Develop Reference

GridView cuts off last row

I have a GridView that I populate through code, the problem is that the last row it's not fully visible. I don't know why this is happening, the layout of the Activity is pretty simple:
<?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:orientation="vertical">
<GridView
android:id="#+id/sectionGrid"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/white"
android:horizontalSpacing="0dp"
android:numColumns="1"
android:stretchMode="columnWidth"
android:verticalSpacing="10dp">
</GridView>
</LinearLayout>
And the Layout for the row is the following:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:pew="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="#color/white" >
<ImageView
android:layout_width="match_parent"
android:layout_height="180dp"
android:layout_gravity="center"
android:scaleType="centerCrop"
android:id="#+id/sectionImage"/>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_alignTop="#+id/sectionImage"
android:layout_alignLeft="#+id/sectionImage"
android:layout_alignStart="#+id/sectionImage"
android:background="#drawable/bg_section_row"
android:layout_alignBottom="#+id/sectionTitle"
android:layout_alignRight="#+id/sectionImage"
android:layout_alignEnd="#+id/sectionImage"
android:id="#+id/sectionBgView"></RelativeLayout>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="20sp"
android:textColor="#color/white"
android:scrollHorizontally="true"
android:ellipsize="end"
android:maxLines="1"
android:padding="10dp"
android:layout_alignBottom="#+id/sectionImage"
android:layout_alignLeft="#+id/sectionImage"
android:layout_alignStart="#+id/sectionImage"
android:layout_alignRight="#+id/sectionImage"
android:layout_alignEnd="#+id/sectionImage"
android:id="#+id/sectionTitle"/>
</RelativeLayout>
</LinearLayout>
I'm not sure if it might be related but currently i'm using the following theme:
<style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
What's wrong with the layout? am I missing any property for the GridView?

In GridView android:verticalSpacing or android:horizontalSpacing only works if there is another cell to give spacing between.
Even for the first cell the spacing doesn't get applied in the top but as soon as second cell is drawn the verticalSpacing property works and a gap can be observed between the cell.
In this case, the bottom cell doesn't have any other cell to show below it as a result the last cell looks like being cut from bottom.
Try giving a padding for LinearLayout in row cell.
eg: android:paddingBottom="5dp"

after wasting hours I found out this issue on the library i'm using in order to create a Sliding Menu:
https://github.com/jfeinstein10/SlidingMenu/issues/680
I've added the following code to my BaseActivity (every activity inherits from this):
if(Build.VERSION.SDK_INT >= 21)
getWindow().getDecorView().setSystemUiVisibility(View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION);
And it did the trick. The problem seem to happen only on devices with API > 21

Android: ListView pushes out everything else below it

In my app, there is a tabbed activity with three fragments. The first fragment has a form to create a new task, the second fragment has the list of all the saved tasks, and the third fragment will show the comments on a task when selected from the list in the second fragment. The third fragment is also supposed to act like a chat activity which posts comments when you type them in and tap the send button. The XML layout of this third fragment is as follows:
<?xml version="1.0" encoding="utf-8"?>
<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="match_parent"
android:background="#android:color/darker_gray"
android:orientation="vertical"
tools:context="com.example.ishita.assigntasks.CommentsFragment">
<TextView
android:id="#+id/frag_task_details"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#dd55ff"
android:padding="10dp" />
<ListView
android:id="#+id/frag_comment_list"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:transcriptMode="normal" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:background="#android:color/white">
<EditText
android:id="#+id/frag_msg_edit"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:inputType="textMultiLine"
android:layout_weight="1" />
<ImageButton
android:id="#+id/frag_send_btn"
style="?android:attr/buttonStyleSmall"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="0"
android:background="#android:color/background_light"
android:contentDescription="#string/send_btn"
android:src="#android:drawable/ic_menu_send" />
</LinearLayout>
</LinearLayout>
As you can see, there is a TextView and a ListView and below that is another LinearLayout. Here is how it should look (the purple bar is the TextView):
And here is how it actually looks:
The TextView shows up above the ListView, but the LinearLayout does not. It is there, though. If I do android:layout_marginBottom="20dp" on the outermost LinearLayout, it does show up, but the ActionBar scrolls up and overlaps with the notification bar so that the title on the ActionBar and the notifications on the notification bar are both visible simultaneously and neither is legible.
I searched a lot and this seemed a common issue, but none of the solutions helped me. Believe me, I tried everything I could find. I tried wrapping the whole thing in a FrameLayout, using a RelativeLayout in place of the outermost LinearLayout, using two LinearLayouts--one to wrap the TextView and the ListView and the other to wrap the EditText and the ImageButton, etc., but nothing was able to show the bottom LinearLayout below the ListView. I even tried to set focus on the EditText when the fragment launches so that the keyboard would show and I can type, but even that doesn't help.
Note: On the other hand, if I use the exact same layout on an activity, the bottom LinearLayout displays exactly as it should.
I am unable to find the bug. Please help!

