Develop Reference

why the design of user interface change in different emulator in android studio?

I'm begin to learning android programming and I did not know much about this language
I write a program. I do not know why when I see my user interface it is good but when I run it with different emulators , each emulator show it in different way
enter code here : <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
android:layout_height="match_parent" android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
android:paddingBottom="#dimen/activity_vertical_margin" tools:context="com.example.faezeh.homework2.MainActivity"
android:orientation="vertical"
>
<TextView android:text="تمرین دوم"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:textSize="50sp"
android:textColor="#ff4400"
android:paddingTop="30dp"
/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="مدیریت یادداشت"
android:layout_gravity="center_horizontal"
android:textSize="40sp"
android:textColor="#000000"
android:paddingTop="30dp"
/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="تاریخ : 1393/12/26"
android:layout_gravity="center_horizontal"
android:textSize="40sp"
android:textColor="#000000"
android:paddingTop="30dp"
/>
<Button
android:id="#+id/theList"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="فهرست یادداشت ها"
android:textSize="30sp"
android:textColor="#000000"
android:background="#00ffff"
android:layout_gravity="center_horizontal"
android:layout_marginTop="30dp"
/>
<Button
android:id="#+id/search"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="جستجوی یادداشت "
android:textSize="30sp"
android:textColor="#000000"
android:background="#00ffff"
android:layout_marginTop="10dp"
android:layout_gravity="center_horizontal"
/>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal"
android:gravity="bottom"
>
<Button
android:id="#+id/aboutUs"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="درباره ما"
android:textSize="35sp"
android:textColor="#000000"
android:background="#00ffff"
android:layout_gravity="left|bottom"
/>
<Button
android:id="#+id/setting"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="تنظیمات"
android:textSize="35sp"
android:textColor="#000000"
android:background="#00ffff"
android:layout_gravity="right|bottom"
/>
</LinearLayout>

try to see this thing in your eclipse then your user interface will never change.
you can convert Activity check at here is schreen size 15 schreen sizes are given here to check all android device follow these size once

Since android is available for various types of devices, here I am saying the screen size of the device. So every device comes under certain category with their corresponding screen size, these category are probably LDPI, MDPI, HDPI, XHDPI and XXHDPI. So the design we do usually varies among different screen size.
For detail information regarding the multiple screen size in android and how to handle it, do visit:
http://developer.android.com/guide/practices/screens_support.html
what i have to do to fix this? for example nexus one and nexus 5 show
my program in different way . what i have to do to both of them show
it in right way? – faezeh 1 hour ago
Well for this case you have to particularly design your screens in such a way that it optimize all the screen size. For this here are some key design parameters you should look on:
use textAppearnce instead of textSize property like :
android:textAppearance="?android:attr/textAppearanceLarge"
Try to hard code your controls specially buttons, as dp automatically resize according to the screen size of device.
Try to use layout_weight property in your design.
If you follow this basic guideline, then there will be no problem.
Cheers

