I'm developing apps for android since over a year now with success, but one thing is still a problem for me:
How to design a layout with a combination of TextViews, ImageViews and Buttons while retaining the relation between each elements on different screen sizes.
I want to build a layout like this:
It's for a listview, so many of these layouts are used. The app has a different layout for smartphones and tablets.
So the orange button on the right should always have 3 lines of text but should still have a maximum width, the image on the left should have the same height as the button on the right. The 3 lines of text in the middle should take up as many space as they can. The star image should have the same hight as the text on their right.
I've managed to build a similar test layout with a TableLayout, here are the previews from AndroidStudio:
Nexus S
Nexus 6
On the Nexus S screen size, the layout is OK but on bigger screens it's ugly. The button is too small, the image on the left is also too small.
Here is the code for my test layout:
<TableLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:stretchColumns="1"
>
<TableRow android:orientation="horizontal"
android:layout_height="wrap_content">
<ImageView
android:id="#+id/iv1"
android:layout_width="80dp"
android:layout_height="match_parent"
android:contentDescription="#string/dummy"
android:padding="#dimen/raster4dp"
android:scaleType="fitXY"
android:src="#drawable/avatar_1" />
<RelativeLayout
android:layout_width="0dp"
android:layout_height="wrap_content"
android:orientation="vertical">
<TextView
android:id="#+id/tv1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="some nice text here"
android:layout_alignParentLeft="true"
android:textAppearance="?android:attr/textAppearanceMedium"
/>
<ImageView
android:id="#+id/iv2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#id/tv1"
android:src="#drawable/ic_male_user_bw"
android:layout_alignParentLeft="true"
/>
<TextView
android:id="#+id/tv2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="more nice text"
android:layout_toRightOf="#id/iv2"
android:layout_alignBottom="#id/iv2"
android:textAppearance="?android:attr/textAppearanceMedium"
/>
<ImageView
android:id="#+id/iv3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#id/iv2"
android:layout_alignParentLeft="true"
android:src="#drawable/ic_male_user_bw"
/>
<TextView
android:id="#+id/tv3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="more nice text"
android:layout_toRightOf="#id/iv3"
android:layout_alignBottom="#id/iv3"
android:textAppearance="?android:attr/textAppearanceMedium"
/>
</RelativeLayout>
<Button
android:id="#+id/btn1"
android:layout_width="80dp"
android:layout_height="wrap_content"
android:background="#drawable/button_dropshadow_black_xml"
android:text="Line1\nLine2\nLine3"
android:textColor="#android:color/white" />
</TableRow>
</TableLayout>
So hopefully my question is not too silly, but i have some problems understanding how to fix this. Currently I'm using a width of fixed 80dp on the button and the image to the left. I think this is not realy the way it works on Android.
What sizes do i need to use here, what kind of layouts?
The sections about sreensizes etc. on the developer site is known by me (https://developer.android.com/guide/practices/screens_support.html) but it wasn't that helpful to me.
Thanks for help! :)
Each terminal has different dimensions. If you put a button that has a size of 80dp, when other terminal screen is larger, that button is going to be smaller compared to the terminal screen you were doing the tests.
You should play with WEIGHT.
| | | |
|_____________|_________________________|____________|
0.3 0.5 0.2 0.3 + 0.5 + 0.2 = 1 <-Weight.
Read this, will help.
Also there's a question similar to yours, check it too.
DP is for setting a fixed amount of pixels, if you don't want to consider the pixel density of your device's screen. This lets you that a button would be shown with the same size in a Nexus 4,5 or in a Samsung Galaxy Mini.
The same "absolute" size. This means that if your image is too big, it could fit in Nexus, but no in the other because of its smaller screen. This is due to the fact that it does not depend on the screen size, neither the pixel density.
What I hardly recommend you is the use of LinearLayouts (with their attribute weight) and RelativeLayouts as direct children (in case you need them). This could be "the same" (not exactly) than the use of "%" in CSS.
Here, you can see an example of weight attribute (The second answer gives you more tips).
