Develop Reference

Android ScrollView not scrolling at all

Below is my XML code, I want the whole view to scroll, but it's just not working, please help, with what's wrong;
<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<LinearLayout
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/app_icon"
android:layout_marginTop="20dp"
android:layout_gravity="center_horizontal"/>
<TextView
android:id="#+id/textView_app_version"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="20dp"
android:layout_gravity="center"/>
<TextView
android:id="#+id/textView_content"
android:layout_width="match_parent"
android:layout_marginTop="15dp"
android:layout_height="386dp"
android:gravity="center"></TextView>
</LinearLayout>
</ScrollView>
I've tried using,
android:fillViewport="true"
but of no help.

A ScrollView is a FrameLayout, meaning you should place one child in it containing the entire contents to scroll; this child may itself be a layout manager with a complex hierarchy of objects.
So here you have to take LinearLayout or RelativeLayout and then you have to put different hierarchy of component.
Android : buttons not visible in scrollview
here i have given answer of Some problem so you can follow this for solve your problem with clearing your concept.

Try like this ,Scrolling will work till End
<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">
<ScrollView
android:id="#+id/scrollView1"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/app_icon"
android:layout_marginTop="20dp"
android:layout_gravity="center_horizontal"/>
<TextView
android:id="#+id/textView_app_version"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="20dp"
android:layout_gravity="center"/>
<TextView
android:id="#+id/textView_content"
android:layout_width="match_parent"
android:layout_marginTop="15dp"
android:layout_height="386dp"
android:gravity="center"/>
</LinearLayout>
</ScrollView>
</Relativelayout>

If ScrollView fits to your device screen it would not be scrollable, so make sure content inside ScrollView takes space larger than your screen size.

systematix Try this,here you getting scroll.
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:layout_marginTop="20dp"
android:src="#mipmap/ic_launcher" />
<TextView
android:id="#+id/textView_app_version1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginTop="20dp"
android:text="hello" />
<TextView
android:id="#+id/textView_content"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="15dp"
android:gravity="center"
android:text="fahfhahffshfs fsfhshf fshfs sflshf sflsh fhsfhslfh fshflshf hslfh slfhslfhslfhs fhslhf"></TextView>
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:layout_marginTop="20dp"
android:src="#mipmap/ic_launcher" />
<TextView
android:id="#+id/textView_app_version"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginTop="20dp"
android:text="hello" />
<TextView
android:id="#+id/textView_content1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="15dp"
android:gravity="center"
android:text="fahfhahffshfs fsfhshf fshfs sflshf sflsh fhsfhslfh fshflshf hslfh slfhslfhslfhs fhslhf"></TextView>
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:layout_marginTop="20dp"
android:src="#mipmap/ic_launcher" />
<TextView
android:id="#+id/textView_app_version2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginTop="20dp"
android:text="hello" />
<TextView
android:id="#+id/textView_content3"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="15dp"
android:gravity="center"
android:text="fahfhahffshfs fsfhshf fshfs sflshf sflsh fhsfhslfh fshflshf hslfh slfhslfhslfhs fhslhf"></TextView>
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:layout_marginTop="20dp"
android:src="#mipmap/ic_launcher" />
<TextView
android:id="#+id/textView_app_version4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginTop="20dp"
android:text="hello" />
<TextView
android:id="#+id/textView_content4"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="15dp"
android:gravity="center"
android:text="fahfhahffshfs fsfhshf fshfs sflshf sflsh fhsfhslfh fshflshf hslfh slfhslfhslfhs fhslhf"></TextView>
</LinearLayout>

