Develop Reference

How do I right justify a TextView in a Linear Layout?

I am trying to get the TextView, "tv_amount" to stay on the right side of the screen. I have tried using android:gravity="right" but that hasn't been working for me. Anyone have any suggestions?
Image of emulator running this 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="45dp"
android:gravity="center_vertical"
android:orientation="horizontal">
<ImageView
android:id="#+id/iv_icon"
android:layout_width="40sp"
android:layout_height="40sp"
android:background="#drawable/circle_border"
android:padding="6sp"
android:layout_marginLeft="6dp"
android:src="#drawable/food"/>
<TextView
android:id="#+id/tv_label"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:layout_marginStart="12dp"
android:text="Yummy Pizza"
android:textSize="20sp" />
<TextView
android:id="#+id/tv_amount"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginEnd="12dp"
android:gravity="end"
android:text="$25"
android:textSize="25sp" />
</LinearLayout>
I am expecting the transaction or "tv_amount" to stay be right justified so that end of the number is staying towards the right side of the screen.
I tried using :
android:layout_weight="0"
android:layout_gravity="end"
android:gravity="right"
but these don't seem to work obviously. I am a beginner when it comes to android development and can't seem to find any answers that have helped anywhere else. They all say to use android:gravity or some other alternative. Maybe there is something in my code that doesn't allow that.

Try it like this:
Splitting the content into left and right will result in the weight and gravity properties working. Check out this layout below.
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<TextView
android:id="#+id/tv_title"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:text="Title"
android:textSize="20sp" />
<!--Separate layout aligned to the left, containing an image and a yummy pizza label. -->
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<LinearLayout
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:orientation="horizontal">
<ImageView
android:id="#+id/iv_icon"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
/>
<TextView
android:id="#+id/tv_text_left"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Text Left"
android:textSize="16sp" />
</LinearLayout>
<!--Display the pizza price on a separate label aligned to the right -->
<TextView
android:id="#+id/tv_text_right"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="right"
android:text="Text Right"
android:layout_weight="1"
android:textSize="16sp" />
</LinearLayout>
</LinearLayout>

I am dumb. The issue wasn't with the code in my individual recycler view layout code. It was with my activity_main.xml. I set the recycler_view width to "wrap_content" when it should have been "match_parent." Rookie mistake.

ImageView in LinearLayout is displayed on wrong place

I have a layout with one row:
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:gravity="center_horizontal"
android:orientation="horizontal" >
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:paddingRight="#dimen/total_sales_page_summary_text_distance"
android:text="test2"
android:textSize="#dimen/total_sales_page_info_font_size" />
<TextView
android:id="#+id/year_on_year"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textColor="#color/total_sales_info_text_color"
android:textSize="#dimen/total_sales_page_info_font_size" />
<ImageView
android:id="#+id/tradeGreen"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="5dp"
android:layout_gravity="center_vertical"
android:contentDescription=""/>
</LinearLayout>
In source code I just set different number and visibility (GONE/VISIBLE) of imageview (clicking on different buttons).
as result:
image is not visible (button1 was clicked)
2.image and some long number are vivible (button2 was clicked)
3.image and other little shorter number are visible (button3)
You can compare how it looks like. Text becomes visible but image is on the previous place. Why? Why image is not moved to left.
By the way. When screen is rotated - image becomes visible on correct place.

Try to use weight.. it will align based on screen
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:gravity="center_horizontal"
android:orientation="horizontal" xmlns:android="http://schemas.android.com/apk/res/android">
<TextView
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:paddingRight="#dimen/total_sales_page_summary_text_distance"
android:text="test2"
android:textSize="#dimen/total_sales_page_info_font_size" />
<TextView
android:id="#+id/year_on_year"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:textColor="#color/total_sales_info_text_color"
android:textSize="#dimen/total_sales_page_info_font_size" />
<ImageView
android:id="#+id/tradeGreen"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:layout_marginLeft="5dp"
android:layout_gravity="center_vertical"
android:contentDescription=""/>

