Develop Reference

Problems with LinearLayout, views aren't resembling the preview in Graphical Layout on device

So I'm having a problem that is driving me crazy. Knowing the purpose of my app isn't important/relevant so I'll just paste my code from the xml file. The layout is a RelativeLayout, but the problem I'm having is inside of this LinearLayout.
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:orientation="vertical"
android:background="#drawable/background_orange"
android:id="#+id/rel_layout" >
<RelativeLayout
android:id="#+id/layout_1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentTop="false"
android:layout_centerHorizontal="true">
<ImageView
android:id="#+id/component_1"
android:layout_height="wrap_content"
android:layout_width="fill_parent"
android:layout_centerHorizontal="true"
android:layout_alignParentBottom="true"
android:src="#drawable/source1"
/>
<ImageView
android:id="#+id/component_2"
android:layout_height="wrap_content"
android:layout_width="match_parent"
android:layout_above="#id/component_1"
android:src="#drawable/source2"
android:layout_alignRight="#id/component_1"
android:layout_marginRight="-50dip"
android:layout_marginBottom="-25dip"
/>
</RelativeLayout>
<LinearLayout
android:id="#+id/problemIsHere"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:orientation="horizontal"
>
<EditText
android:id="#+id/edit_text"
android:layout_width="0dip"
android:layout_height="wrap_content"
android:layout_weight="1"
android:hint="What&apos;s your question?"
android:imeOptions="actionDone"
android:inputType="textCapSentences|textAutoComplete"
android:textSize="25sp"
android:layout_gravity="left"
android:textStyle="bold" />
<ImageButton
android:id="#+id/image_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginRight="5dip"
android:layout_weight="0"
android:layout_gravity="right"
android:background="#drawable/source3"
/>
</LinearLayout>
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_below="#id/problemIsHere"
android:gravity="center"
>
<ImageView
android:id="#+id/image_view"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#drawable/source4"
android:onClick="computeUserInput" />
<ImageButton
android:id="#+id/image_button0"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_toRightOf="#id/image_view"
android:layout_alignTop="#id/image_view"
android:layout_marginLeft="-2dip"
android:background="#drawable/voice_recognition_touse"
/>
</RelativeLayout>
Again, this is nested inside of the parent, RelativeLayout. In the preview, when clicking on the "Graphical Layout" tab, this looks like exactly what I want; EditText to the left of a small ImageButton, with correct proportions and margins. However, when I run this on my device, the LinearLayout is REVERSED, meaning now that the EditText is to the RIGHT of the ImageButton. The proportions and margins are still accurate though. Does anyone know what is going wrong here?
Note: I've already cleaned and refreshed my project; this was ineffective. I've also tried removing the layout_gravity attributes, and that did nothing.
Thanks

android message box layout implementation

I was trying to implement a message box similar with that of Hangout. I want the edittext to expand if more content is typed into it, with the button to the right remain at the bottom right corner.
My current implement is as follows. The button to the right will move up if the edit text expands due to "alignParentTop". But if I set "alignParentBottom" as true, the entire screen will get occupied by this relative layout. Any idea how to fix it
<RelativeLayout android:id="#+id/structured_relative_interaction"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:background="#E0E0E0">
<ImageButton android:id="#+id/structured_imagebutton_takePhoto"
android:layout_width="40dp"
android:layout_height="40dp"
android:layout_alignParentTop="true"
android:layout_alignParentRight="true"
android:background="#drawable/save_structured_button"
android:src="#drawable/take_photo"/>
<EditText android:id="#+id/structured_edittext_answer"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_toLeftOf="#id/structured_imagebutton_takePhoto"
android:layout_margin="5dp"
android:gravity="top"
android:maxLines="5"
android:padding="10dp"
android:hint="#string/structured_hint"
android:textColorHint="#B0B0B0"
android:inputType="textCapSentences|textMultiLine">
</EditText>
</RelativeLayout>