Android: align labels and buttons in multiple lines

I go nuts on that layout. So here's what I'm trying to achieve. A simple layout having a label (TextView) or edit field (EditText) on the left side and a button on the right side. I want all labels and all buttons vertically adjusted - meaning all buttons of the same width and all labels too.
But how to do this? I tried a LinearLayout with vertical orientation and each line as another LinearLayout with horizontal orientation and inside that the label has a layout_weight of 8 and the button is 1. But still this does not guarantee what I want!
This is the current result. You can see that the buttons are not nicely aligned.
This is my layout:
Here's the XML:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<EditText
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:gravity="center_vertical"
android:hint="test_test_blabla"
android:layout_weight="8"
android:textSize="24sp"
android:fontFamily="sans-serif-thin"
android:layout_gravity="left"
/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:hint="#string/action_scan"
android:textSize="24sp"
android:fontFamily="sans-serif-thin"
android:layout_weight="1"
android:layout_gravity="right"
/>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<TextView
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:gravity="center_vertical"
android:text="17:35"
android:layout_weight="8"
android:textSize="24sp"
android:fontFamily="sans-serif-thin"
android:layout_gravity="left"
/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:hint="#string/action_pick_time"
android:textSize="24sp"
android:fontFamily="sans-serif-thin"
android:layout_weight="1"
android:layout_gravity="right"
/>
</LinearLayout>
</LinearLayout>

Using a RelativeLayout you can achieve the desired layout as:
<?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="vertical">
<EditText
android:id="#+id/editText"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignRight="#+id/textView"
android:layout_toLeftOf="#+id/button"
android:fontFamily="sans-serif-thin"
android:hint="test_test_blabla"
android:textSize="24sp"/>
<Button
android:id="#+id/button"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_toRightOf="#+id/textView"
android:fontFamily="sans-serif-thin"
android:hint="Scan"
android:textSize="24sp"/>
<TextView
android:id="#+id/textView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignBaseline="#+id/button2"
android:layout_alignParentLeft="true"
android:layout_below="#+id/editText"
android:layout_toLeftOf="#+id/button2"
android:fontFamily="sans-serif-thin"
android:text="17:35"
android:textSize="24sp"/>
<Button
android:id="#+id/button2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_below="#+id/button"
android:fontFamily="sans-serif-thin"
android:hint="Pick Time"
android:textSize="24sp"/>
</RelativeLayout>
The key layout attribute used to match the size is android:layout_alignRight="#+id/textView" on the first EditText referencing the TextView just below.
Result:

According to people's advise, I used the TableLayout. But still the label (EditText) is not using the whole space til the button.
That's the XML:
<?xml version="1.0" encoding="utf-8"?>
<TableLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:stretchColumns="1">
<TableRow>
<EditText
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:gravity="center_vertical"
android:hint="test_test_blabla"
android:textSize="24sp"
android:fontFamily="sans-serif-thin"
android:layout_gravity="left"
/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:hint="#string/action_scan"
android:textSize="24sp"
android:fontFamily="sans-serif-thin"
android:layout_gravity="right"
/>
</TableRow>
<TableRow>
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center_vertical"
android:text="17:35"
android:textSize="24sp"
android:fontFamily="sans-serif-thin"
android:layout_gravity="left"
/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:hint="#string/action_pick_time"
android:textSize="24sp"
android:fontFamily="sans-serif-thin"
android:layout_gravity="right"
/>
</TableRow>
<TableRow>
<EditText
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center_vertical"
android:hint="#string/hint_car_location_address"
android:textSize="24sp"
android:fontFamily="sans-serif-thin"
android:layout_gravity="left"
/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:hint="#string/action_gps"
android:textSize="24sp"
android:fontFamily="sans-serif-thin"
android:layout_gravity="right"
/>
</TableRow>
</TableLayout>

Edit:
try RelativeLayout
something like this:
<?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:columnCount="2">
<EditText
android:id="#android:id/text1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_toLeftOf="#android:id/button1"
android:text="test"/>
<Button
android:id="#android:id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:paddingLeft="28dp"
android:paddingRight="28dp"
android:text="set"
/>
<TextView
android:id="#android:id/text2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_toLeftOf="#android:id/button1"
android:layout_alignBottom="#android:id/button2"
android:layout_below="#android:id/button1"
android:gravity="center_vertical"
android:text="some test"/>
<Button
android:id="#android:id/button2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#android:id/button1"
android:layout_alignLeft="#android:id/button1"
android:layout_alignRight="#android:id/button1"
android:text="Scan"
/>
</RelativeLayout>

