Develop Reference

Android spacing two fragments on same screen

I have an activity that displays two fragments on the screen, one under the other. The top fragment is the user interface for the activity and the second is a custom ListView. I have two fragments that can fill the top slot, each a different size. The ListView is used for both.
The problem I'm facing is that there is a major gap between the top and bottom fragments. I know that it has something to do with the layout_weight attribute, and layout_weight is the only way I've seen to control how much of the screen a fragment commands.
What I would like to find out is if there is a way to dynamically resize the reserved fragment area when the fragment is loaded, or if I'm stuck with this ugly gap.
Here is my layout:
<?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:orientation="vertical" >
<TabHost
android:id="#android:id/tabhost"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<LinearLayout
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<TabWidget
android:id="#android:id/tabs"
android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_weight="0"
/>
<FrameLayout
android:id="#android:id/tabcontent"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_weight="0"/>
<FrameLayout
android:id="#+android:id/realtabcontent1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_weight="1"/>
<FrameLayout
android:id="#+android:id/realtabcontent2"
android:layout_width="fill_parent"
android:layout_height="0dp"
android:layout_weight="2" />
</LinearLayout>
</TabHost>
</LinearLayout>

I have figured it out. The layout height of both FrameLayouts hosting the fragments should be set to android:layout_height="wrap_content" and the layout_weight line should be removed. Then the spacing is handled dynamically on a fragment being loaded to that FrameLayout.

Android textView scroll

I have been trying to develop an android app that contain an activity which is scrollable
and inside the activity, I have 2 textView which I want them to be scrollable as well.
My problem is that
whenever I touch inside the textView the scrolls show up but the main activity part which is the linearLayout directly steel the focus and no longer the textView scroll
the way I have it now is setup for the textView to scroll in the xml file I have done that.
and if I keep raising my finger and put it back on the screen trying to scroll the textView I can move a little bit but as I said, the layout that contains the textView capture the focus and leave me unable to scroll the textView.
I hope I did explain my problem very well.
Please any suggestion to help.
let me explain how the app is built first
first part is: the main(first) activity is a tabHost
which I defined as scrollable
<?xml version="1.0" encoding="utf-8"?>
<TabHost xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#android:id/tabhost"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<ScrollView
android:id="#+id/scrollView1"
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<FrameLayout
android:id="#android:id/tabcontent"
android:layout_width="match_parent"
android:layout_height="422dp" >
</FrameLayout>
<TabWidget
android:id="#android:id/tabs"
android:layout_width="match_parent"
android:layout_height="63dp" >
</TabWidget>
</LinearLayout>
</ScrollView>
</TabHost>
where I am having problem with is this activity
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:background="#color/light_gray_color"
android:layout_height="match_parent"
android:layout_width="match_parent"
android:weightSum="1"
android:orientation="vertical"
android:baselineAligned="false">
<LinearLayout
android:id="#+id/linearLayout3"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="0.04">
<TextView
android:textAppearance="?android:attr/textAppearanceLarge"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:textColor="#color/black_color"
android:layout_gravity="center_horizontal"
android:text="#string/display_label"
android:id="#+id/display_label">
</TextView>
</LinearLayout>
<LinearLayout
android:id="#+id/linearLayout2"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="0.83"
android:baselineAligned="false"
android:orientation="horizontal" >
<ScrollView
android:id="#+id/english_scrollView"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_weight="0.03" >
<TextView
android:id="#+id/display_english_textView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="2px"
android:layout_marginRight="2px"
android:layout_weight="0.03"
android:background="#drawable/black_rectangle"
android:focusable="true"
android:paddingLeft="2px"
android:paddingRight="2px"
android:scrollbars="vertical"
android:textColor="#color/black_color" />
</ScrollView>
<ScrollView
android:id="#+id/translation_scrollView"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_weight="0.03" >
<TextView
android:id="#+id/display_translation_textView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="2px"
android:layout_marginRight="2px"
android:layout_weight="0.03"
android:background="#drawable/black_rectangle"
android:focusable="true"
android:paddingLeft="2px"
android:paddingRight="2px"
android:scrollbars="vertical"
android:textColor="#color/black_color" />
</ScrollView>
</LinearLayout>
</LinearLayout>