Linear Layout and weight in Android
I hope this helps!!
check this .... increase parent layout height if needed:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal" >
<LinearLayout
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="2"
android:orientation="horizontal" >
<ImageView
android:id="#+id/iv1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:contentDescription="dummy"
android:src="#drawable/ic_launcher" />
</LinearLayout>
<LinearLayout
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="6"
android:orientation="vertical" >
<TextView
android:id="#+id/tv1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="some nice text here"
android:textAppearance="?android:attr/textAppearanceMedium" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:orientation="horizontal" >
<ImageView
android:id="#+id/iv2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/ic_launcher" />
<TextView
android:id="#+id/tv2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="more nice text"
android:textAppearance="?android:attr/textAppearanceMedium" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:orientation="horizontal" >
<ImageView
android:id="#+id/iv3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/ic_launcher" />
<TextView
android:id="#+id/tv3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="more nice text"
android:textAppearance="?android:attr/textAppearanceMedium" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:orientation="horizontal" >
<ImageView
android:id="#+id/iv23"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/ic_launcher" />
<ImageView
android:id="#+id/iv24"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/ic_launcher" />
</LinearLayout>
</LinearLayout>
<Button
android:id="#+id/btn1"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="2"
android:background="#565657"
android:text="Line1\nLine2\nLine3"
android:textColor="#android:color/white" />
</LinearLayout>
Related
I found a lot of question were asked on supporting different screen size where the screen size are varies from Tablet to phone and etc. I am writing my first android application and when I am looking at the layout in different phone, All of them are not relatively scalable to screen.
I am pasting a small RelativeLayout code here to understand how to make it proper scalable in less changes. I also followed the android official doc and learn two things
drawable images for different screen
use sp for mentioning text size and for rest of them use dp
But it's not helping me
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:background="#ffd5d6d6">
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="48dp"
android:background="#ffffffff"
android:elevation="#dimen/abc_action_bar_default_height_material">
<ImageView
android:id="#+id/back"
android:layout_width="24dp"
android:layout_height="24dp"
android:layout_centerVertical="true"
android:layout_marginLeft="16dp"
android:src="#drawable/ic_back" />
<TextView
android:id="#+id/profileDesc"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:text="Test"
android:textColor="#ff3c3f41"
android:textSize="15dp" />
<ImageView
android:id="#+id/flag"
android:layout_width="24dp"
android:layout_height="24dp"
android:layout_alignParentEnd="true"
android:layout_alignParentLeft="false"
android:layout_alignParentStart="false"
android:layout_alignWithParentIfMissing="false"
android:layout_centerVertical="true"
android:layout_marginRight="16dp"
android:src="#drawable/temp_ic_share" />
</RelativeLayout>
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_marginTop="52dp">
<TextView
android:id="#+id/roommate"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentStart="false"
android:layout_centerHorizontal="true"
android:layout_marginTop="40dp"
android:text="Who are you?"
android:textColor="#ff3c3f41"
android:textSize="18dp" />
<Button
android:id="#+id/foodie"
style="#style/Widget.AppCompat.ButtonBar"
android:layout_width="60dp"
android:layout_height="38dp"
android:layout_alignParentStart="false"
android:layout_marginLeft="56dp"
android:layout_marginTop="80dp"
android:background="#fa6425"
android:text="Foodie"
android:textColor="#fff4f4f4"
android:textSize="12dp" />
<Button
android:id="#+id/button4"
style="#style/Widget.AppCompat.ButtonBar"
android:layout_width="80dp"
android:layout_height="38dp"
android:layout_marginLeft="15dp"
android:layout_marginTop="80dp"
android:layout_toEndOf="#+id/foodie"
android:background="#fa6425"
android:text="Beach bum"
android:textColor="#fff4f4f4"
android:textSize="12dp" />
<Button
android:id="#+id/button5"
style="#style/Widget.AppCompat.ButtonBar"
android:layout_width="80dp"
android:layout_height="38dp"
android:layout_alignTop="#+id/button4"
android:layout_marginLeft="15dp"
android:layout_toEndOf="#+id/button4"
android:background="#fa6425"
android:text="Tree hugger"
android:textColor="#fff4f4f4"
android:textSize="12dp" />
</RelativeLayout>
<Button
android:id="#+id/button"
style="#style/Widget.AppCompat.ButtonBar"
android:layout_width="match_parent"
android:layout_height="50dp"
android:layout_alignParentBottom="true"
android:layout_alignParentStart="true"
android:background="#fa6425"
android:text="Send"
android:textColor="#fff4f4f4" />
</RelativeLayout>
As you can see that I am including two Parallel RelativeLayout in one main RelativeLayout. here the views on three different size:
nexus one
nexus 5
nexus 6
Best alignment is in Nexus 5 screen. Do I need to create different layout folder i.e. hdpi, mdpi and etc? If I am not wrong then I don't need to because my application is going to run only on phone devices (in portrait mode only).