How to achieve this kind of layout in Android

I'm new to Android development and I'm trying to achieve a layout for my app that is capable of handling different screen resolutions/ratios.
I've been reading a lot of the documentation and questions on this site to try to understand the basics and concepts.
First I went through:
developer.android.com/guide/practices/screens_support.html
And questions like:
stackoverflow.com/questions/6403619/how-to-support-all-the-different-resolutions-of-android-products
I've got a pretty basic idea on how to handle things out. But still, its pretty difficult for a starter to get going, and I found myself stucked trying to achieve the solution I came up with.
I designed my app to a target resolution of 480x800, and set it up to always show in portrait mode.
This is how it looks like and how I understand it should work (I used Waldo for the sake of example haha):
(sorry for the link, I need 10 rep to post images)
http://i.imgur.com/KXTAXir.jpg
My root Layout is a LinearLayout, wich contains 3 other Layouts being A and C set up to a weight of 0.8 while B is at 8.4. This is all fine, but the contents of B are set up to DP units at the moment just to be able to test.
B consists of a frame Layout who has 3 other Layouts inside, where 2 of them are working fine, and shown only when needed. The problem is that I need B to be able to adapt based on the contents of it first child: a LinearLayout wich contains 2 ImageView and 1 ProgressBar. I need that those ImageView always keep their ratio.
Here is an example of how it should work:
http://i.imgur.com/cH7fUze.jpg
Imagine those 4 are real screens, wich vary in ratio and size. So my app should only adapt B (from my first image) to keep the images original ratio.
Here is the layout code:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/darkgray"
android:orientation="vertical" >
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="0.8"
android:background="#666666" >
<TextView
android:id="#+id/level_text_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_centerVertical="true"
android:text="LEVEL"
android:textAppearance="?android:attr/textAppearanceSmall" />
<TextView
android:id="#+id/level_text_score"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
android:text="SCORE"
android:textAppearance="?android:attr/textAppearanceMedium" />
<TextView
android:id="#+id/level_text_clock"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_centerVertical="true"
android:text="01:59"
android:textAppearance="?android:attr/textAppearanceSmall" />
</RelativeLayout>
<FrameLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="8.4" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >
<ImageView
android:id="#+id/imageView1"
android:layout_width="match_parent"
android:layout_height="200dp"
android:adjustViewBounds="true" />
<ProgressBar
android:id="#+id/progressBar1"
style="?android:attr/progressBarStyleHorizontal"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:max="1000"
android:progress="0" />
<ImageView
android:id="#+id/imageView2"
android:layout_width="match_parent"
android:layout_height="200dp"
android:adjustViewBounds="true" />
</LinearLayout>
<RelativeLayout
android:id="#+id/pauseMask"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#000000"
android:visibility="gone" >
</RelativeLayout>
<RelativeLayout
android:id="#+id/gameoverMask"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#FFFFFF"
android:visibility="gone" >
</RelativeLayout>
</FrameLayout>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="0.8"
android:background="#666666" >
<TextView
android:id="#+id/level_text_status"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_centerVertical="true"
android:text="0/0"
android:textAppearance="?android:attr/textAppearanceMedium" />
<Button
android:id="#+id/button1"
style="?android:attr/buttonStyleSmall"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_centerVertical="true"
android:text="Button"
android:onClick="useHint" />
<Button
android:id="#+id/button2"
style="?android:attr/buttonStyleSmall"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_toLeftOf="#+id/button1"
android:layout_centerVertical="true"
android:text="Button"
android:onClick="toggleSound" />
<Button
android:id="#+id/button3"
style="?android:attr/buttonStyleSmall"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_toLeftOf="#+id/button2"
android:layout_centerVertical="true"
android:text="Button"
android:onClick="togglePause" />
</RelativeLayout>
The last thing that stays unclear to me is how to handle the text and button sizes. Should I set them in DPs? How do I get them to scale accordingly like it can be seen on the bottom of my second picture.
Thank you for your help, I also want this to serve as an example to others that are having trouble to understand how to handle this kind of scenarios.

I'm not sure, if I got your question right.
However, you can specify different layouts for different screen sizes and orientations, as described here: http://developer.android.com/guide/practices/screens_support.html
Just give the respective suffix in the name of your layout XML file.

I ended up creating a custom View for my images. The view calculates the space thats left on its parent, scales the images manually and then resizes itself to the same size of the resulting image.
To resize the progress bar to have the same width as the images, I used a custom listener that gets triggered when my custom views get resized. Then I resize the progressbar to match their width.
With this I achieved what I wanted, a layout that will work perfectly in all screen sizes.

Scaleable size of application with non 9-patch buttons

I'm currently learning android development, and before I get too stuck in to a large project, I decided I would need to learn about making an application accessible from as many devices as possible.
So I have a test application using RelativeLayout. The top-level activity has 6 large menu buttons on it. These buttons are square graphical images (not 9-patch buttons as they are - to my knowledge - too graphically primitive). On the device I'm using for testing, these buttons appear in a perfect 2x3 arrangement like such:
However, when I try and run this application on a larger device, the buttons will appear like so:
Is there a way to scale non-9-patch buttons based on the size of the screen, so that they will always appear like the first image? Is this recommended? If not, is there an alternative way of doing such a layout for different screen sizes?
My ideal layout would be scalable across different devices, like so:

I am using similar menu. And here is first row of it. The buttons in this menu has labels too.
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="20dip"
android:layout_marginRight="20dip"
android:gravity="center" >
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="5dip" >
<Button
android:id="#+id/screen_home_btn_profile"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#drawable/selector_ic_my_profile" />
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:paddingBottom="5dip" >
<TextView
style="#style/label_text_style_home_screen"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/screen_home_label_my" />
<TextView
style="#style/label_text_style_home_screen"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/screen_home_label_profile"
android:textStyle="bold" />
</LinearLayout>
</RelativeLayout>
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="5dip" >
<Button
android:id="#+id/screen_home_btn_application"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#drawable/selector_ic_my_application" />
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:paddingBottom="5dip" >
<TextView
style="#style/label_text_style_home_screen"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/screen_home_label_my" />
<TextView
style="#style/label_text_style_home_screen"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/screen_home_label_application"
android:textStyle="bold" />
</LinearLayout>
</RelativeLayout>
</LinearLayout>
It seems you are giving outer margins to the buttons. Align them in center and give spaces between 2 buttons and not the screen border & buttons.