As Deepchand rightly said, add that Image as a drawable to the TextView directly. This will take care of the Image position and will remove an extra ImageView from the layout.
So to your TextView add this,
<TextView
android:id="#+id/year_on_year"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textColor="#color/total_sales_info_text_color"
android:drawableRight="your image" //this will add an image to its right
android:drawablePadding="5dp" // you can also add padding as per you need
android:textSize="#dimen/total_sales_page_info_font_size" />
Hope this works the way you want. :)

This will be solved by using Weight.
Here your UI is horizontally so you need to change in your xml file. Like,
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:gravity="center_horizontal"
android:orientation="horizontal" xmlns:android="http://schemas.android.com/apk/res/android">
<TextView
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:paddingRight="#dimen/total_sales_page_summary_text_distance"
android:text="test2"
android:textSize="#dimen/total_sales_page_info_font_size" />
<TextView
android:id="#+id/year_on_year"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:textColor="#color/total_sales_info_text_color"
android:textSize="#dimen/total_sales_page_info_font_size" />
<ImageView
android:id="#+id/tradeGreen"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:layout_marginLeft="5dp"
android:layout_gravity="center_vertical"
android:contentDescription=""/>
</LinearLayout>

How to optimise this layout XML file to match my idea?

I've created this fragment named searchfragment. Below there is the layout XML file of the searchfragment. Unfortunatelly the design isn't that smooth as I want it to be.
Here's what I wanted it to look like:
First row: Welcoming text (that works)
Second row: Search input field (that works, too)
Thirt row (and here it gets complicated): There should be a text named "Search for" and then a Spinner with the item you can search for (e.g. name, year, price). Then there's the Search button. Next thing is that you can sort the output. Therefore there's a text with "Sort for", a Spinner with the critirion and a Sort button. Best case the search section should be align to the left and the sort for to the right, but still centered.
Forth row: Output field.
Now as the elements are all present on my device, they are not in the graphical layout of Eclipse. I've tried for hours now to get it working but it's kind of hard if you're not sseing your objects.
Long text - short task: Please help me optimise my design.
searchfragment.xml:
<?xml version="1.0" encoding="utf-8"?>
<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:layout_gravity="center"
android:orientation="vertical" >
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:layout_gravity="center"
android:text="#string/welcome" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal" >
<EditText
android:id="#+id/edit_message"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="20dp"
android:layout_marginRight="20dp"
android:hint="#string/edit_message" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center|center_horizontal"
android:layout_marginTop="8dp" >
<TextView
android:id="#+id/textView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/search_for" />
<Spinner
android:id="#+id/criterion"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="5dp"
android:layout_marginRight="5dp"
android:entries="#array/searcharray"
android:prompt="#string/prompt" />
<Button
android:id="#+id/btnSubmit"
android:layout_width="136dp"
android:layout_height="match_parent"
android:layout_marginLeft="5dp"
android:layout_marginRight="5dp"
android:background="#drawable/android"
android:onClick="sendMessage"
android:text="#string/button_send" />
<TextView
android:id="#+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/sort_for"
android:textAppearance="?android:attr/textAppearanceMedium" />
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:orientation="vertical" >
<Spinner
android:id="#+id/sort"
android:layout_width="wrap_content"
android:layout_height="0dip"
android:layout_weight="1"
android:entries="#array/sortarray"
android:prompt="#string/prompt" />
</LinearLayout>
<Button
android:id="#+id/sort_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="5dp"
android:layout_marginRight="5dp"
android:background="#drawable/android"
android:onClick="sortAgain"
android:text="#string/button_send" />
</LinearLayout>
<ScrollView
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<TextView
android:id="#+id/showResults"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceMedium" />
</ScrollView>
</LinearLayout>
I've added a photo of the current design. The space with the red frame around it is the third "row" and should be changed. The second spinner is (I don't know why) much too wide. It should be that wide as the first one. Then all the elements should be about the same heigth and the elements should be centered.