How can I make scalable screen layouts. Any help would be appreciable :)
If you want to force all the views to have the same ration on screen the only way is to give it a size dynamically after you calculated the ratio between the desired pixels and the screen density, which is not really a solution, What you need to understand is when working with various screen sizes, each one suppose to behave differently, a Tablet screen is expected to be bigger and thus having more room for elements to show up on screen, a phone screen is smaller and less elements should be showed on screen, you need to adjust your view to support all of these screens and the proper way is to write a different layout for tablets and phones, or even different layout by screen dpi.
I am pretty new, I am using Android Studio, is that what you are using? First thing first, if you always want you activity to be in portrait mode, use this code in your manifest, you have to add the code to each activity you want to stay in portrait mode. If you don't, and you don't add code to handle the switch in screen orientation, the phone will likely crash.
<activity
android:name=".TitleActivity"
android:label="#string/title_activity"
android:screenOrientation="portrait" >
</activity>
Instead of a relative view, Try the Linear Layout.
You would have your Main Layout, with a few nested Linear Layouts.
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:ads="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:id="#+id/example">
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:gravity="center">
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Title Here"
android:id="#+id/Title"
android:layout_gravity="top|center_horizontal"
android:layout_marginTop="20dp"
android:gravity="center_horizontal"
android:layout_marginBottom="20dp" />
</LinearLayout>
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:layout_marginBottom="50dp">
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="New Button"
android:id="#+id/button"
android:layout_weight="1"
android:layout_marginLeft="10dp" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="New Button"
android:id="#+id/button2"
android:layout_weight="1" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="New Button"
android:id="#+id/button3"
android:layout_weight="1"
android:layout_marginRight="10dp" />
</LinearLayout>
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content">
<ImageView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:id="#+id/imageView"
android:layout_gravity="center_horizontal"
android:background="#drawable/test"
android:layout_margin="50dp" />
</LinearLayout>
This layout has A title Above the three buttons, Then three buttons, then an image view below, it scales from 3.7 to 7.0. Larger than 7, I would make another layout.
You need an image named test in your drawable file.
use this Library will help you to set a Responsive scalable Views for all the devices Layouts
https://github.com/intuit/sdp
irs really easy and simpl just replace.
android:layout_width="50dp"
android:layout_height="60dp"
with.
android:layout_width="50sdp"
android:layout_height="60sdp"
and for textView
android:textSize="60ssp"
instead of. sp
I have gone through many relative answers on stockoverflow and link's such as Supporting Different Screens or Screen Compatibility Mode
I have created the following relative layout and I am trying to make it look alike in all android screens.
My images fit perfect for 4.8 inch phones but when I try to use a 2.8 inch display or something like like that, some buttons go on top of others, and they do not shrink.
Does anyone have any suggestion how to improve that?
And preferably without increasing the size of my app.
Thanks in advance!
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:mm="http://millennialmedia.com/android/schema"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#drawable/background"
tools:context=".MainActivity" >
<ImageButton
android:id="#+id/Switch_off"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
android:onClick="someMethod"
android:background="#drawable/switch_off"/>
<ImageView
android:id="#+id/warning_shot"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_alignParentTop="true"
android:background="#drawable/more"
android:onClick="someMethod" />
<ImageView
android:id="#+id/imageViewBatteryState"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_below="#+id/Switch_off"
/>
<ImageView
android:id="#+id/sh"
android:layout_width="147dp"
android:layout_height="54dp"
android:layout_below="#+id/Switch_off"
android:layout_centerHorizontal="true"
android:background="#drawable/me"/>
<ImageView
android:id="#+id/sit"
android:layout_width="100dp"
android:layout_height="50dp"
android:layout_below="#+id/Switch_off"
android:layout_centerHorizontal="true"
/>
<TextView
android:id="#+id/textViewBatteryInfo"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="#ffffff"
android:textSize="12sp"
android:textStyle="bold"
android:typeface="monospace"
android:layout_alignBottom="#+id/sit"
android:layout_centerHorizontal="true"/>
</RelativeLayout>
I will suggest you to use LinearLayout instead of Relativelayout specially for the issue :
My images fit perfect for 4.8 inch phones but when I try to use a 2.8
inch display or something like like that, some buttons go on top of
others, and they do not shrink.