It looks like your toolbar pushes fragment layout down without decreasing its height. I have no idea why this happens (there are no root layout code here).
As a workaround you can set fragments layout bottom margin to ?attr/actionBarSize

As you have given layout_weight 1 in listview layout, so it occupies the whole space available. In order to get rid of you have to give some static height or use layout_weight in right manner
<ListView
android:id="#+id/frag_comment_list"
android:layout_width="match_parent"
android:layout_height="500dp"
android:transcriptMode="normal" />
or try like this
<?xml version="1.0" encoding="utf-8"?>
<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="match_parent"
android:background="#android:color/darker_gray"
android:orientation="vertical"
tools:context="com.example.ishita.assigntasks.CommentsFragment">
<TextView
android:id="#+id/frag_task_details"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#dd55ff"
android:padding="10dp" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:orientation="vertical"
android:background="#android:color/white">
<ListView
android:id="#+id/frag_comment_list"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:transcriptMode="normal" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:orientation="horizontal"
android:background="#android:color/white">
<EditText
android:id="#+id/frag_msg_edit"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:inputType="textMultiLine"
android:layout_weight="1" />
<ImageButton
android:id="#+id/frag_send_btn"
style="?android:attr/buttonStyleSmall"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="0"
android:background="#android:color/background_light"
android:contentDescription="#string/send_btn"
android:src="#android:drawable/ic_menu_send" />
</LinearLayout>
</LinearLayout>

All,
Thank you for all your responses. I found a workaround by trial and error now and thought I should post the answer for others who face the same issue. I set android:layout_marginBottom="50dp" on the inner LinearLayout (the one wrapping the comments bar--EditText and ImageButton). Somehow, this sets the layout correctly and the fragment functions properly in both Lollipop and Jellybean OS's. I haven't tested on other OS versions.

First of all you should read this, what is layout_weight and how it works.
You assigned layout_weight to ListView as 1, it means it covers whole height. just change it to 0.7 or any proportion you want (less than 1) will solve the problem.
<ListView
android:id="#+id/frag_comment_list"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="0.7"
android:transcriptMode="normal" />

Grid layout last rows being cut off

I have a layout which holds the grid layout as follows
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<GridView
android:id="#+id/gridview_gallery_mine"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_marginBottom="10sp"
android:background="#color/background"
android:gravity="center"
android:horizontalSpacing="4dip"
android:numColumns="4"
android:padding="4dip"
android:stretchMode="columnWidth"
android:verticalSpacing="4dip" />
<RelativeLayout
android:id="#+id/empty_view"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:visibility="gone" >
<TextView
android:id="#+id/textview"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
android:text="#string/empty_list" />
</RelativeLayout>
</RelativeLayout>
The problem is that, the last rows of the grid is being cut to half. I mean the last row is only half visible. I tried giving the gridview and also its parent (RelativeLayout) padding, margin but nothing works. BTW I have this layout inflated inside a fragment with the tabs.
P.S I am learning android design. Thanks.