You're on the right track with your layout, but the reason your second Spinner is taking up so much room is that you've set it's layout_weight to 1, and as it's the only one with a layout_weight, it's taking up the rest of the space that's free.
If you want the items to take up a relative amount of space on the screen, then you could stick with using layout_weight and give all of your items that property.
For example, just for your third row you would get rid of the LinearLayout around your Spinner, change some of the layout_width properties and give all of your items a layout_weight.
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center|center_horizontal"
android:layout_marginTop="8dp" >
<TextView
android:id="#+id/textView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="#string/search_for" />
<Spinner
android:id="#+id/criterion"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:layout_marginLeft="5dp"
android:layout_marginRight="5dp"
android:entries="#array/searcharray"
android:prompt="#string/prompt" />
<Button
android:id="#+id/btnSubmit"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_weight="1"
android:layout_marginLeft="5dp"
android:layout_marginRight="5dp"
android:background="#drawable/android"
android:onClick="sendMessage"
android:text="#string/button_send" />
<TextView
android:id="#+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="#string/sort_for"
android:textAppearance="?android:attr/textAppearanceMedium" />
<Spinner
android:id="#+id/sort"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:entries="#array/sortarray"
android:prompt="#string/prompt" />
<Button
android:id="#+id/sort_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:layout_marginLeft="5dp"
android:layout_marginRight="5dp"
android:background="#drawable/android"
android:onClick="sortAgain"
android:text="#string/button_send" />
</LinearLayout>
This is going to give all of your items an equal weighting, so the TextViews will be the same size as the Spinners which will be the same size as the Buttons. Play around with the layout_weight attribute to make them more relative, for example if you want the Buttons to be twice the size as the Spinners, set their layout_weight to 2.

Android RelativeLayout make Edit Texts take all space

I have the following layout:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#drawable/aussie_bg_big" >
<ImageView
android:id="#+id/titleImage"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:contentDescription="#null"
android:src="#drawable/aussie_title_small" />
<ImageView
android:id="#+id/clearButtonOutput"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_above="#+id/titleImage"
android:layout_alignParentRight="true"
android:contentDescription="#null"
android:src="#drawable/aussie_clear" />
<EditText
android:id="#+id/OutputText"
android:layout_width="fill_parent"
android:layout_height="100dp"
android:layout_above="#+id/clearButtonOutput"
android:layout_alignParentLeft="true"
android:background="#drawable/textbox"
android:ems="10"
android:gravity="top"
android:inputType="textMultiLine"
android:textColor="#ffffff" />
<ImageView
android:id="#+id/translateButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_above="#+id/OutputText"
android:layout_centerHorizontal="true"
android:clickable="true"
android:contentDescription="#null"
android:src="#drawable/translatebuttonselector" />
<ImageView
android:id="#+id/ClearButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_above="#+id/translateButton"
android:layout_alignParentRight="true"
android:contentDescription="#null"
android:src="#drawable/aussie_clear" />
<EditText
android:id="#+id/InputText"
android:layout_width="fill_parent"
android:layout_height="100dp"
android:layout_above="#+id/ClearButton"
android:layout_alignParentLeft="true"
android:background="#drawable/textbox"
android:ems="10"
android:gravity="top"
android:inputType="textMultiLine"
android:singleLine="false"
android:textColor="#ffffff" />
What I'd like to do is:
-> Keep the "imageBottom" imageview on the BOTTOM of the activity at all times, centered horizontally.
-> Keep the "imageCenter" imageview on the center of the activity at all times, centered horizontally.
-> Keep "imageBelowInputText" imageview below the InputText edittext which is located ABOVE imageCenter, aligned to the right.
-> Keep "imageBelowOutputText" imageview below the OutputText edittext which is located BETWEEN imageCenter and imageBottom, aligned to the right.
It works fine so far but I'd also like for the edittext views to occupy ALL of the remaining space EQUALLY. Providing different versions of the layout for small, normal, large, x-large screens worked fine, considering I hardcoded each edittext's size in dpi. However, on some layouts, it still looks a bit wrong and misplaced (misaligned). That's why I'm looking for a solution to place the ImageViews accordingly first, and then let the two EditTexts take all the remaining space EQUALLY (important).
So far, I couldn't think of a 100% correct solution. Can you help me out? Thanks!