5+ years later...OP is probably an expert in android xml by now. Nevertheless, to help with the question, linear layout is doable. I've added another linear layout to contain all the rows so that the margins can be adjust in this additional layout.
When weight sum is used, the corresponding variable (width / height) has to be 0dp so that it can be adjust accordingly.
<?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">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="left"
android:orientation="vertical"
android:weightSum="2">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:orientation="horizontal"
android:weightSum="9">
<EditText
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="8"
android:fontFamily="sans-serif-thin"
android:hint="test_test_blabla"
android:textSize="24sp" />
<Button
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:fontFamily="sans-serif-thin"
android:hint="#string/action_scan"
android:textSize="24sp" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:gravity="left"
android:orientation="horizontal"
android:weightSum="9">
<TextView
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="8"
android:fontFamily="sans-serif-thin"
android:text="17:35"
android:textSize="24sp" />
<Button
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:fontFamily="sans-serif-thin"
android:hint="#string/action_pick_time"
android:textSize="24sp" />
</LinearLayout>
</LinearLayout>
</LinearLayout>

ScrollView with sub RelativeLayout does not scroll

I have a ScrollView with 1 RelativeLayout which has 3 sub RelativeLayouts:
I set top RelativeLayout to alignParentTop="true",
The bottom RelativeLayout to alignParentBottom="true".
The middle layout to
android:layout_below="#id/topLayout"
android:layout_above="#+id/bottomLayout"
Problem: Scrollview does not scroll when screen is small, instead topLayout stays at top and bottomLayout stays at the bottom. The middle layout gets small and (even lost) as like below:
Desired: I want topLayout stay at top and bottomLayout stay at bottom. But when there is no space there must be scroll so they middle layout must not get lost.
Code:
<?xml version="1.0" encoding="utf-8"?>
<ScrollView
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="#color/white"
tools:context="com.jemshit.itu.fragments.TakeAttendanceFragment"
android:fillViewport="true">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/white"
android:paddingBottom="#dimen/halfClassic"
android:paddingLeft="#dimen/halfClassic"
android:paddingRight="#dimen/halfClassic"
android:paddingTop="#dimen/halfClassic">
<RelativeLayout
android:id="#+id/layoutWeekChoice"
android:layout_height="wrap_content"
android:layout_width="match_parent"
android:padding="0dp"
android:background="#color/white"
android:layout_alignParentTop="true">
<Spinner
android:id="#+id/spinnerWeekChoice"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:minHeight="50dp"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_alignParentTop="true"
android:layout_toLeftOf="#+id/buttonSetDate"
android:layout_toStartOf="#+id/buttonSetDate"
/>
<Button
android:id="#+id/buttonSetDate"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="16dp"
android:maxWidth="150dp"
android:textSize="16sp"
android:text="Set Date"
android:gravity="center"
android:textColor="#color/white"
android:textAllCaps="false"
android:background="#drawable/button_background"
android:paddingLeft="#dimen/halfClassic"
android:paddingRight="#dimen/halfClassic"
android:layout_alignBottom="#+id/spinnerWeekChoice"
android:layout_alignParentTop="true"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true" />
</RelativeLayout>
<RelativeLayout
android:id="#+id/layoutCardRead"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#color/white"
android:gravity="center"
android:layout_marginTop="32dp"
android:layout_below="#id/layoutWeekChoice"
android:layout_above="#+id/layoutShowAttendance"
android:layout_centerHorizontal="true">
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/imageCard"
android:src="#drawable/std_card"
android:layout_alignParentTop="true"
android:layout_marginBottom="16dp"
android:layout_centerHorizontal="true"/>
<TextView
android:id="#+id/textWarningCard"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Checking..."
android:textColor="#color/black"
android:textSize="14sp"
android:layout_below="#+id/imageCard"
android:layout_centerHorizontal="true"
/>
</RelativeLayout>
<RelativeLayout
android:id="#+id/layoutShowAttendance"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:paddingBottom="#dimen/halfClassic"
android:background="#color/white"
android:layout_alignParentBottom="true">
<TextView
