Develop Reference

GridView item height is mismatched with other

I am using a grid view. It shows issue in some devices. One item of the grid view looks shorter in height than others.
It looks like this in some devices, and in some its fine.
Layout :
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:app="http://schemas.android.com/apk/res-auto"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
android:layout_width="match_parent"
android:layout_height="match_parent">
<RelativeLayout
android:layout_width="match_parent"
android:background="#android:color/white"
android:layout_height="match_parent">
</RelativeLayout>
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fillViewport="true">
<LinearLayout android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.example.admin.fueloneApp.MainDriver"
tools:showIn="#layout/app_bar_main"
android:weightSum="8">
<TextView
android:id="#+id/main_welcome"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:padding="#dimen/dimen_20dp"
android:text="#string/welcome"
android:textColor="#color/colorPrimary"
android:textStyle="bold" />
<GridView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/gridviewMain"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginBottom="#dimen/dimen_40dp"
android:layout_marginLeft="#dimen/dimen_40dp"
android:layout_marginRight="#dimen/dimen_40dp"
android:columnWidth="80dp"
android:horizontalSpacing="#dimen/dimen_10dp"
android:numColumns="2"
android:stretchMode="columnWidth"
android:verticalSpacing="10dp"></GridView>
</LinearLayout>
</ScrollView>
<TextView
android:id="#+id/textView20"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:layout_centerInParent="false"
android:text="For Any Queries Related To Mobile App Click On Service Request"
android:textAlignment="center" />
</RelativeLayout>
Item layout
EDIT : Added item layout of the grid view.
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/single_grid"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/colorPrimary1"
android:orientation="vertical">
<ImageView
android:id="#+id/gris_img"
android:layout_gravity="center"
android:layout_width="80dp"
android:scaleType="fitXY"
android:layout_height="100dp" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/grid_cat"
android:textSize="15sp"
android:textColor="#color/divider_color"
android:gravity="center"/>
</LinearLayout>
How can I manage the height of each item? What is the solution for this? Please help. thank you...

Gridview is having a tendency to adjust the height of all element with the tallest element in all. Hence this behaviour you are seeing.You can use StaggeredGridView.

i think your grid layout cell height is wrap_content. this problem same occur with me . change your layout height wrap_content to match_parent.
android:layout_height="match_parent"
for better solution please update your grid view item layout cell here.

Add Textview property :
android:maxLines="1"
android:singleLine="true"
if text not visible single line, you need change textview to autosizing-textview
enter link description here

How to Control Visibility of items in a Linear Layout in my App?

I have a Vertical linear layout with 2 item. One is a is a customview which is extended from a framelayout and the 2nd one is a textview with a drawable as background. The visibility have to be controlled dynamically from gone to visible.
The issue is that when i change the visibility of the item from gone to visible the order is not coming as i intended. The the second item is below the customview. I want it to come as the 2nd item, below the customview
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:textureview="http://schemas.android.com/apk/res-auto">
<LinearLayout
android:id="#+id/comment_holder"
android:orientation="vertical"
android:gravity="center_horizontal"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<com.custom_views.CircularFrameLayout
android:id="#+id/comment_holder_circular_layout"
android:layout_gravity="center_horizontal"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<ImageView
android:id="#+id/user_avatar"
android:visibility="gone"
android:layout_gravity="center_horizontal"
android:layout_width="#dimen/comment_avatar_width"
android:layout_height="#dimen/comment_avatar_width" />
<com.custom_views.PlaybackTextureView
android:visibility="gone"
android:id="#+id/playback_texture_view"
android:layout_width="match_parent"
android:layout_height="wrap_content"
textureview:isAuthorMode="true"/>
</com.custom_views.CircularFrameLayout>
<LinearLayout
android:visibility="gone"
android:id="#+id/c_holder"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingTop="8dp"
android:paddingBottom="16dp"
android:paddingStart="4dp"
android:paddingEnd="4dp"
android:background="#drawable/chat_bubble_top_arrow_orange"
android:orientation="vertical">
<TextView
android:id="#+id/video_comment_user_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="12sp"
android:textColor="#color/black_50"
android:fontFamily="sans-serif" />
</LinearLayout>
</LinearLayout>
</FrameLayout>
NOTE: I tried adding weight to the custom layout as 1. But it still didnt help.

Doesn't wrap_content adjust to the size of fonts?