Notice the two edittexts have their layout_height set to "0dp" and layout_weight set to "1"
XML
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/LinearLayout1"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:paddingTop="15dp"
android:orientation="vertical" >
<EditText
android:id="#+id/editText1"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1" />
<Button
android:id="#+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="right"
android:text="Clear" />
<Button
android:id="#+id/button2"
android:layout_width="wrap_content"
android:layout_height="100dp"
android:layout_gravity="center"
android:text="Bear" />
<EditText
android:id="#+id/editText1"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1" />
<Button
android:id="#+id/button2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="right"
android:text="Clear" />
<Button
android:id="#+id/button2"
android:layout_width="wrap_content"
android:layout_height="100dp"
android:layout_gravity="center"
android:text="Speaking Aussie" />
</LinearLayout>

Try giving each of the EditText views a height of 0dp, and a layout_weight value of 1. Give it a shot and let me know if that works.

Why are some of my views not aligned correctly at the bottom of my relative layout?

I have problems getting some of my views aligned in a relative layout that I use inside a row of my listview.
Here is a screenshot from the layout builder in Eclipse, this is what I think it should look like:
(source: janusz.de)
The next image is from the emulator. Now the TestTestTest View is at the top and covers the name and distance Textviews.
(source: janusz.de)
This is my layout:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent" android:layout_height="fill_parent"
android:padding="4dip">
<ImageView android:id="#+id/logo" android:layout_width="wrap_content"
android:layout_height="wrap_content" android:adjustViewBounds="true"
android:scaleType="centerInside" android:src="#drawable/icon"
android:layout_centerVertical="true" android:layout_alignParentLeft="true"
android:background="#color/green" />
<TextView android:id="#+id/distance" android:layout_width="wrap_content"
android:layout_height="wrap_content" android:text="Distance"
android:layout_alignParentRight="true" android:layout_alignParentTop="true"
android:paddingRight="4dip" android:background="#000000" />
<TextView android:id="#+id/name" android:layout_width="fill_parent"
style="#style/ListHeadText" android:layout_height="wrap_content"
android:text="Name"
android:layout_alignTop="#id/distance" android:layout_toRightOf="#id/logo"
android:layout_toLeftOf="#id/distance" android:gravity="clip_horizontal"
android:lines="1" android:paddingLeft="4dip" android:background="#color/red" />
<TextView android:id="#+id/number" android:layout_width="wrap_content"
android:layout_height="wrap_content" android:text="Number"
android:paddingRight="4dip" android:layout_alignRight="#id/distance"
android:background="#color/darkred" android:layout_below="#id/distance" />
<TextView android:id="#+id/subcategory" android:layout_width="wrap_content"
android:layout_height="wrap_content" android:text="Subcategory"
android:paddingLeft="4dip" android:layout_alignLeft="#id/name"
android:lines="1" android:gravity="clip_horizontal"
android:layout_below="#id/distance" android:background="#color/green" />
<TextView android:id="#+id/test" android:layout_width="fill_parent"
android:layout_height="wrap_content" android:text="TestTestTest"
android:paddingLeft="4dip"
android:layout_alignParentBottom="true" android:gravity="bottom"
android:background="#color/red" />
Shouldnt align_parent_bottom put the view at the bottom of the cell in the list?

Try adding android:layout_alignParentLeft="true" as well; sometimes Views aren't displayed properly if it can't anchor the view with at least 2 points. Also, is this RelativeLayout used within a ListView? If so, you might find you have some difficulty getting it to look right. There was another question where someone was having a problem where the RelativeLayout looked right on its own, but not once it was included as part of a ListView. We didn't manage to figure out what went wrong so he had to use nested LinearLayouts instead.