I was able to achieve it using the following layout (some ids for images and strings were changed to make it compileable):
<!--suppress AndroidLintUselessParent, AndroidLintContentDescription -->
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<RelativeLayout
android:id="#+id/structured_relative_interaction"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:gravity="bottom"
android:background="#E0E0E0">
<EditText
android:id="#+id/structured_edittext_answer"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_toLeftOf="#+id/structured_imagebutton_takePhoto"
android:layout_margin="5dp"
android:gravity="bottom"
android:maxLines="5"
android:padding="10dp"
android:hint="hint"
android:textColorHint="#B0B0B0"
android:inputType="textCapSentences|textMultiLine" />
<ImageButton
android:id="#+id/structured_imagebutton_takePhoto"
android:layout_width="40dp"
android:layout_height="40dp"
android:layout_alignParentRight="true"
android:layout_alignBottom="#id/structured_edittext_answer"
android:background="#drawable/ic_launcher" />
</RelativeLayout>
</RelativeLayout>
Will produce:
Seems it's common issue with ExitText and RelativeLayout (at least, I've seen some similar questions previously).

<EditText
android:id="#+id/write_post"
android:layout_width="match_parent"
android:layout_height="85dip"
android:ems="10"
android:gravity="top"
android:hint="#string/write_post"
android:inputType="textMultiLine"
android:textAppearance="?android:attr/textAppearanceSmall" >
</EditText>
set android:inputType to textMultiLine, android automatically expands edittext if the text exceeds from its boundry.

Edittext loses style when align_baseline used

I have a layout where I have RelativeLayout with some Edittext which use the default style and are baseline aligned with some Textfield. The issue is the Edittext are losing the default Holo Light style line (the line under the text). If I take out the baseline then the line is shown though, of course, the Edittext loses the alignment.
I suspect this is bug or at least a very strange behavior, but I will give it a try by asking here in SO :-)
This is how it looks (Edittexts are the blank spaces to the right of Opens and Closes TextViews):
This is my layout:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
android:layout_height="match_parent"
android:layout_width="0dip"
android:layout_weight="50"
android:orientation="vertical" >
<EditText
android:id="#+id/store_name_edit"
android:hint="#string/store_name"
android:layout_height="wrap_content"
android:layout_width="match_parent" />
<EditText
android:id="#+id/store_code_edit"
android:hint="#string/store_code"
android:layout_height="wrap_content"
android:layout_width="match_parent" />
<EditText
android:id="#+id/store_group_edit"
android:hint="#string/store_group"
android:layout_height="wrap_content"
android:layout_width="match_parent" />
<EditText
android:id="#+id/store_type_edit"
android:hint="#string/store_type"
android:layout_height="wrap_content"
android:layout_width="match_parent" />
<EditText
android:id="#+id/store_address_edit"
android:hint="#string/store_street"
android:layout_height="wrap_content"
android:layout_width="match_parent" />
<TextView
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:paddingTop="20dip"
android:textSize="20sp"
android:text="#string/store_description" />
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content" >
<TextView
android:id="#+id/opening"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="18sp"
android:text="#string/store_opening_hours" />
<TextView
android:id="#+id/opens"
android:layout_below="#id/opening"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="18sp"
android:text="#string/store_open" />
<EditText
android:id="#+id/opens_edit"
android:layout_toRightOf="#id/opens"
android:layout_alignBaseline="#id/opens"
android:layout_height="wrap_content"
android:layout_width="100dip"
android:textSize="18sp" />
<TextView
android:id="#+id/closes"
android:layout_alignBaseline="#id/opens"
android:layout_toRightOf="#id/opens_edit"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="18sp"
android:text="#string/store_close" />
<EditText
android:id="#+id/closes_edit"
android:layout_alignBaseline="#id/opens"
android:layout_toRightOf="#id/closes"
android:layout_height="wrap_content"
android:layout_width="100dip"
android:textSize="18sp" />
</RelativeLayout>
</LinearLayout>

My guess is the containing RelativeLayout somehow isn't expanding to allow for the lines on the EditTexts to show.
Change the containing RelativeLayout to:
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="100dp">
I realise this may not be the best solution but it's a start. Another option might be to try using alignParentBottom instead of baseline on all the "bottom" row elements.

