Develop Reference

Two RelativeLayouts sharing screen width

I have two RelativeLayouts. Each of them has some content which is unknown width. I cant use LinearLayout and set layout_weight, because one of this RelativeLayout has android:layout_alignParentEnd="true" and I don't know if it will be enough for children in terms of width.
Code:
<RelativeLayout
android:id="#+id/header"
android:layout_width="match_parent"
android:layout_height="80dp"
android:paddingTop="#dimen/padding_small"
android:paddingBottom="#dimen/padding_small"
android:paddingStart="#dimen/padding_medium"
android:paddingEnd="#dimen/padding_medium"
android:background="#color/grey">
<RelativeLayout
android:id="#+id/firstLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_toStartOf="#id/secondLayout">
</RelativeLayout>
<RelativeLayout
android:id="#+id/secondLayout"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_alignParentEnd="true">
</RelativeLayout>
</RelativeLayout>
Expected result:
Reality:

Just give some specific width to the second layout instead of wrap_content like this I have given 100dp here
<RelativeLayout
android:id="#+id/header"
android:layout_width="match_parent"
android:layout_height="80dp"
android:paddingTop="#dimen/padding_small"
android:paddingBottom="#dimen/padding_small"
android:paddingStart="#dimen/padding_medium"
android:paddingEnd="#dimen/padding_medium"
android:background="#color/grey">
<RelativeLayout
android:id="#+id/firstLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_toStartOf="#id/secondLayout">
</RelativeLayout>
<RelativeLayout
android:id="#+id/secondLayout"
android:layout_width="100dp"
android:layout_height="match_parent"
android:layout_alignParentEnd="true">
</RelativeLayout>
</RelativeLayout>

If you want to make layout what you expect, there are many way.
for example, (only use LinearLayout and RelativeLayout)
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/header"
android:layout_width="match_parent"
android:layout_height="80dp"
android:background="#color/colorPrimary"
android:orientation="horizontal">
<LinearLayout
android:layout_width="match_parent"
android:orientation="vertical"
android:layout_height="match_parent"
android:layout_weight="1">
<RelativeLayout
android:layout_weight="1"
android:id="#+id/firstLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_toStartOf="#id/secondLayout"
android:background="#color/colorAccent" />
<TextView
android:layout_width="match_parent"
android:text="header"
android:background="#color/colorWhite"
android:layout_height="wrap_content"/>
</LinearLayout>
<RelativeLayout
android:id="#+id/secondLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_alignParentEnd="true"
android:layout_weight="2"
android:background="#color/colorPrimaryDark" />
</LinearLayout>
this xml can make this.

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/header"
android:layout_width="match_parent"
android:layout_height="80dp"
android:background="#858585"
android:paddingStart="8dp"
android:paddingTop="4dp"
android:paddingEnd="8dp"
android:paddingBottom="4dp">
<RelativeLayout
android:id="#+id/firstLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#66b35f"
android:layout_toStartOf="#id/secondLayout"/>
<RelativeLayout
android:id="#+id/secondLayout"
android:minWidth="120dp"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:background="#6e89c2"
android:layout_alignParentEnd="true"/>
</RelativeLayout>
You should use the parameter "android:minWidth="Xdp"
Then it looks like above.

Placing Textview on ImageView Compatible on each screensize

I have 2 images and 4 textviews and I want to place textviews on images my current work is like that.
I have to place 4 textview like 2. Image. Is there any way to make it without using DP because if i use DP when resolution changed looks terrible.
My current work is:
I want it to look like this:
My Activity Codet
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/container"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/grey"
tools:context=".MainActivity">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="300dp">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal">
<android.support.constraint.ConstraintLayout
android:layout_width="0dp"
android:layout_weight="1"
android:layout_height="match_parent">
<ImageView
android:layout_width="0dp"
android:layout_height="match_parent"
android:src="#drawable/solayak"
/>
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:text="Deneme"
android:gravity= "center"
/>
</android.support.constraint.ConstraintLayout>
<android.support.constraint.ConstraintLayout
android:layout_width="0dp"
android:layout_weight="1"
android:layout_height="match_parent">
<ImageView
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:src="#drawable/sagayak"
/>
</android.support.constraint.ConstraintLayout>
</LinearLayout>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="200dp"
android:layout_alignParentBottom="true"
android:layout_gravity="center"
android:gravity="center_vertical|center_horizontal"
android:orientation="vertical">
<ImageView
android:id="#+id/imageView2"
android:layout_width="match_parent"
android:layout_height="70dp"
app:srcCompat="#drawable/arti_buton_yeni" />
<ImageView
android:id="#+id/imageView3"
android:layout_width="match_parent"
android:layout_height="70dp"
app:srcCompat="#drawable/eksibutton_yeni" />
</LinearLayout>
<include
layout="#layout/bottomnavigation"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentStart="true"
android:layout_alignParentTop="true" />
</RelativeLayout>

