Develop Reference

Buttons gone after added swiperefreshlayout

I have a layout with listview and two buttons side by side at the bottom of the listview. Everything work fine until I have added the swiperefreshlayout for my listview.
My codes are as below.
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:background="#FFF"
>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="50dp"
android:id="#+id/search_bar"
android:background="#color/colorPrimaryDark"
android:orientation="vertical"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
>
<EditText
android:id="#+id/keyword_editText"
android:layout_width="fill_parent"
android:layout_height="30dp"
android:background="#drawable/search_edit_text"
android:hint="Keyword"
android:textColorHint="#color/list_item_title"
android:textColor="#000"
android:layout_centerVertical="true"
android:maxLines="1"/>
</RelativeLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/listView_layout"
android:orientation="vertical"
android:layout_below="#+id/search_bar"
>
<android.support.v4.widget.SwipeRefreshLayout
android:id="#+id/refresh"
android:layout_height="match_parent"
android:layout_width="match_parent">
<ListView
android:layout_width="wrap_content"
android:layout_height="0dip"
android:layout_weight="1"
android:id="#+id/RsListView"
android:dividerHeight="1dp"
android:divider="#D3D3D3"/>
</android.support.v4.widget.SwipeRefreshLayout>
<LinearLayout
android:id="#+id/test"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
>
<Button
android:id="#+id/req_history_button"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Request History"
android:layout_weight="1"
android:background="#drawable/request_history_button"
android:textColor="#drawable/button_text_color"
/>
<Button
android:id="#+id/apprv_history_button"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Approval History"
android:layout_weight="1"
android:background="#drawable/approval_history_button"
android:textColor="#drawable/button_text_color"
/>
</LinearLayout>
</LinearLayout>
Sorry for dumping my codes here as I can't figure out any other way for you guys to understand my code.
Please help

Inside LinearLayout usually all children have even dimension according to orientation. However, when you would like one child to take a little amount of place and another to fill the rest, you might be interested in layout_weight parameter. If the child that should fill the space gets android:layout_weight="1" it will fill the space making a place for other views.
In order to see the buttons add android:layout_weight="1" to SwipeRefreshLayout and set android:layout_height="0dp". That will make your buttons visible.

RecycleView Not Scrolling by adding RelatvieLayout below It

I have viewpager at the top to slide and view images . and after a list to see remaining images or whatever i want to display in list and after that i have a RelativeLayout below this list which i will populate with the Code
Now Issue is :-
I am facing a problem with RecycleView . It was working fine until i add a RelativeLayout to parentofbottom and setting RecycleView property to above this RelativeLayout . Now Issue is RecycleView is not scrolling at all . whats wrong with the code. What needs to be change .Or Suggest me anyother way to achieve this design
<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/drawer_layout"
xmlns:ads="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
>
<RelativeLayout
android:id="#+id/container"
android:layout_width="match_parent"
android:focusableInTouchMode="true"
android:layout_height="match_parent" >
<RelativeLayout
android:id="#+id/relativeHeader"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:background="#color/headecolor" >
<Button
android:id="#+id/btnOpenDrawer"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_centerVertical="true"
android:background="#drawable/menu_icon" />
<Button
android:id="#+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_centerVertical="true"
android:background="#drawable/alert_icon" />
<TextView
android:id="#+id/txtTitle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
android:textStyle="bold"
android:text="A La Une"
android:textAppearance="?android:attr/textAppearanceMedium"
android:textColor="#color/blackColor" />
</RelativeLayout>
<android.support.v4.widget.NestedScrollView
android:id="#+id/scroler"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="#+id/relativeHeader"
android:fillViewport="true"
android:background="#android:color/white" >
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:focusableInTouchMode="true"
android:background="#android:color/white" >
<RelativeLayout
android:id="#+id/relativeLayout1"
android:layout_width="wrap_content"
android:descendantFocusability="blocksDescendants"
android:layout_height="wrap_content" >
<RelativeLayout
android:id="#+id/rlPager"
android:layout_width="wrap_content"
android:layout_height="wrap_content" >
<egdigital.alpes1.view.WrapContentViewPager
android:id="#+id/view_pager"
android:layout_width="match_parent"
android:layout_height="220dp"
android:adjustViewBounds="true"
android:background="#drawable/news_img_transparent"
/>
<ImageView
android:id="#+id/imageView_dot"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignBottom="#+id/view_pager"
android:layout_alignParentLeft="true"
android:src="#drawable/scroll_dot1" />
</RelativeLayout>
</RelativeLayout>
<RelativeLayout
android:id="#+id/rlRecycle"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#+id/relativeLayout1"
android:layout_above="#+id/rlMiniPlayer"
>
<android.support.v7.widget.RecyclerView
android:id="#+id/recyclerview"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:clipToPadding="false"
android:paddingBottom="80dp">
</android.support.v7.widget.RecyclerView>
</RelativeLayout>
<RelativeLayout
android:id="#+id/rlMiniPlayer"
android:layout_width="match_parent"
android:layout_height="80dp"
android:layout_alignParentBottom="true"
>
</RelativeLayout>
</RelativeLayout>
</android.support.v4.widget.NestedScrollView>
</RelativeLayout>
<fragment
android:id="#+id/navigation_drawer"
android:name=".NavigationDrawerFragment"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="start"
android:layout_marginLeft="25dp"
tools:layout="#layout/fragment_navigation_drawer" />
</android.support.v4.widget.DrawerLayout>