Android text will not align to center

I have a TextView and 3 Buttons centered in a RelativeLayout, and the text in all three of them is left-justified with the parent center as the leftmost line.
I've tried changing the gravity of the TextView, Buttons, and layout but nothing is working and I'm baffled because I've never seen Android align text like this before.
I want the Button text to be centered within each Button and the top text to be center-justified.
An image of what it looks like is here: http://i.stack.imgur.com/9lHEd.png
Here's my xml:
<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" >
<TextView
android:id="#+id/textView1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_margin="20dp"
android:gravity="center_horizontal"
android:text="#string/greeting"
android:textAppearance="?android:attr/textAppearanceLarge" />
<Button
android:id="#+id/startQuizButton"
android:layout_width="280dp"
android:layout_height="wrap_content"
android:layout_below="#+id/textView1"
android:layout_centerHorizontal="true"
android:onClick="#string/startQuiz"
android:text="#string/start_quiz" />
<Button
android:id="#+id/lessonsButton"
android:layout_width="280dp"
android:layout_height="wrap_content"
android:layout_below="#+id/startQuizButton"
android:layout_centerHorizontal="true"
android:onClick="#string/startLesson"
android:text="#string/lessonsString" />
<Button
android:id="#+id/viewAllButton"
android:layout_width="280dp"
android:layout_height="wrap_content"
android:layout_below="#+id/lessonsButton"
android:layout_centerHorizontal="true"
android:onClick="#string/showAll"
android:text="#string/view_all" />

I included a RelativeLayout because you have it as your parent layout. However, i am not sure that it is needed. See if the following code is what you are looking for.
<?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:orientation="vertical" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center_horizontal"
android:text="Greetings" />
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Start Quiz" />
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Lessons" />
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="View all questions" />
</LinearLayout>
</RelativeLayout>

add in button tab android:gravity="center"...see if it works..

u need to set layout width and height to fill_parent and everything will work fine
<TextView
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:gravity="center"
android:text="your text" />

if you want to centre some text, then you could also do it this way:
<TextView
android:text="Quantity"
android:textSize="34sp"
android:textColor="#ffffff"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:fontFamily="sans-serif-light"
android:layout_centerHorizontal="true"
android:paddingTop="10dp"/>
here i have changed made it horozontal by using android:layout_centerHorizontal="true"which takes a boolean value of true or false, by making it true, it will automatically be centred on all devices
hope that helps

Android increase height of parent when textMultiLine wraps to new line

I have a fragment that shows a chat session and then below it an EditText and a Button
Right now I have the height of the RelativeLayout containing the EditText and Button hard coded.
How do i have the RelativeLayout height only be the height of a single line EditText and when the user types enough text to warrant a new line of text dynamically re-size the height to be just big enough to contain the now larger EditText?
For anyone that has used the Google Voice app or the stock messaging app you can see this in action when replying to a message.
I've include my current layout below.
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<RelativeLayout
android:id="#+id/bottom_bar"
android:layout_width="fill_parent"
android:layout_height="90dp"
android:layout_alignParentBottom="true"
android:minHeight="60dp" >
<ImageButton
android:id="#+id/sendButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="false"
android:layout_alignParentRight="true"
android:layout_centerInParent="false"
android:layout_centerVertical="true"
android:background="#null"
android:onClick="sendMessage"
android:paddingBottom="15dp"
android:paddingRight="5dp"
android:paddingTop="10dp"
android:src="#drawable/send" />
<EditText
android:id="#+id/sendText"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="false"
android:layout_centerVertical="true"
android:layout_marginBottom="5dp"
android:layout_marginTop="5dp"
android:layout_toLeftOf="#id/sendButton"
android:hint="Enter Message"
android:inputType="textMultiLine" >
</EditText>
</RelativeLayout>
<fragment
android:id="#+id/chatfragment"
android:name="android.support.v4.app.ListFragment"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_above="#id/bottom_bar"
android:layout_alignParentTop="true" />
</RelativeLayout>

Have you tried setting the height of your nested RelativeLayout to wrap_content?
<RelativeLayout
android:id="#+id/bottom_bar"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:minHeight="60dp" >