottom="#+id/lay_total"/>
<android.support.v7.widget.RecyclerView
android:layout_below="#id/lay_total"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/rclBasketAmounts"
android:background="#android:color/white"
android:padding="10dp">
</android.support.v7.widget.RecyclerView>
</RelativeLayout>
</android.support.v4.widget.NestedScrollView>
</android.support.design.widget.CoordinatorLayout>
After loading the data into the RecyclerView, I need to change it's height programmatically like this:
RelativeLayout.LayoutParams lay_params = new RelativeLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,
50 + ((int) (baskets.length * getResources().getDimension(R.dimen.list_height_small))));
lay_params.addRule(RelativeLayout.BELOW, lay_total.getId());
recyclerView.setLayoutParams(lay_params);
recyclerView.setAdapter(new ListBasketAmountAdapter(baskets));
The problem is when the data has finished loading the NestedScrollView scrolls automatically scrolls to the top of the RecyclerView, hiding the LinearLayout above it. Any ideas?
Thanks.
After several days I've found a solution to the problem. You just need to add the descendantFocusability in the first layout under the ScrollView like this:
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/lay_account"
android:descendantFocusability="blocksDescendants">
The solution given by kevings14 works but it wasn't helpful in my case. I've a RecyclerView + a couple of EditText under NestedScrollView, when I added
android:descendantFocusability="blocksDescendants"
in main layout under scroll view. I was unable to focus EditText.
Then I came up with this solution, which worked for me.
<RelativeLayout
android:layout_width="match_parent"
android:focusable="true"
android:focusableInTouchMode="true"
android:layout_height="wrap_content">
In my case, I use multiple RecyclerView inside NestedScrollView. Then
it does not work for me. So my solution is, When my data update complete then I just scroll to top,
yourList.setAdapter(yourListAdapter);
scrollView.post(new Runnable() {
#Override
public void run() {
scrollView.fullScroll(ScrollView.FOCUS_UP);
//scrollView.scrollTo(0,0);
}
});
I had a nestedscrollview that would get scrolled up by itself. In the post run method of the recyclerview, I scrolled the nestedscrollview to (0,0) and all good.
rvComments.setAdapter(adapterComment);
rvComments.post(new Runnable() {
#Override
public void run() {
nestedScrollView.scrollTo(0, 0);
}
});
I have been trying to add Button's below a GraphView, and all these elements are part of a Fragment. Tried many approaches but none of them worked properly.
This is the layout file for the Fragment (fragment_graph.xml).
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.nma.util.sdcardtrac.GraphFragment">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/graph_fragment_layout"
android:orientation="vertical"
/>
</FrameLayout>
And this is the Java code dynamically adding a graph and button, placed in the Fragment's onViewCreated (View view, Bundle savedInstanceState).
storageGraph = new LineGraphView(getActivity(), graphLabel);
storageGraph.addSeries(graphSeries); // More config calls follow
...
LinearLayout view = (LinearLayout)getView().findViewById(R.id.graph_fragment_layout);
Button button = new Button(getActivity());
button.setText("Test");
view.addView(storageGraph);
view.addView(button);
The Button is not visible though I have set orientation to vertical for the LinearLayout containing it.
EDIT - solved!
I found that nesting the graph under its own LinearLayout and the buttons under another LinearLayout, and both of these wrapped in a LinearLayout fixed the problem! The LinearLayout containing the graph must be weighted (I chose a weight of 0.8).
Layout file looks like:
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.nma.util.sdcardtrac.GraphFragment">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/graph_fragment_wrap"
android:orientation="vertical"
>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="0.8"
android:id="#+id/graph_fragment_layout"
android:orientation="vertical" />
<LinearLayout
android:id="#+id/graph_buttons"
android:orientation="horizontal"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:layout_gravity="center_horizontal"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<ImageButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:src="#drawable/ic_navigation_previous_item"/>
<ImageButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/ic_navigation_next_item"/>
</LinearLayout>
</LinearLayout>
</FrameLayout>
I've just tried it and it works. Perhaps your graph is taking all the available space, so added button is below the screen? Try to wrap your LinearLayout into a ScrollView and see if there is a button in the bottom.