1) Change
android:layout_below="#+id/relativeLayout1"
to android:layout_below="#id/relativeLayout1" and change anywhere else you have layout_below or layout_above
+ is used when creating a new id. When giving an already created id we use it without +
2) You don't really need RelativeLayout with id rlRecycle. You can directly move layout_below and layout_above attributes to RecyclerView because it's already under top level RelativeLayout

I Found The Solution . i know there are lots of extra RelativeLayouts . Know I removed it . and putted rlMiniPlayer below the nested scrollview
Because I am using nestedscrolling=true . in the code . This is creating the problem
Like This :-
</android.support.v4.widget.NestedScrollView>
<RelativeLayout
android:id="#+id/rlMiniPlayer"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
>
</RelativeLayout>

Using a RelativeLayout to split a layout evenly

I have a Listview where each listview item looks like this!
The ListViewItem is a RelativeLayout. Now I am having problem in creating the two split-screen buttons. Currently I'm doing it like this.
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<LinearLayout
android:layout_height="fill_parent" android:layout_width="fill_parent"
android:layout_below="#+id/ReviewText">
<RelativeLayout
android:layout_weight="1"
android:layout_height="fill_parent" android:layout_width="0dp"
android:onClick="likeClicked"
android:clickable="true" >
<!-- SOME CODE -->
</RelativeLayout>
<RelativeLayout
android:layout_weight="1"
android:layout_height="fill_parent" android:layout_width="0dp"
android:onClick="likeClicked"
android:clickable="true" >
<!-- SOME CODE -->
</RelativeLayout>
</LinearLayout>
<RelativeLayout>
This is working perfectly fine, but the android dev documentation here says that
Furthermore, nesting several instances of LinearLayout that use the
layout_weight parameter can be especially expensive as each child
needs to be measured twice. This is particularly important when the
layout is inflated repeatedly, such as when used in a ListView or
GridView.
Can I improve my code for performance. If yes, How? Is there any other way to have two buttons split evenly without using LinearLayout?

In order to minimize layout nesting, so to optimize performances, I'd write a layout (which does take advantage of the layout's relativity) like this one:
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
>
<View
android:id="#+id/dummy"
android:layout_width="1dp"
android:layout_height="1dp"
android:layout_centerHorizontal="true"
android:visibility="invisible"
/>
<Button
android:id="#+id/btnLeft"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_toLeftOf="#id/dummy"
android:onClick="likeClicked"
android:clickable="true"
/>
<Button
android:id="#+id/btnRite"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_toRightOf="#id/dummy"
android:onClick="likeClicked"
android:clickable="true"
/>
<RelativeLayout>
I put a dummy View which is aligned to the center, then 2 buttons which I align to the left and to the right side of it.

For a simple layout like your's LinearLayout's are perfect choice. The only thing to be wary about is nesting layout weight's inside a view whose parent already has a layout-weight assigned. This is perfectly ok:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<ImageView
android:id="#+id/imageView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/ic_launcher" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<Button
android:id="#+id/button1"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="Button" />
<Button
android:id="#+id/button2"
android:layout_width="0dp"
android:layout_weight="1"
android:layout_height="wrap_content"
android:text="Button" />
</LinearLayout>
While this is not:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent" >
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_weight="1"
android:orientation="vertical" >
<Button
android:id="#+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1" > <!-- nesting this way is bad for performance -->
android:text="Button" />
<Button
android:id="#+id/button2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="Button" />
</Button>
</LinearLayout>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_weight="1"
android:orientation="vertical" >
<!-- this is ok -->
<Button
android:id="#+id/button2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Button" />
</LinearLayout>
</LinearLayout>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<place top item layout here>
<LinearLayout
android:layout_height="fill_parent" android:layout_width="fill_parent"
android:orientation="horizontal"
android:weightSum="2">
<RelativeLayout
android:layout_height="fill_parent" android:layout_width="0dp"
android:onClick="likeClicked"
android:clickable="true"
android:layout_weight="1"
>
<!-- SOME CODE -->
</RelativeLayout>
<RelativeLayout
android:layout_weight="1"
android:layout_height="fill_parent" android:layout_width="0dp"
android:onClick="likeClicked"
android:clickable="true" >
<!-- SOME CODE -->
</RelativeLayout>
</LinearLayout>
</LinearLayout>