My understanding was that the wrap_content take as much space as needed by its contents. But doesn’t this apply to TextViews as well?
In the following layout why when I change the font of TextView with id real_status to 24 the text is partially hidden? I was expecting that due to the wrap content the enclosing TextView it would wrap around the 24 sp and display the text fine. It is fine with 18sp.
Layout:
<?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:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
>
<TextView
android:id="#+id/real_status"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBottom="#+id/full_display_name"
android:layout_alignParentRight="true"
android:layout_alignTop="#+id/full_display_name"
android:gravity="center_vertical"
android:textSize="24sp"
android:textStyle="bold"
tools:text="Active"
/>
<TextView
android:id="#+id/full_display_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_toLeftOf="#id/real_status"
android:gravity="center_vertical"
android:text="The real user status:"
android:textSize="16sp"
/>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#+id/full_display_name"
android:gravity="right"
>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center_vertical"
android:visibility="gone"
tools:text="Just a text view"
tools:visibility="visible" />
</LinearLayout>
</RelativeLayout>
</LinearLayout>
With 18sp:
With 24sp:
UPDATE:
Following the answers I removed the layout top/bottom and the font adjusted but now I see that the TextView overlaps with the next widget. Adding red background is more visible.
I thought that by “growning” the TextView the rest would move down and not overlap

whenever You suffering from this type of problem You can LiniarLayout is best if You understand it very well. because of wrap_content and match_parent is simple to handle in LiniarLayout.
lets understand it.(For Your case)..
1.take two LiniarLayout(parent have verticle orientation..)
i give Id LL1(horizontal) and id LL2 for your case
2.in first layout two textview #+id/full_display_name and #+id/real_status
in real_status have match_parent in width so it easy to divide parent(fill_parent) and set its android:gravity="right"
3.LiniarLayout as it is without relate
See belove XML code...
<?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="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<LinearLayout
android:id="#+id/LL1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal" >
<TextView
android:id="#+id/full_display_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="The real user status:"
android:textSize="16sp" />
<TextView
android:id="#+id/real_status"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="right"
android:text="Active"
android:textSize="26sp" />
</LinearLayout>
<LinearLayout
android:id="#+id/LL2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#+id/real_status"
android:gravity="right" >
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center_vertical"
android:text="Just a text view" />
</LinearLayout>
</LinearLayout>
It will help you Your GUI give bestView in All devices with any size of text
Hope it help You

Remove these two line will fix your problem
android:layout_alignBottom="#+id/full_display_name"
android:layout_alignTop="#+id/full_display_name"

Yes the wrap_content will take as much space needed by the view. It will also applied to the TextView also. The problem here is you written android:layout_alignBottom="#+id/full_display_name" to real_status text view. This attribute is overriding the wrap_content So remove allignBottom attribute from the text view.
UPDATE
For your bottom linear layout update the line
android:layout_below="#+id/full_display_name"
with
android:layout_below="#+id/real_status"

ScrollView going behind button in Android

Why is the scrollview going behind the button here? I want the scrollview to stretch in height depending on the device but cant get it to work as it always goes behind the button.
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/detail_view"
style="#style/DetailView">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:orientation="vertical" >
<TextView
style="#style/TextView"
android:id="#+id/textview_message_title"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:gravity="center">
</TextView>
<TextView
style="#style/TextView"
android:id="#+id/textview_message_date"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:gravity="center">
</TextView>
<ScrollView
android:id="#+id/scrollview_message_text"
android:layout_height="wrap_content"
android:paddingBottom="20dip"
android:layout_width="fill_parent">
<TextView
style="#style/TextView"
android:id="#+id/textview_message_text"
android:layout_width="fill_parent"
android:layout_height="wrap_content">
</TextView>
</ScrollView>
</LinearLayout>
<LinearLayout style="#style/DetailView.Buttons"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<Button
style="#style/Button"
android:layout_marginTop="5dip"
android:id="#+id/button_view_file"
android:text="#string/viewfile"/>
</LinearLayout>
</RelativeLayout>

Here is a working copy of what I think you are looking for
1: Moved the buttons to the top of the relative layout ( added an id )
android:layout_alignParentBottom="true"
<LinearLayout android:id="#+id/buttons"
android:layout_alignParentBottom="true"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<Button
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:layout_marginTop="5dip"
android:id="#+id/button_view_file"
android:text="Button"/>
</LinearLayout>
2: Add in the layout containing the scroll change the width and height to match parent
but ( CRITICAL ) add android:layout_above="#id/buttons"
<LinearLayout
android:layout_above="#id/buttons"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#android:color/darker_gray"
android:gravity="center"
android:orientation="vertical" >
So putting it all together:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_height="match_parent"
android:layout_width="match_parent"
android:id="#+id/detail_view"
>
<!-- Buttons at the top of layout but aligned to the bottom -->
<LinearLayout android:id="#+id/buttons"
android:layout_alignParentBottom="true"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<Button
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:layout_marginTop="5dip"
android:id="#+id/button_view_file"
android:text="Button"/>
</LinearLayout>
<!-- Linear layout to fill screen, but assigned to layout above the buttons -->
<LinearLayout
android:layout_above="#id/buttons"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#android:color/darker_gray"
android:gravity="center"
android:orientation="vertical" >
<TextView
android:id="#+id/textview_message_title"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:gravity="center">
</TextView>
<TextView
android:id="#+id/textview_message_date"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:gravity="center">
</TextView>
<ScrollView
android:id="#+id/scrollview_message_text"
android:layout_height="wrap_content"
android:paddingBottom="20dip"
android:layout_width="fill_parent">
<TextView
android:id="#+id/textview_message_text"
android:layout_width="fill_parent"
android:layout_height="wrap_content">
</TextView>
</ScrollView>
</LinearLayout>
</RelativeLayout>
I removed the styles so I could see it in the layout an make sure this worked before posting. Hope this helps.
Relative layout allows you to layer elements on top of each other. So if that is not what you are looking for you need to make use of the toLeft, toRight, above, below directives to nudge the layouts into the correct position.