Add small button on the upper right of imageview

Currently i have this layout:
https://imgur.com/a/Y2a67
this is the code for this layout:
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<HorizontalScrollView
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal">
<ImageView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_margin="5dp"
android:src="#drawable/img_docu_placeholder"/>
<ImageView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_margin="5dp"
android:src="#drawable/img_docu_placeholder"/>
<ImageView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_margin="5dp"
android:src="#drawable/img_docu_placeholder"/>
<ImageView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_margin="5dp"
android:src="#drawable/img_docu_placeholder"/>
<ImageView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_margin="5dp"
android:src="#drawable/img_docu_placeholder"/>
</LinearLayout>
</FrameLayout>
</HorizontalScrollView>
What i'm trying to achieve is:
https://imgur.com/a/MYxkh
where i need to add additional 'X' button on the upper left side of the imageview

You can use FrameLayout. Your icon must have android:layout_gravity attribute.
<FrameLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<ImageView
android:id="#+id/myImage"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="10dip"
android:src="#mipmap/ic_launcher"/>
<ImageView
android:id="#+id/imgX"
android:layout_width="20dp"
android:layout_height="20dp"
android:layout_gravity="top|left" //This line
android:src="#mipmap/ic_launcher_round" />
</FrameLayout>
Hope it helps.

Try this:
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="80dp"
android:layout_height="108dp"
android:background="#ffffff">
<ImageView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_margin="8dp"
android:background="#e6e6e6" />
<ImageView
android:layout_width="16dp"
android:layout_height="16dp"
android:src="#drawable/ic_cancel_black" />
Output:
Support multiple resolution:
Using this library: https://github.com/intuit/sdp
Create multiple layouts for each screen and using dp

how can make my xml images fit for all devices?

I'm new to designing of android, So I want my main screen images fit to all devices i want this MainScreen page fit to be in all devices. It has 3 images I have given weight but nothing seems to work if I test it on tab. Its not looking the way I want, here is the image
here is my XML .I know I should not give dp for height but how to make it look like that without giving sizes.
<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"
tools:context="com.example.zeba.broccoli.MainActivity" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1"
android:orientation="vertical"
android:layout_marginTop="50dp"
android:layout_alignParentTop="true"
android:layout_alignParentStart="true">
<LinearLayout
android:id="#+id/linearLayout1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:weightSum="1">
<ImageView
android:id="#+id/ms1"
android:layout_width="match_parent"
android:layout_height="374dp"
android:layout_weight="7"
android:scaleType="fitXY"
android:src="#drawable/avatar" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1"
>
<ImageView
android:id="#+id/ms2"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scaleType="fitXY"
android:src="#drawable/ee"
android:layout_weight=".5" />
<ImageView
android:id="#+id/ms3"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scaleType="fitXY"
android:src="#drawable/dd"
android:layout_weight=".5" />
</LinearLayout>
</LinearLayout>
</RelativeLayout>

Use this code:
<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">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1"
android:orientation="vertical">
<LinearLayout
android:id="#+id/linearLayout1"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="0.7">
<ImageView
android:id="#+id/ms1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scaleType="fitXY"
android:src="#mipmap/ic_launcher" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="0.3">
<ImageView
android:id="#+id/ms2"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight=".5"
android:scaleType="fitXY"
android:src="#mipmap/ic_launcher" />
<ImageView
android:id="#+id/ms3"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight=".5"
android:scaleType="fitXY"
android:src="#mipmap/ic_launcher" />
</LinearLayout>
</LinearLayout>
</RelativeLayout>
Hope this will help you

See following xml solution to get what you need.
You always can change relative width and height of the each view element by playing layout_weight parameter. Its like give width/height in percents :
<?xml version="1.0" encoding="utf-8"?>
<ImageView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:src="#android:drawable/btn_default"
android:scaleType="fitXY"
android:layout_weight="70"/>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:layout_weight="30">
<ImageView
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:src="#android:drawable/btn_default"
android:scaleType="fitXY"
android:layout_weight="1"/>
<ImageView
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:src="#android:drawable/btn_default"
android:scaleType="fitXY"
android:layout_weight="1"/>
</LinearLayout>

Dividing screen into two equal parts , can not set layout_weight

I guess question is silly, but I am missing something in this and want to understand.
I am dividing the screen into two equal parts. I know this can be done by setting weight. But I do not know why I can not set weight in Linear layout. Instead I am setting weightSum, but what I understood about weightSum is, it is space on screen left after setting width and height I guess.
here is what I am doing
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:background="#ffffff"
android:layout_height="match_parent"
android:id="#+id/main_panel">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/top"
android:weightSum="100">
<ListView
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:id="#+id/list"
android:divider="#null"
android:dividerHeight="0dp"
android:layout_marginTop="5dp"
android:layout_marginBottom="5dp"
android:layout_alignParentTop="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="#id/top"
android:weightSum="50"
android:layout_alignParentBottom="true"
android:id="#+id/ bottom">
<FrameLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/data"
android:orientation="vertical"
android:background="#D3D3D3"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true">
<View
android:id="#+id/drag_line"
android:layout_width="50dp"
android:visibility="visible"
android:background="#drawable/bar"
android:layout_gravity="center_horizontal|top"
android:layout_height="170dp"
android:src="#drawable/line" />
</FrameLayout>
</LinearLayout>
</RelativeLayout>
PS: I cannot set layout_weight property using android lollipop