android:id="#+id/textAttended"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Attended: "
android:textColor="#color/black"
android:layout_alignParentTop="true"
android:textSize="16sp"/>
<TextView
android:id="#+id/textNotAttended"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Not Attended: "
android:textColor="#color/black"
android:textSize="16sp"
android:layout_marginBottom="32dp"
android:layout_below="#+id/textAttended"/>
<Button
android:id="#+id/buttonManualAttendance"
android:layout_width="wrap_content"
android:layout_centerHorizontal="true"
android:layout_height="wrap_content"
android:text="Manual Attendance"
android:gravity="center"
android:textAllCaps="false"
android:textSize="16sp"
android:textColor="#color/white"
android:background="#drawable/button_background"
android:minHeight="50dp"
android:layout_below="#id/textNotAttended"
android:paddingLeft="#dimen/halfClassic"
android:paddingRight="#dimen/halfClassic"/>
</RelativeLayout>
</RelativeLayout>
</ScrollView>
Note: I do not want to use LinearLayout with weight="1" which will make my 3 layouts same height
EDIT: now ScollView scrolls with new code below but my bottom TextViews get lost:
Code Updated:
<?xml version="1.0" encoding="utf-8"?>
<ScrollView
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="#color/white"
tools:context="com.jemshit.itu.fragments.TakeAttendanceFragment"
android:fillViewport="true">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#color/white"
android:paddingBottom="#dimen/halfClassic"
android:paddingLeft="#dimen/halfClassic"
android:paddingRight="#dimen/halfClassic"
android:paddingTop="#dimen/halfClassic">
<RelativeLayout
android:id="#+id/layoutWeekChoice"
android:layout_height="wrap_content"
android:layout_width="match_parent"
android:padding="0dp"
android:background="#color/white"
android:layout_alignParentTop="true">
<Spinner
android:id="#+id/spinnerWeekChoice"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:minHeight="50dp"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_alignParentTop="true"
android:layout_toLeftOf="#+id/buttonSetDate"
android:layout_toStartOf="#+id/buttonSetDate"
/>
<Button
android:id="#+id/buttonSetDate"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="16dp"
android:maxWidth="150dp"
android:textSize="16sp"
android:text="Set Date"
android:gravity="center"
android:textColor="#color/white"
android:textAllCaps="false"
android:background="#drawable/button_background"
android:paddingLeft="#dimen/halfClassic"
android:paddingRight="#dimen/halfClassic"
android:layout_alignBottom="#+id/spinnerWeekChoice"
android:layout_alignParentTop="true"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true" />
</RelativeLayout>
<RelativeLayout
android:id="#+id/layoutCardRead"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#color/white"
android:gravity="center"
android:layout_marginTop="32dp"
android:layout_below="#id/layoutWeekChoice"
android:layout_centerHorizontal="true">
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/imageCard"
android:src="#drawable/std_card"
android:layout_alignParentTop="true"
android:layout_marginBottom="16dp"
android:layout_centerHorizontal="true"/>
<TextView
android:id="#+id/textWarningCard"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Checking..."
android:textColor="#color/black"
android:textSize="14sp"
android:layout_below="#+id/imageCard"
android:layout_centerHorizontal="true"
/>
</RelativeLayout>
<RelativeLayout
android:id="#+id/layoutShowAttendance"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:paddingBottom="#dimen/halfClassic"
android:background="#color/white"
android:layout_below="#id/layoutCardRead"
android:layout_alignParentBottom="true">
<TextView
android:id="#+id/textAttended"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Attended: "
android:textColor="#color/black"
android:layout_above="#+id/textNotAttended"
android:textSize="16sp"/>
<TextView
android:id="#+id/textNotAttended"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Not Attended: "
android:textColor="#color/black"
android:textSize="16sp"
android:layout_marginBottom="32dp"
android:layout_above="#+id/buttonManualAttendance" />
<Button
android:id="#+id/buttonManualAttendance"
android:layout_width="wrap_content"
android:layout_centerHorizontal="true"
android:layout_height="wrap_content"
android:text="Manual Attendance"
android:gravity="center"
android:textAllCaps="false"
android:textSize="16sp"
android:textColor="#color/white"
android:background="#drawable/button_background"
android:minHeight="50dp"
android:layout_alignParentBottom="true"
android:paddingLeft="#dimen/halfClassic"
android:paddingRight="#dimen/halfClassic"/>
</RelativeLayout>
</RelativeLayout>
</ScrollView>

