Develop Reference

Why view elements are going out of the page

I have a keyword search option with EditView and a button in my android app, which in ADT looks perfect.
But when i run the program, the EditView expand beyond the viewing area and search button disappears because it goes out of page.
Xml for this is:
<TableRow
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<LinearLayout
android:id="#+id/detail_ll"
style="#style/search_bg_style"
android:layout_width="wrap_content"
android:layout_height="wrap_content" >
<EditText
android:id="#+id/keyword_detail"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="0.7"
android:ems="10"
android:hint="#string/keyword" />
<Button
android:id="#+id/button_search"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="0.3"
android:text="#string/search" />
</LinearLayout>
</TableRow>
Please help me in getting this in viewing area..

can you post the entire xml?
i mean with the
<TableLayout />
main tag
try setting android
android:layout_weight="1"
for both
or try android:layout_weight="1.5"
for edit text and
android:layout_weight="0.5"
for the button

I think you should make the android:layout_width="wrap_content" to android:layout_width="match_parent" or any fixed width (in dps) in the TableRow element.
layout_weight attribute divides a pre-known space according to its weight which is not present in this case.

Here you have to TableRow and LinearLayout height MatchParent and
give Weightsum="1" to LinearLayout it will fixed your problem and also remove android:ems property from Edittext
Hope this Help you.

Button size and padding within RelativeLayout

I'm attempting to create a a Heading + button similar to the Google Music App, e.g. where there is a "Songs" Header on the Left and then on the right there is a Button with the text "X more"..
I've using a RelativeLayout for the TextView and Button
My problem is that the button is taking up the size of the layout that contains the text the height is all wrong and the padding doesn't seem to do anything.
<ScrollView
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="wrap_content"
android:orientation="vertical" >
[REMOVED for clarity]
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#color/list_foreground"
android:orientation="vertical" >
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="10dp"
android:text="#string/photos"
android:textAppearance="?android:attr/textAppearanceMedium" />
<Button
android:id="#+id/photo_button"
style="?android:attr/buttonStyleSmall"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:background="#color/actionbar_background"
android:padding="10dp"
android:text="test" />
</RelativeLayout>
What am I doing wrong here?

RelativeLayouts are designed to have children in the layout "relative" to each other. In other words, if you want the Button to the right of the Textview, you need to tell it.
Because you are aligning relative to the parent LEFT / RIGHT, it appears that things are "kind of" working.
You may be better off with a LinearLayout, depending on your needs. LinearLayouts use "orientation" not RelativeLayouts.
You should look over some tutorials (like this one: http://mobile.tutsplus.com/tutorials/android/android-layout/) but ultimately you will probably put your button in first and then your text view so that the textview content will wrap appropriately.

To get the same effect as the Music App I ended up using a RelativeLayout but instead of a Button I'm using another TextView, this is giving the impression it's a button but it gives me more scope to format the background etc. I think just setup a OnClickListener in the code
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/photo_title">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_marginLeft="10dp"
android:text="#string/photos"
android:textAppearance="?android:attr/textAppearanceLarge" />
<TextView
android:id="#+id/more_photo_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_centerVertical="true"
android:layout_marginRight="10dp"
android:background="#color/actionbar_background"
android:paddingLeft="5dp"
android:paddingRight="5dp"
android:text="10 MORE"
android:textColor="#color/button_text"
android:textSize="12sp" />
</RelativeLayout>

Recreating CheckedTextView's Functionality

I'd like to recreate the CheckedTextView's functionality using my own custom views so I can have two TextViews on the left with a CheckBox on the right, centered vertically between the two TextViews. I have the Layout working for it, which I will include below. I also have it so that when you click on the outer LinearLayout (LinearLayout1) it will pass that click to the checkbox. The only thing that I can't figure out is when you press down on a checkbox it briefly highlights the checkbox (in yellow on my device) before marking it checked. I'd like to have it do the same if you touch anywhere on the outer LinearLayout, but I don't know where I'd need to hook in to make that happen.
Here is my layout.xml
<LinearLayout
android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:id="#+id/LinearLayout1">
<LinearLayout
android:orientation="vertical"
android:layout_height="wrap_content"
android:layout_width="0dip"
android:layout_weight="1"
android:id="#+id/LinearLayout2">
<TextView
android:id="#+id/FieldValueTextView"
android:text="Value"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceMedium" />
<TextView
android:id="#+id/FieldLabelTextView"
android:text="Label"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall" />
</LinearLayout>
<CheckBox
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:layout_toRightOf="#id/LinearLayout2"
android:id="#+id/CheckBox"
android:gravity="center_vertical" />
</LinearLayout>
Thanks,
Dan

The problem I was experiencing was solved by putting the following android:focusable="false" on the CheckBox and the two TextViews so that when the ListView is clicked, it gets the focus, not the inner views.
Hope that helps someone else.