Margin dp unit not scale layout correctly in differents screens

I have simple tableLayout which show the problem with independent unit dp.
I suppose that with dp unit in my layout_margin attribute - layout will be resized without problem on any device.
<TableLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_gravity="center"
android:gravity="center"
android:layout_margin="40dp"
>
<TableRow android:layout_width="fill_parent" android:layout_height="wrap_content">
<TextView
android:text="#string/start_login_username"
android:id="#+id/start_login_username"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
/>
<EditText
android:id="#+id/start_login_EditTxt1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:inputType="textEmailAddress"
/>
</TableRow>
<TableRow android:layout_width="fill_parent" android:layout_height="wrap_content">
<TextView
android:text="#string/start_login_password"
android:id="#+id/start_login_password"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
</TextView>
<EditText
android:id="#+id/start_login_EditTxt2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:inputType="textPassword"
/>
</TableRow>
<TableRow android:layout_width="fill_parent" android:layout_height="wrap_content">
<Button android:text="#string/start_login_cancel"
android:id="#+id/start_login_cancel"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
>
</Button>
<Button
android:text="#string/start_login_login"
android:id="#+id/start_login_ButtonLogin"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
>
</Button>
</TableRow>
</TableLayout>
But, testing this layout, we can see that dp is not so independent in layout margin .
Here the screenshot in Samsung Nexus(Good scale):
Here the screenshot in LG Optimus GT 540(Bad scale):
Im looking the similar threads in StackOverflow, and possible solution, to have correct scale on any screen is:
Not use margin and padding at all, but use always tableLayout and add
moc Views with some weight, to add space between Views(not good because of
pollution of xml layouts. Anyway, its looks promising ).
Make my own calculation of independent unit, and rescale all programmatically (not good for me because I have all in xml's)
Use different layouts for differents screens (not good because Im too lazy to recreate the layout for each my view and supporting them)
Questions:
How can I solve the problem with scaling of my layout for all screens using the same layout ?
How I can make margin works correct on my screens ?
What you think about my two solutions. This is good practice ? (specially first one) ?
Thanks

Simply use linearlayout with weight attributes, remember to set width="0dp" if it is the width you want to be automatically adjusted.
Your xml should be something like this:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:orientation="horizontal" >
<TextView
android:text="Your name"
android:layout_weight="1"
android:layout_width="0dp"
android:layout_height="wrap_content" />
<EditText
android:layout_weight="1"
android:layout_width="0dp"
android:minWidth="80dp"
android:layout_height="wrap_content" />
</LinearLayout>

One game layout

I want to make a match game layout in android.
I'm having problem with making my layout compitable to all screen resolutions.
What I want, is an image icon of the home team on the left, a strechable home team image name, home team score text, seperator, away team score text, a strechable away team image name, an image icon of the away team on the right.
The score should be in the middle. I just can't get it right. before this try, I've tried to divide the main layout to 3 layouts: home team layout, score layout and away layout - with no success of getting the expected result.
Can someone please help ?
Here is my piece of code:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:background="#color/GamesBGColor" >
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_gravity="center"
android:orientation="horizontal" >
<ImageView
android:id="#+id/homeTeamIcon"
android:layout_width="50dip"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:src="#drawable/holonlogo" />
<ImageView
android:id="#+id/homeTeamText"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:src="#drawable/holontext"
android:layout_width="115dip"
android:layout_marginLeft="3dip" />
<TextView
android:id="#+id/homeTeamScore"
android:layout_width="25dip"
android:layout_height="wrap_content"
android:text="123"
android:textColor = "#color/purple"
android:layout_gravity="center"
android:textStyle="bold"
android:layout_marginLeft="5dip" />
<TextView
android:id="#+id/seperator"
android:layout_width="10dip"
android:layout_height="wrap_content"
android:text="-"
android:layout_gravity="center"
android:layout_marginLeft="7dip" />
<TextView
android:id="#+id/awayTeamScore"
android:layout_width="25dip"
android:layout_height="wrap_content"
android:text="122"
android:textColor = "#color/red"
android:layout_gravity="center"
android:textStyle="bold"
android:layout_marginLeft="7dip" />
<ImageView
android:id="#+id/awayTeamText"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:src="#drawable/jerusalemtext"
android:layout_width="115dip"
android:layout_marginLeft="3dip"/>
<ImageView
android:id="#+id/awayTeamIcon"
android:layout_width="50dip"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:src="#drawable/jerusalemlogo" />
</LinearLayout>
</LinearLayout>

If you want your layouts to work on different resolution screens your should be sizing them using dip as the unit. For example:
android:layout_marginRight="10dip"
dip stands for Device Independent Pixel and using these in your layout means that Android will automatically scale your layout depending on which display the device running your application has.
You can read about these in the Supporting Multiple Screens page in the Android Developer Documentation. This document also has some other options for handling different displays but I think using dip is probably the easiest.