Set your parents RelativeLayout height to wrap_content. Match_parent needs only ScrollView, everything inside it can spend all the space it needs.

From your 2nd relative layout,that is layoutcard remove android:layout_above="#+id/layoutShowAttendance"
and from layoutShowAttendance remove
android:layout_alignParentBottom="true"
and add android:layout_below="#+id/layoutCardRead" to layoutShowAttendance
It will work.

Alignment of two Relative layout within a main relative layout

<RelativeLayout
android:id="#+id/OtherWeatherInfo_main"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="#dimen/margin_space"
android:layout_marginLeft="#dimen/margin_space"
android:layout_marginRight="#dimen/margin_space" >
<RelativeLayout
android:id="#+id/OtherWeatherInfo"
android:layout_width="#dimen/weather_space"
android:layout_height="wrap_content"
android:layout_centerVertical="true"
android:gravity="center_vertical"
android:layout_alignParentLeft="true"
android:background="#drawable/rect_block" >
<LinearLayout
android:id="#+id/humidityLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >
<TextView
android:id="#+id/humidityTitle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:text="#string/str_humidity"
android:textSize="#dimen/weather_size"
android:textStyle="bold" >
</TextView>
<TextView
android:id="#+id/humidityValue"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:text="#string/str_no_data"
android:textColor="#color/color_white"
android:textStyle="bold" >
</TextView>
</LinearLayout>
</RelativeLayout>
<RelativeLayout
android:id="#+id/OtherWeatherInfo2"
android:layout_width="#dimen/weather_space"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:layout_alignParentRight="true"
android:layout_centerVertical="true"
android:gravity="center_vertical"
android:layout_toRightOf="#+id/OtherWeatherInfo"
android:background="#drawable/rect_block" >
<LinearLayout
android:id="#+id/visiLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >
<TextView
android:id="#+id/visiTitle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:text="#string/str_visi"
android:textSize="#dimen/weather_size"
android:textStyle="bold" />
<TextView
android:id="#+id/visiValue"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:text="#string/str_no_data"
android:textColor="#color/color_white"
android:textStyle="bold" />
</LinearLayout>
</RelativeLayout>
</RelativeLayout>
The above code is written by me to achieve the following figure:.But what I am achieving is this: or this:.
I have absolutely no clue about what is the mistake I am doing here??I am just using a main relative layout
OtherWeatherInfo_main and within that I am embedding two relative layouts to represent the two weather attributes. #dimen/weather_space is 145 dp.I am unable to align the two relative layout within the main layout equally.Any help will be appreciated.

Wrap the two RelativeLayouts inside a LinearLayout with horizontal orientation and then assign both the RelativeLayouts equal weight.
In general, something like this:
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:weightSum="1" >
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:weight="0.5" />
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:weight="0.5" />
</LinearLayout>

Remove either this
android:layout_alignParentRight="true"
or this
android:layout_toRightOf="#+id/OtherWeatherInfo"
from your second layout.
Also you can wrap both your RelativeLayouts to the horizontal LinearLayout and use android:layout_weight attribute

Try this way,if you wan achieved your design using LinearLayout.
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:gravity="center">
<TextView
android:id="#+id/txtCityName"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Kolkata"/>
<ImageView
android:id="#+id/imgWeather"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/ic_launcher"
android:layout_marginTop="20dp"/>
<TextView
android:id="#+id/txtTemprature"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="28 C"
android:layout_margin="10dp"/>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="20dp">
<LinearLayout
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:orientation="vertical"
android:gravity="center">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Humidity"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="29"/>
</LinearLayout>
<LinearLayout
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:orientation="vertical"
android:layout_marginLeft="20dp"
android:gravity="center">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Humidity"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="29"/>
</LinearLayout>
</LinearLayout>
<TextView
android:id="#+id/txtDateTime"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Fri 28"
android:layout_margin="10dp"/>
</LinearLayout>

why is my relativeLayout doesn't appear below its sibling linearLayout?