Hope , The performance can be improved if you follow the listed points
First thins don't use much XML code when you need something dynamically
instead of creating the 2 relative layouts in XML , create a class where it extends Linear layout/Relative layout
add the views which you want to show in the list item to the above layout
Measure the height and width dynamical with in the same class
And make sure the layout is parametrized where you can pass the content dynamically
Finally , you can inflate the created view , Using getview method of an adapter**
Refer the following link
Dynamic listview content loader

ScrollView with LinearLayout inside does not work

I have a scrollView with two inside LinearLayout but it does not work, the listView does not show all items but only a few. How can I do?
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:fillViewport="true">
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<LinearLayout
android:id="#+id/welcomeView"
android:layout_width="250dp"
android:layout_height="100dp"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="30dp"
android:gravity="center"
android:orientation="horizontal"
android:weightSum="100" >
<ImageView
android:id="#+id/image_User_welcome"
android:layout_width="match_parent"
android:layout_height="100dp"
android:layout_weight="70"
android:src="#drawable/user" />
<TextView
android:id="#+id/private_area_welcome"
style="#style/CoopLabel"
android:layout_width="match_parent"
android:layout_height="100dp"
android:layout_weight="30"
android:text="#string/private_area_welcome" />
</LinearLayout>
<LinearLayout
android:id="#+id/layout_list"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:layout_below="#+id/welcomeView">
<TextView
android:id="#+id/private_area_lists"
style="#style/CoopLabel"
android:layout_width="280dp"
android:layout_height="wrap_content"
android:layout_alignTop="#+id/linearLayout1"
android:layout_marginLeft="20dp"
android:layout_marginRight="20dp"
android:gravity="center"
android:text="#string/private_area_lists" />
<ListView
android:id="#+id/privareaList"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_margin="5dp"
android:textColor="#000000" >
</ListView>
<ImageButton
android:id="#+id/logoutBtn"
android:layout_width="160dp"
android:layout_height="35dp"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:padding="0dp"
android:scaleType="centerCrop"
android:src="#drawable/tasto_logout"
/>
</LinearLayout>
</RelativeLayout>
</ScrollView>

It is not recommended to use scrollables containing other scrollables - your layout contains ListView inside Scrollview.
You can design your layout as a ListView - you can add header and footer views(welcomeView, logoutBtn, etc..) to the top and bottom of listview - see methods ListView.addHeaderView and addFooterView) - scrolling will be managed by ListView,
or you can replace listview in your original layout with simple LinearLayout and populate it manually row by row(do not forget to assign click listeners to rows etc..) - scrolling will be managed by ScrollView.
To find more information about this problem, try to google "android listview inside scrollview", i am sure it will help you. :-)

Android, LinearLayout won't scroll

I am relatively new to android programing. Can anybody tell me why my ScrollView won't scroll?
My activity has implemented OnGestureListener for getting some touch information. But, I tried to disable onGestureListener and it still won't work.
It works outside of the SlidingDrawer. Is it possible to get it work inside of the SlidingDrawer?
I solved it by giving to ScrollView ID and then put that ID in SlidingDrawer android:content="#+id/content".
<?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="match_parent"
android:layout_gravity="right"
android:background="#drawable/pozadina_touchpad"
android:orientation="vertical" >
<LinearLayout
android:layout_width="100dp"
android:layout_height="match_parent"
android:layout_gravity="right"
android:orientation="vertical" >
<SlidingDrawer
android:id="#+id/prosirenje"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal"
android:content="#+id/content"
android:handle="#+id/handle" >
<Button
android:id="#+id/handle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#drawable/gumb_slider"
/>
<ScrollView
android:layout_width="fill_parent"
android:layout_height="wrap_content">
<LinearLayout
android:id="#+id/content"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#drawable/slider"
android:gravity="center"
android:onClick="nemaSkrola"
android:orientation="vertical" >
<Button
android:id="#+id/ico_povecalo"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="20dp"
android:background="#drawable/ikona_povecalo" />
<Button
android:id="#+id/ico_desktop"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="20dp"
android:background="#drawable/ikona_komp" />
<Button
android:id="#+id/ico_daljinski"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="20dp"
android:background="#drawable/ikona_play" />
<Button
android:id="#+id/ico_tipkovnica"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="20dp"
android:background="#drawable/ikona_tipka" />
<Button
android:id="#+id/ico_settings"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="20dp"
android:background="#drawable/ikona_settings" />
</LinearLayout>
</ScrollView>
</SlidingDrawer>
</LinearLayout>
</LinearLayout>

give some value to scrollView's width and height and try like this
<ScrollView
android:id="#id/content"
android:layout_width="300dp"
android:layout_height="300dp"
android:layout_centerHorizontal="true"
android:layout_marginTop="15dp">
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >
</LinearLayout>
</ScrollView>
please change scrollview id like this:
android:id="#id/content"
please change handle button id like this:
android:id="#id/handle"

The containers (hierarchical parents) of the ScrollView have the following attribute set this way: android:layout_height="match_parent", which forces them to limit their content to the height of the activity (screen).
For your ScrollView to work, try to get the ScrollView to a higher hierarchical level, so that won't be constrained by its parent.