Try with below code:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:background="#ffffff"
android:layout_height="match_parent"
android:id="#+id/main_panel">
<LinearLayout
android:layout_width="0dp"
android:layout_weight="1"
android:layout_height="match_parent"
android:id="#+id/top"
>
<ListView
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:id="#+id/list"
android:divider="#null"
android:dividerHeight="0dp"
android:layout_marginTop="5dp"
android:layout_marginBottom="5dp"
android:layout_alignParentTop="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true" />
</LinearLayout>
<LinearLayout
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_below="#id/top"
android:layout_weight="1"
android:layout_alignParentBottom="true"
android:id="#+id/ bottom">
<FrameLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/data"
android:orientation="vertical"
android:background="#D3D3D3"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true">
<View
android:id="#+id/drag_line"
android:layout_width="50dp"
android:visibility="visible"
android:background="#drawable/bar"
android:layout_gravity="center_horizontal|top"
android:layout_height="170dp"
android:src="#drawable/line" />
</FrameLayout>
</LinearLayout>
</RelativeLayout>

<LinearLayout
android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<Button
android:id="#+id/color_in_palette"
style="?android:attr/buttonStyleSmall"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#CCFFFF"
android:text="Button"
android:layout_weight="50"
android:textSize="0sp" />
<LinearLayout
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_weight="50">
<TextView
android:id="#+id/color_id"
android:layout_width="match_parent"
android:layout_height="50dp"
android:text="(204,255,255)"
android:gravity="center"
android:textAppearance="?android:attr/textAppearanceLarge" />
<GridView
android:id="#+id/gridView1"
android:layout_width="match_parent"
android:layout_height="0dp"
android:numColumns="13"
android:layout_weight="48" >
</GridView>
</LinearLayout>
</LinearLayout>
In this button will occupy the half of the screen , and the other half is occupied by another Linear Layout , which contains a TextView & GridView

Problem:
You cant add a weightSum within a Relative layout that it is only bounded to linearlayout layout params itself.
solution:
add another linearlayout inside your relatie layout as a parent to both of the inner linear layout.
sample:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:background="#ffffff"
android:layout_height="match_parent"
android:id="#+id/main_panel">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/parent"
android:weightSum="1">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/top"
android:weightSum="0.5">
<ListView
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:id="#+id/list"
android:divider="#null"
android:dividerHeight="0dp"
android:layout_marginTop="5dp"
android:layout_marginBottom="5dp"
android:layout_alignParentTop="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="#id/top"
android:weightSum="0.5"
android:layout_alignParentBottom="true"
android:id="#+id/ bottom">
<FrameLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/data"
android:orientation="vertical"
android:background="#D3D3D3"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true">
<View
android:id="#+id/drag_line"
android:layout_width="50dp"
android:visibility="visible"
android:background="#drawable/bar"
android:layout_gravity="center_horizontal|top"
android:layout_height="170dp"
android:src="#drawable/line" />
</FrameLayout>
</LinearLayout>
</LinearLayout>
</RelativeLayout>

Weightsum is property used by parent to find the total weight sum by its children.This property is only applicable to LinearLayout. Its childrens should specify its weight with width or height as 0dp. You can find the tutorial here. So your layout.xml will be
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/main_panel"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#ffffff"
android:orientation="vertical"
android:weightSum="100" >
<ListView
android:id="#+id/list"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_marginBottom="5dp"
android:layout_marginTop="5dp"
android:layout_weight="50"
android:divider="#null"
android:dividerHeight="0dp" />
<FrameLayout
android:id="#+id/data"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="50"
android:background="#D3D3D3"
android:orientation="vertical" >
<View
android:id="#+id/drag_line"
android:layout_width="50dp"
android:layout_height="170dp"
android:layout_gravity="center_horizontal|top"
android:visibility="visible" />
</FrameLayout>
</LinearLayout>

Get Root attribute always be <Relative> and with in that write your remaining XML code.
e.g.
<?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="0dp"
android:layout_weight="1"
android:background="#color/black">
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:background="#color/white">
</LinearLayout>
</LinearLayout>
//Replace above XML code by...
<?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">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:background="#color/black">
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:background="#color/white">
</LinearLayout>
</LinearLayout>
</RelativeLayout>