I have the following xml
<?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="wrap_content"
android:background="#color/blue_bg">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center_horizontal"
android:orientation="vertical" >
<com.my.view.text.MyTextView
android:id="#+id/whyResgisterHeaderText"
style="#style/textOnBg"
android:layout_marginTop="25dp"
android:text="WHY REGISTER?"
android:textStyle="bold" />
<com.my.view.text.MyTextView
android:id="#+id/whyResgisterBodyText"
style="#style/textOnBg"
android:text="Help us keep your account safe"
android:textStyle="normal" />
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="10dp"
android:layout_marginTop="5dp"
android:src="#drawable/signup_illu_why" />
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center" >
<Button
android:id="#+id/gotItButton"
android:layout_width="250dp"
android:layout_height="50dp"
android:layout_gravity="center"
android:layout_marginTop="5dp"
android:background="#drawable/btn_selector"
android:padding="0dp" />
<com.my.view.text.MyTextView
android:id="#+id/gotItText"
style="#style/textOnBg"
android:layout_marginTop="25dp"
android:text="Got it"
android:textColor="#00bcfe"
android:textSize="16dp"
android:textStyle="italic" />
</RelativeLayout>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:orientation="vertical" >
<View
android:layout_width="match_parent"
android:layout_height="1dp"
android:background="#70a5b3" />
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<com.my.view.text.MyTextView
style="#style/textOnBg"
android:layout_toLeftOf="#+id/skipIcon"
android:text="Skip"
android:textStyle="normal" />
<ImageView
android:id="#id/skipIcon"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:src="#drawable/signup_skip_icon" />
</RelativeLayout>
</LinearLayout>
</RelativeLayout>
I want my screen to look like:
but it looks like:
1) why cannot I see the fotter relativeLayout (with the "skip")
2) how can I center the gotItText textView? why isn't it center with current properties?

Because your root layout is a RelativeLayout.
You should declare an ID for the first LinearLayout, and then use layout_below property on the second one. Remember, their positions are relatives so if you don't specify the location of the second Linear, it will be paint over the first one.
If you want to get one linear below the other automatically use a LinearLayout as main root.

Edited you code, replaced the custom EditTexts, and removed the styles, set new heights to the layout and it seems to be working as you want.
<?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="wrap_content">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center_horizontal"
android:orientation="vertical" >
<TextView
android:id="#+id/whyResgisterHeaderText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="25dp"
android:text="WHY REGISTER?"
android:textStyle="bold" />
<TextView
android:id="#+id/whyResgisterBodyText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Help us keep your account safe"
android:textStyle="normal" />
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="10dp"
android:layout_marginTop="5dp" />
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center" >
<Button
android:id="#+id/gotItButton"
android:layout_width="250dp"
android:layout_height="50dp"
android:layout_gravity="center"
android:layout_marginTop="5dp"
android:padding="0dp" />
<TextView
android:id="#+id/gotItText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="25dp"
android:text="Got it"
android:textColor="#00bcfe"
android:textSize="16dp"
android:textStyle="italic" />
</RelativeLayout>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:orientation="vertical" >
<View
android:layout_width="match_parent"
android:layout_height="1dp"
android:background="#70a5b3" />
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_toLeftOf="#+id/skipIcon"
android:text="Skip"
android:textStyle="normal" />
<ImageView
android:id="#id/skipIcon"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true" />
</RelativeLayout>
</LinearLayout>
</RelativeLayout>