Develop Reference

android layout center and bottom

In my layout i want to display two imagebuttons in the center and a my amountmeter below it on the bottom, all centered vertically, i have tried many ways but cant seem to find that perfect layout. all the component align vertically and center but it makes my amountmeter small and not full width of the screen.
How it should be
how it is now
updated code
current layout:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:gravity="center"
android:orientation="vertical" >
<ImageButton
android:id="#+id/purchase"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:background="#drawable/round_button"
android:src="#drawable/ic_cart" />
<ImageButton
android:id="#+id/sell"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:background="#drawable/round_button"
android:src="#drawable/ic_sell" />
<com.example.mobile.view.AmountMeterView
android:id="#+id/mobileAmount"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_gravity="center|bottom"
android:padding="4dp" />

COPY PASTE BELOW CODE
<?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" >
<ImageButton
android:id="#+id/purchase"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:src="#drawable/ic_launcher" />
<ImageButton
android:id="#+id/sell"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#+id/purchase"
android:layout_centerHorizontal="true"
android:src="#drawable/ic_launcher" />
<com.example.mobile.view.AmountMeterView
android:id="#+id/mobileAmount"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true"
android:layout_alignParentRight="true"
android:layout_below="#+id/sell"
android:padding="4dp"
android:src="#drawable/ic_launcher" />
</RelativeLayout>
AFTER THAT
android:background="#drawable/round_button"
android:src="#drawable/ic_sell"
android:background="#drawable/round_button"
android:src="#drawable/ic_cart"
PUT THIS LINE TO YOUR TWO IMAGE BUTTONS SURELY IT WILL WORK FOR YOU

One Linear layout is enough for this. Do not put your AmountMeterView into it's own LinearLayout.
Just make one Linear layout (vertical), and put all three elements in there. Gravity center_horizontal for all elements.

Try in this way hope this will help you
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1"
android:orientation="vertical" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1"
android:gravity="center"
android:orientation="vertical" >
<ImageButton
android:id="#+id/purchase"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:background="#drawable/round_button"
android:src="#drawable/ic_launcher" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1"
android:gravity="center"
android:orientation="vertical" >
<ImageButton
android:id="#+id/sell"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:background="#drawable/round_button"
android:src="#drawable/ic_launcher" />
</LinearLayout>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="2"
android:orientation="vertical" >
<com.example.mobile.view.AmountMeterView
android:id="#+id/mobileAmount"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:padding="4dp" />
</LinearLayout>
</LinearLayout>

Making a RelativeLayout fill the screen exactly

I have a RelativeLayout with several other children (other Layouts, imageviews and buttons).
All of the interior layouts/views adapt to the RelativeLayout in question. Can I make this RelativeLayout fill the screen exactly?
EDIT: My layout:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/container"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center_vertical|center_horizontal"
android:layout_gravity="center_vertical" >
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="center_vertical"
android:gravity="center_vertical"
android:orientation="vertical" >
<RelativeLayout
android:id="#+id/start_activity_relLayout_container"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_above="#+id/start_activity_relLayout_container_bottom"
android:gravity="center_horizontal"
android:layout_gravity="center_vertical" >
<RelativeLayout
android:id="#+id/relLayout_dialogfragment_image"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#+id/linLayout_imageview_container"
android:gravity="center_vertical" >
<ImageView
android:id="#+id/image"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/tutorial_thirdview"
android:text="#string/button_servicerequirement" />
</RelativeLayout>
</RelativeLayout>
<RelativeLayout
android:id="#+id/start_activity_relLayout_container_bottom"
android:layout_width="match_parent"
android:layout_height="30dp"
android:layout_marginTop="#dimen/two">
<LinearLayout
android:id="#+id/linearLayout1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true">
<Button
android:id="#+id/image_cancel"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/button_cancel"
style="#style/button_standard_bright_smaller"
android:layout_marginRight="3dp"/>
<Button
android:id="#+id/image_ok"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/button_ok"
android:layout_marginLeft="3dp"/>
</LinearLayout>
</RelativeLayout>
</LinearLayout>
</ScrollView>
</RelativeLayout>
EDIT 2:
I am setting the imageview dynamically btw.

Have you tried setting RelativeLayout's layoutWidth and layoutHeight properties to match_parent in your xml layout file?

Android center horizontal not working

I got this code, a linearlayout inside relativelayout... however its not centering horizontally... any idea why?
i want the linearlayout to be horizontall centered. i am filling it with images via code.
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<RelativeLayout
android:id="#+id/relative1"
android:layout_width="match_parent"
android:layout_height="0px"
android:layout_weight="10"
android:background="#color/list_background_pressed" >
<LinearLayout
android:id="#+id/linear1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:layout_centerHorizontal="true" >
</LinearLayout>
<TextView
android:id="#+id/text2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:text="HI! Welcome to My Zain"
android:textColor="#ffffff" />
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#id/text2"
android:layout_centerHorizontal="true"
android:paddingTop="20dp"
android:src="#drawable/ico_profile_1_64x64" >
</ImageView>
</RelativeLayout>
<RelativeLayout
android:id="#+id/relative2"
android:layout_width="match_parent"
android:layout_height="0px"
android:layout_weight="10" >
<TextView
android:id="#+id/text5"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:text="The new Recharge Mechanism"
android:textColor="#000000" />
</RelativeLayout>
</LinearLayout>

In the LinearLayout, try setting the layout_width to "wrap_content". Right now, you're stretching it to the full width of the window, so there's nothing to center.
android:layout_width="wrap_content"

add android:gravity="center"
<RelativeLayout
android:id="#+id/relative2"
android:layout_width="match_parent"
android:layout_height="0px"
android:gravity="center"
android:layout_weight="10" >