Because When you give orientation to Linearlayout then Its child will never get on top of each other for any resolution or screen size.
And If you give them Weight then Views will be in fix position for Each and Every device.
For example Put below Xml in your project and Check this out in Any resolution, It will give the same Result.
XML:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:mm="http://millennialmedia.com/android/schema"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
tools:context=".MainActivity" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal" >
<Button
android:id="#+id/button1"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="Button 1" />
<Button
android:id="#+id/button2"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="Button 2" />
<Button
android:id="#+id/button3"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="Button 3" />
</LinearLayout>
</LinearLayout>
Here i am trying to handle different screens ,These are several screens i am trying to handle ,Here if i adjust for one screen remaining screens getting error ,not getting what is problem
here is
Here is my 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:background="#drawable/transactionpagebg" >
<TextView
android:id="#+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="160dp"
android:gravity="center"
android:paddingLeft="50dp"
android:text="Current Meter Reading"
android:textAppearance="?android:attr/textAppearanceLarge"
android:textColor="#android:color/white" />
<LinearLayout
android:id="#+id/linearLayout1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentRight="true"
android:layout_centerVertical="true"
android:gravity="center"
android:orientation="horizontal" >
<EditText
android:id="#+id/editText1"
android:layout_width="130dp"
android:layout_height="wrap_content"
android:inputType="number" />
<Spinner
android:id="#+id/spinner1"
android:layout_width="150dp"
android:layout_height="50dp" />
</LinearLayout>
<AbsoluteLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<Button
android:id="#+id/saveButton"
android:layout_width="113px"
android:layout_height="wrap_content"
android:layout_x="61dp"
android:layout_y="330dp"
android:background="#drawable/savebutton" />
<Button
android:id="#+id/settingsButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_x="208dp"
android:layout_y="330dp"
android:background="#drawable/settingbutton" />
</AbsoluteLayout>
</RelativeLayout>
to do as it need to be, you need to have support for different screen sizes you need to have different layouts, and also some changes in your manifest file...
check this question How to support different screen size in android
and this link http://developer.android.com/guide/practices/screens_support.html
There are many ways to make each view look right on various screens. However, I have found two methods are working best for me (at the moment):
To get the views to dynamically set their screen positions, wrap the widgets in a LinearLayout (LL), and put those LLs in a single LL. Set the weight of the inner LL to 1, and they will space themselves equally within the parent LL. This works for horizontal and vertical layouts. The distance between the widgets gets adjusted automatically by the OS.
create different dimens.xml folders/files for the different screen sizes (small, medium, large) and further differentiate them by density of needed (mdpi, hdpi, xhdpi, etc.). This way you can set margins, paddings, font sizes, for each size/density to get what you want.
EDIT: I see you put "TRANSACTION" in the background drawable? You can't do that! You need to create an image with just the text, and put it in an ImageView at the top of the layout. That way, you can set its position and size as needed for different screens, and make the other widgets adjust their positions relative to that image.
Even better would be to find a free font (ttf file) you can use that matches what you want, and put it in a TextView.
Here is a quick example of your layout with the ideas I mentioned. You would put the margins and font sizes in a dimens.xml file, so that you can adjust them.