How to get a layout where one text can grow and ellipsize, but not gobble up the other elements on the layout

I've read some of the other posts here such as Two TextViews side by side, only one to ellipsize? but I'm still having an issue with my layout.
I have a list item layout, and I want each item in the list to look like this:
| (Expanding TextView #1) (TextView #2) (Image) |
TextView #2 and Image must always be visible.
Right now I'm using the following layout:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/mainItem"
android:layout_width="fill_parent"
android:layout_height="80dp"
android:background="#drawable/myBackground"
android:onClick="onClick"
android:longClickable="true">
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="80dp"
android:layout_gravity="center_vertical|left"
android:gravity="center_vertical|left"
android:layout_toLeftOf="#+id/myImage"
android:layout_alignParentLeft="true">
<TextView
android:id="#+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingLeft="14dp"
android:singleLine="true"
android:ellipsize="marquee"
android:marqueeRepeatLimit="0"/>
<TextView
android:id="#+id/testView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
</LinearLayout>
<ImageView
android:id="#+id/myImage"
android:layout_width="wrap_content"
android:layout_height="80dp"
android:layout_gravity="center_vertical"
android:layout_alignParentRight="true"
android:paddingRight="14dp"
android:onClick="onClick"
android:src="#drawable/myIcon"/>
</RelativeLayout>
I've read from the other posts that adding a layout_weight="1" to TextView#1 will force TextView #2 to be shown, and it does, but the problem is that this forces TextView #2 to be right-aligned because it causes TextView #1 to expand even when it doesn't have to.
I'm pretty stumped on this now... could anyone help? :)
UPDATE
I was able to fix this by using a TableLayout and the shrink & stretch column properties. By playing around with that it finally worked the way I wanted it to.

This will truncate (if needed) the text in the first TextView, keep the text in the second TextView as is, and align and keep as is the text in the third TextView.
<TableLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:shrinkColumns="0"
android:stretchColumns="2">
<TableRow>
<TextView
android:layout_height="wrap_content"
android:ellipsize="end"
android:maxLines="1"/>
<TextView
android:layout_height="wrap_content"
android:maxLines="1"/>
<TextView
android:layout_height="wrap_content"
android:gravity="end"
android:maxLines="1"/>
</TableRow>
</TableLayout>

If I were you I'd probably switch the row from LinearLayout to RelativeLayout, that way you can align image to the parent right, butt textview2 right up next to it and just align textview1 with the parent left and it can resize without affecting the other two fields.

Centering a TextView while keeping it to the right of a button?

I'm pretty sure I've done this before, but I've forgotten how.
Here's the problem:
I've got a button and a textview, and I want the textview to be centered, while the button is on the left side.
No problem? Just put them in a relativelayout, make the textview centerinparent, and the button alignparentleft.
But now I'm going to dynamically change the text, so it can potentially be written on top of the button! I'll just add toRightOf="#id/button" on the textview. No, now it's no longer centered.
I wish I could provide a screenshot, but it seems the computer is out of memory and can't do that.
Here's some code: http://pastebin.com/3N70Vjre (Since I can't paste xml...?)
<RelativeLayout
android:id="#+id/header"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentTop="true">
<Button
android:id="#+id/leftbutton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_centerVertical="true"
android:text="text!"
/>
<TextView
android:id="#+id/toptext"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="#android:color/white"
android:layout_toRightOf="#id/leftbutton"
android:layout_centerInParent="true"
android:textSize="16sp"
android:textStyle="bold"
android:text="Text!"
android:singleLine="true"
/>
</RelativeLayout>

Try this (unfortunately I'm at work so can't jump into Eclipse to get you some code) -
Change the layout_width of the TextView to fill_parent.
Set the gravity of the TextView to center (so the text centers inside the TextView)
Set the layout_weight of the Button to 1 and the layout_weight of the TextView to 2. Note that you may have to fudge with these numbers to get the layout you're looking for.
This should center the text of the TextView after the Button, though it will not center the TextView itself. You can accomplish that by replacing the TextView with a container (Linear/Relative Layout) and doing the same method as above on the Layout instead of the TextView. You would then put your TextView inside the container and set the container's gravity to "center".
Hope this helps point you in the right direction :)

You can try this (pseudo-code):
<RelativeLayout>
<Button>
<LinearLayout toLeftOf="toptext" type="horizontal">
<TextView gravity="center">
</LinearLayout>
</RelativeLayout>
You might have to have the LinearLayout as width="fill_parent". Not sure if that will work nor not. You can subsequently try some of the things listed here: http://thinkandroid.wordpress.com/2010/01/14/how-to-position-views-properly-in-layouts/

Try declaring the TextView first, then aligning the button to the left of the text view. Keep in mind you may run into issues if the TextView becomes too wide.
EDIT: I see, so you're trying to do something sort of like the iPhone's header with back/next buttons (similar anyway). Try this modification. I still believe you're going to run into issues if the TextView gets large enough to hit the Button, though.
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/header"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
>
<TextView
android:id="#+id/toptext"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="#android:color/white"
android:layout_alignParentCenter="true"
android:textSize="16sp"
android:textStyle="bold"
android:text="Text!"
android:singleLine="true"
/>
<Button
android:id="#+id/leftbutton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:text="text!"
/>
</RelativeLayout>
Try this FrameLayout instead. This may do more what you're expecting:
<FrameLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<TextView
android:id="#+id/toptext"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:textColor="#android:color/white"
android:textSize="16sp"
android:textStyle="bold"
android:text="Text!"
android:singleLine="true"
/>
<Button
android:id="#+id/leftbutton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Text!"
/>
</FrameLayout>