I had used the combinations of
Android basic actionbar,
tabhost from support library.
The answer to above question was since i had no other options for implementation, Applying padding bottom on the parent node of the content made it work.
I tried another combination with the Toolbar in appcompat v7.21 (or 21), It worked without the extra padding, So i dint get time to investigate who causing the problem, actionbar or tabhost.
~ Hope it helps

Multiple screen sizes and XML Layout

I have read everything I can find, and I just can't figure this out. I have an XML with a heading, then a listview, and then 2 buttons on the bottom row. In order to make the layout look perfect, I have "hardcoded" the size (467dp) of the listview. This is fine on my Samsung Galaxy S4, but I'm not sure it will look appropriate on other phones of slightly different sizes. I tested it on a Galaxy 8" tab and it did not look right. I then tested it on a 10.1" tab and it (again) did not look right. Basically the bottom buttons were up in the middle of the screen. I got around this by creating layouts for sw600dp and sw720dp. For each of those I had to hardcode a different size for the listview. It would seem to me that there is a better way to have a heading-listview-button XML that would display (relatively) the same on any device. Can anyone please tell me how to to alter my XML so I don't have to hardcode the size of the listview?
LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<TextView
android:id="#+id/title_line"
android:layout_width="match_parent"
android:layout_height="50dp"
android:gravity="center"
android:text="#string/workout_locations">
</TextView>
<ListView
android:id="#+id/location_list"
android:layout_width="match_parent"
android:layout_height="467dp"
android:longClickable="true" >
</ListView>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="50dp"
android:orientation="horizontal" >
<ImageButton
android:id="#+id/help_button"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1"
android:contentDescription="#string/help_description"
/>
<ImageButton
android:id="#+id/add_button"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1"
android:contentDescription="#string/add_description"
/>
</LinearLayout>
</LinearLayout>

android:layout_weight="1 add this in the buttons

I wonder if this might help:
ensure that the entire layout is a relativeLayout, and inside it, put the listview
<ListView
android:id="#+id/location_list"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="50dp" // the size of the buttons height
android:longClickable="true" >
</ListView>
and below it another relativelayout with the buttons inside it.
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="50dp"
android:layout_gravity="bottom"
android:layout_alignParentBottom="true">
<ImageButton
android:id="#+id/help_button"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:contentDescription="#string/help_description"
/>
<ImageButton
android:id="#+id/add_button"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:contentDescription="#string/add_description"
/>
If this still causes an issue, then you could write :
android:layout_above="#+id/relButtonLayout"
inside the listview.

Use layout_weight to take up as much room that can be afforded.
<ListView android:id="#+id/location_list"
android:layout_width="match_parent"
android:layout_height="0dip"
android:layout_weight="1"
android:longClickable="true" >
</ListView>

If you've hardcoded some sizes, you can bet it won't look good in most of the devices. In order to do that, it's always better using layout_height and layout_weight set to wrap_content or match_parent depending on what you need.
There's another important tool for the case you describe: layout_weight, as you might have already used. Messing with a ListView to fit the design you want can be hard at the first time, but once you discover how to set up its layout it's easy for the rest of them.
In my case, this definition always work as should:
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >
<ListView
android:id="#+id/mylistview"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:scrollbars="vertical" >
</ListView>
</LinearLayout>
Take a look at it: I've set a singular LinearLayout (in this case because it has more views than just the ListView I'm showing), but I'm setting the weight of that ListView to 1, being the sumWeights of that LinearLayout 1. This way you assure yourself the ListView will expand as long as it can, without the needing of hardcoding values.
It's just a matter of playing around with it for a while, but the less values you hardcode, the more adaptable will be on other devices.

Split ListView items into two columns

I would like to split an item in a ListView to get the same result as the ListView in Samsung's Contact phones list:
When clicking on the left/right column, only that column's background changes. I tried inserting an Image Button to a one column list view, but when not clicking directly on the button, the whole row's background changes (including the ImageButton's background).
How is it possible to get the same ListView as the of Samsung?

I used this code and it work for me good
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal"
android:weightSum="3" >
<Button
android:id="#+id/text"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="2"
android:drawableRight="#drawable/ic_launcher"
android:gravity="center_vertical"
android:text="trtrtrt" />
<ImageButton
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:src="#drawable/ic_launcher" />
</LinearLayout>

Use android:listSelector="#null" in list's xml and if it does not work then I want to have a look into your code if you can post it.