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/LinearLayout1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#0000ee"
android:orientation="vertical" >
<LinearLayout
android:id="#+id/hh"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:layout_marginTop="36dp"
android:orientation="vertical" >
<TextView
android:id="#+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:layout_marginBottom="36dp"
android:text="TRANSACTION"
android:textColor="#ffffff"
android:textSize="28sp" />
<TextView
android:id="#+id/test_textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center_horizontal"
android:text="Current Meter Reading"
android:textAppearance="?android:attr/textAppearanceLarge"
android:textColor="#android:color/white" />
</LinearLayout>
<LinearLayout
android:id="#+id/test_linearLayout1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:layout_weight="1"
android:gravity="center"
android:orientation="horizontal" >
<EditText
android:id="#+id/test_editText1"
android:layout_width="130dp"
android:layout_height="wrap_content"
android:layout_marginRight="24dp"
android:background="#ffffff"
android:inputType="number" />
<Spinner
android:id="#+id/test_spinner1"
android:layout_width="150dp"
android:layout_height="50dp"
android:background="#999999" />
</LinearLayout>
<LinearLayout
android:id="#+id/LinearLayout1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:layout_weight="1" >
<Button
android:id="#+id/test_saveButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginRight="24dp"
android:text="Save" />
<Button
android:id="#+id/test_settingsButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</LinearLayout>
</LinearLayout>
Is there a way to make text, buttons, progress bar stay in around the same area with any resolution. So if you on a nexus 10 and nexus 7 the text, buttons, progress bar will say around the same place. As my app just looks silly on nexus 10. Heres my xml code:
<?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:background="#drawable/background"
android:orientation="vertical" >
<TextView
android:id="#+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Next"
android:textSize="20dp"
android:layout_marginTop="40dp"
android:layout_marginLeft="20dp"
android:layout_marginRight="20dp"
android:gravity="center"
android:textStyle="bold"
android:textColor="#FFFFFF"/>
<ProgressBar
android:id="#+id/progressBar"
style="?android:attr/progressBarStyleHorizontal"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginTop="150dp"
android:layout_marginRight="20dp"
android:layout_marginLeft="20dp" />
<ImageButton
android:id="#+id/pauseicon"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/pauseicon"
android:layout_gravity="center"
android:layout_marginTop="20dp"
style="?android:attr/borderlessButtonStyle"/>
I would not recommend that you write your layout like you have. To make your app look similar on different devices, you should align all the views so that they are relational to each other.
There is a lot of information here
I would also advise that you use a relative layout rather than a linear layout, because it is easier to make the views relational to each other, which (usually) makes your app look better at different screen sizes.
Here is an example of a relative layout(from the dev docs)
<EditText
android:id="#+id/name"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:hint="#string/reminder" />
<Spinner
android:id="#+id/dates"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_below="#id/name"
android:layout_alignParentLeft="true"
android:layout_toLeftOf="#+id/times" />
<Spinner
android:id="#id/times"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#id/name"
android:layout_alignParentRight="true" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#id/times"
android:layout_alignParentRight="true"
android:text="#string/done" />
I have a layout with graphics drawn in custom Views using the Canvas drawing primitives, plus a TextView and 2 buttons. The emulator is set to the same pixel width as the phone (400 pixels) and the 2D graphics are specified in pixel dimensions.
(Emulator on the left, phone on the right.)
Note the the graphics match. (the actual content of the graphics are different because the data is different ) But the TextView and buttons are radically different. Here's the XML -
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="horizontal"
android:background="#303080"
android:layout_width="fill_parent"
android:layout_height="wrap_content">
<TextView android:id="#+id/eventSummary"
android:layout_width="250dp"
android:background="#202090"
android:layout_height="fill_parent"
android:minLines="4"
android:singleLine="false"
android:text="text" />
<Button android:id="#+id/PrevButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:onClick="prevButtonHandler"
android:text="<"
/>
<Button android:id="#+id/NextButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:onClick="nextButtonHandler"
android:text=">"
/>
</LinearLayout>
... I've tried specifying the TextView width using SP's and DP's. Why is there such a big difference and how can I get the Emulator and phone to match? (FWIW the phone is an HTC Droid Incredible).
Thanks in advance!
Try setting the layout_width in dp in the LinearLayout, then using android:layout_weight="1" in the TextView.
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="horizontal"
android:background="#303080"
android:layout_width="280dp"
android:layout_height="wrap_content">
<TextView android:id="#+id/eventSummary"
android:layout_width="wrap_content"
android:background="#202090"
android:layout_height="fill_parent"
android:layout_weight="1"
android:minLines="4"
android:singleLine="false"
android:text="text" />
<Button android:id="#+id/PrevButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:onClick="prevButtonHandler"
android:text="<"
/>
<Button android:id="#+id/NextButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:onClick="nextButtonHandler"
android:text=">"
/>
</LinearLayout>
I'm late, but its probably because of pixel density. Check out this link and see if it helps: http://developer.android.com/guide/practices/screens_support.html