Android: Horizontal scrollview issue

I am facing layout issues while using the horizontal scrollview to scroll images with checkboxes
below is my layout
<HorizontalScrollView
android:layout_width="wrap_content"
android:layout_height="fill_parent"
>
<LinearLayout
android:id="#+id/mygallery"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
>
</LinearLayout>
</HorizontalScrollView>
i am using this scrollview in a listview which is in another layout
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/albumsearch"
android:layout_width="match_parent"
android:layout_height="fill_parent"
android:background="#FFFFFF"
android:orientation="vertical" >
<ListView
android:id="#+id/albumdetails"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="#FFFFFF"
android:paddingBottom="5dp" >
</ListView>
</LinearLayout>
below is the layout with my image and checkbox
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:orientation="vertical" >
<CheckBox
android:id="#+id/selectedImg"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBottom="#+id/icon"
android:layout_centerHorizontal="true"
android:layout_marginBottom="72dp"
android:layout_marginTop="20dp"
android:checked="true" />
<ImageView
android:id="#+id/icon"
android:layout_width="72dp"
android:layout_height="75dp"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true" />
</RelativeLayout>
but when i am running this code in small screen devices i can see only half image, how to get full image, any help is appreciated.

Solved: After Changing my layout with checkbox and imageview to linearlayout and used weight attribute
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="0dp"
android:gravity="left"
android:orientation="vertical"
android:layout_weight="1" >
<CheckBox
android:id="#+id/selectedImg"
android:layout_width="wrap_content"
android:layout_height="0dp"
android:checked="true"
android:layout_weight="1"
android:gravity="center" />
<ImageView
android:id="#+id/icon"
android:layout_width="72dp"
android:layout_height="0dp"
android:layout_weight="1"
android:gravity="center" />
</LinearLayout>

How to center a view using RelativeLayout?

I wanted to know how to center a View between two other views (or between a view and the parent edge) using RelativeLayout.
For example, if I have the following...
How do I vertically center the Button between the ImageView and the bottom of the screen using RelativeLayout?
I'm looking for a solution where...
the Button is not stretched in any way
there are no nested layouts
And I'm trying to do this in the XML layout (not programmatically).

You can use following:
<RelativeLayout
android:layout_below="#id/theImageView"
android:align_parentBottom="true"
android:layout_width="match_parent"
android:layout_height="200dp" >
<Button
android:id="#+id/btn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
android:onClick="onClickButton"
android:textSize="20sp"
android:text="Go"/>
</RelativeLayout>

There's unfortunately no easy way to do this. You can either nest layouts, or do it at runtime. The simplest way is to nest layouts:
<LinearLayout
android:width="match_parent"
android:height="match_parent"
android:orientation="vertical">
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/my_top_image"/>
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="0dip"
android:layout_weight="1">
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:text="#string/my_button_label"/>
</RelativeLayout>
</LinearLayout>
This puts the image at the top. Below that, the layout_height=0 and layout_weight=1 attributes on the RelativeLayout cause it to take up all the remaining space. You can then center the button in the RelativeLayout. You can play with padding on the button to get it to the size you want.

Use below XMl code for that, it will solve your problem.
<RelativeLayout 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" >
<LinearLayout
android:id="#+id/mLlayout1"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<ImageView
android:id="#+id/mImgView1"
android:layout_width="fill_parent"
android:layout_height="match_parent"
android:layout_weight="1"
android:src="#drawable/ic_launcher" />
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="match_parent"
android:layout_weight="2" >
<Button
android:id="#+id/Btn1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:text="Dipak" />
</RelativeLayout>
</LinearLayout>
</RelativeLayout>

use this android:layout_centerInParent="true" in XML file..
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:weightSum="1.0" >
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="0dip"
android:layout_weight="0.8"
android:background="#00ff00" >
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true" />
</RelativeLayout>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="0dip"
android:layout_weight="0.2" >
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:text="Button" />
</RelativeLayout>
</LinearLayout>

#Gus you can create center view between two other view... this is not exact you must try with
this way....
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content" >
<LinearLayout
android:id="#+id/linearLayout1"
android:layout_width="120dp"
android:layout_height="120dp"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true"
android:background="#00ccFF"
android:orientation="horizontal" >
</LinearLayout>
<LinearLayout
android:layout_width="59dp"
android:layout_height="59dp"
android:layout_alignRight="#+id/linearLayout1"
android:layout_alignTop="#+id/linearLayout1"
android:layout_marginRight="-21dp"
android:layout_marginTop="-21dp"
android:background="#FFccFF"
android:orientation="vertical" >
</LinearLayout>
</RelativeLayout>

I think what you just need is to allign the imageview as you would normally done and align the button using layout_below , no need for hardcoding nor using nested views use android:gravity="center" on the button you're done
<RelativeLayout
android:layout_below="#id/theImageView"
android:align_parentBottom="true"
android:layout_width="match_parent"
android:layout_height="200dp" >
<ImageView
android:id="#+id/imgview"
android:layout_width="match_parentmat"
android:layout_height="wrap_content" />
<Button
android:id="#+id/btn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#+id/imgview"
android:gravity="center"
android:onClick="onClickButton"
android:textSize="20sp"
android:text="Go"/>
</RelativeLayout>

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<ImageView
android:id="#+id/imageView1"
android:layout_width="300dp"
android:layout_height="300dp"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="20dp"
android:src="#drawable/wood" />
<Button
android:id="#+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="#+id/imageView1"
android:layout_below="#+id/imageView1"
android:layout_marginLeft="101dp"
android:layout_marginTop="53dp"
android:text="Image Button" />
</RelativeLayout>