This happens because you use Relative layout as the root layout. So both layout are placed on the same place but the button layout is declared after the scrollview so it is shown above the scrollview
The opposite would happen if you were defining the button before the scrollview
So you should define it as shown below to achieve what you want.
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/detail_view"
style="#style/DetailView">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:layout_above="#id/layout_bottom"
android:orientation="vertical" >
<TextView
style="#style/TextView"
android:id="#+id/textview_message_title"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:gravity="center">
</TextView>
<TextView
style="#style/TextView"
android:id="#+id/textview_message_date"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:gravity="center">
</TextView>
<ScrollView
android:id="#+id/scrollview_message_text"
android:layout_height="wrap_content"
android:paddingBottom="20dip"
android:layout_width="fill_parent">
<TextView
style="#style/TextView"
android:id="#+id/textview_message_text"
android:layout_width="fill_parent"
android:layout_height="wrap_content">
</TextView>
</ScrollView>
</LinearLayout>
<LinearLayout
android:id="#+id/layout_bottom"
style="#style/DetailView.Buttons"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<Button
style="#style/Button"
android:layout_marginTop="5dip"
android:id="#+id/button_view_file"
android:text="#string/viewfile"/>
</LinearLayout>
</RelativeLayout>
or you can try and use LinearLayout as the root view and set
layout_height = "0dp"
layout_weight = "1"
to the layout containing the scrollview
using both these way will make the button stick to the bottom of the layout and the top layout will get all the remaining height.
Good Luck

Why is the scrollview going behind the button here?
Because it is coming first in your layout, ReletiveLayout and FrameLayout can be used to provide Z-ordering, So every child which comes later in your layout having higher z value so it goes up.Add android:layout_below = "#id/scrollview_message_text" to your last linearlayout or order your views within in mind of this characteristic of reletivelayout.

Aligning my views to the right

Alright, what I'm trying to do is: setting an imageview to be on the right and the 3 textviews will be located on the left relative to the image. With the following XML code, the imageview is on the left and the 3 textviews are located in the right of the imageview.
Here's the look of it now:
As I said, I want the image to be aligned on the right side, and the 3 textviews on the left of the image.
So here's the current xml: http://pastebin.com/r68S1QKv
If I change the LinearLayout to RelativeLayout (so I can use alignParentRight = true), the textviews stack on each other and are not displayed vertically.
Suggestions, please?
EDIT: Looks like I haven't clarify the wanted look, here's an illustration of what I want:

Use This Code.Use RelativeLayout as parent & assign android:layout_alignParentRight="true" to his child this set your all view to right side.
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<LinearLayout
android:layout_width="wrap_content"
android:layout_marginRight="20dp"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:orientation="horizontal" >
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical" >
<TextView
android:id="#+id/row_title"
style="bold"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="hey1" />
<TextView
android:id="#+id/row_subtitle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="hey2" />
<TextView
android:id="#+id/row_postcode_city"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="hey3" />
</LinearLayout>
<ImageView
android:id="#+id/icon"
android:layout_marginRight="20dp"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/ic_launcher" />
</LinearLayout>
</RelativeLayout>

What you can do - is to make outer RelativeLayout, make you image alignParentRight=true, put text views in a separate linear layout (with vertical orientation), align your LinearLayout with text views to the left edge of the image view (layout_toLeftOf="#+id/img_id").
Here is what I manage to do following this approach:
<?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"
android:orientation="horizontal">
<LinearLayout
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:layout_toLeftOf="#+id/img"
android:orientation="vertical"
android:id="#+id/text_container">
<TextView
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:text="text1"/>
<TextView
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:text="text2"/>
<TextView
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:text="text3"/>
</LinearLayout>
<ImageView
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:layout_alignParentRight="true"
android:src="#drawable/icon"
android:id="#+id/img"/>
</RelativeLayout>