I guess you should cut <ScrollView> out of the first xml
<?xml version="1.0" encoding="utf-8"?>
<TabHost xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#android:id/tabhost"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<FrameLayout
android:id="#android:id/tabcontent"
android:layout_width="match_parent"
android:layout_height="422dp" >
</FrameLayout>
<TabWidget
android:id="#android:id/tabs"
android:layout_width="match_parent"
android:layout_height="63dp" >
</TabWidget>
</LinearLayout>
</TabHost>

My understanding is that you have a vertically scrolling activity, which contains two vertically scrolling text views? If so, you can't do it. Its not just a poor design choice, its literally impossible to tell which view the user intends to scroll when they make swipe motion. You can have horizontal scrolling inside a vertically scrolling view, or vice versa. You can't have horizontal scrolling inside horizontal scrolling or vertical scrolling inside vertical scrolling.
I believe this is mentioned in the listview talk in the 2010 google io conference: http://www.youtube.com/watch?v=wDBM6wVEO70

Layout with ListView and TabHost on Android

I want make a layout like this:
The thing with the action bar is fine, I made it work. But the left list with the images is displayed over the whole display when I create a ListView, so you can't see the TabHost on the right side. So how can I make a ListView on the left and a TabHost right, so that the list is 20% of the display and the tab 80%?
So that you can select an image in the list and do something with it in the tabs. It's for tablets and I work with the Honeycomb 3.0 API.
My Layout is like this:
<?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:orientation="horizontal">
<LinearLayout
android:id="#+id/linearLayout2"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:orientation="vertical" >
<ListView
android:id="#+id/id_list_view"
android:layout_width="wrap_content"
android:layout_height="fill_parent" />
</LinearLayout>
<LinearLayout
android:id="#+id/linearLayout2"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:orientation="vertical" >
<TabHost
android:id="#+id/tabhost"
android:layout_width="wrap_content"
android:layout_height="match_parent" >
<LinearLayout
android:id="#+id/linearLayout3"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<TabWidget
android:id="#android:id/tabs"
android:layout_width="match_parent"
android:layout_height="wrap_content" >
</TabWidget>
<FrameLayout
android:id="#android:id/tabcontent"
android:layout_width="match_parent"
android:layout_height="match_parent" >
</FrameLayout>
</LinearLayout>
</TabHost>
</LinearLayout>

I recommend you to make this screen using Fragments, it's the best and the correct way to achieve what you want

Keep layout weight property for both vertical Linear Layouts as 0.2 and 0.8 respectively and keep layout width equal to 0 pixels for both vertical Linear Layouts.

Button at Bottom

Im not very good in creating android layouts so I am not able to align the button to the bottom in the MainView.
Picture:
Layout:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout android:id="#+id/linearLayout1" android:layout_width="fill_parent" android:layout_height="wrap_content" xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical">
<ListView android:id="#+id/lv_pizza" android:layout_width="fill_parent"
android:layout_height="wrap_content" android:layout_weight="1"></ListView>
<Button android:layout_width="fill_parent" android:id="#+id/bt_add"
android:layout_height="wrap_content" android:text="hinzufügen"></Button>
<RelativeLayout android:layout_width="fill_parent" android:id="#+id/relativeLayout2" android:layout_height="fill_parent">
</RelativeLayout>
</LinearLayout>
Please help

This works for a linear layout, note the layout_weight 1 on the list -- that's what pushes the button to the bottom:
<?xml version="1.0" encoding="utf-8"?>
<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:orientation="vertical">
<ListView android:id="#+id/lv_pizza"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1" />
<Button android:id="#+id/bt_add"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="hinzufügen" />
</LinearLayout>
This then looks like this in the UI editor:

Hi you can set like this
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout android:id="#+id/linearLayout1" android:layout_width="fill_parent" android:layout_height="wrap_content" xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical">
<ListView android:id="#+id/lv_pizza" android:layout_width="fill_parent"
android:layout_above="#+id/bt_add" android:layout_height="fill_parent" ></ListView>
<Button android:layout_width="fill_parent" android:id="#+id/bt_add"
android:layout_gravity="bottom" android:layout_height="wrap_content" android:text="hinzufügen"></Button>
</RelativeLayout>

Removing the RelativeLayout will push the button to bottom of the screen...

Use a layout_weight for the components inside the LinearLayout. If the ListView has a weight of 1.0, it should push the button to the bottom. I've done this with a ScrollLayout and it works well, allowing the component inside the scroll layout to actually scroll. You could put your ListView into a ScrollLayout to let it grow beyond the visible size.
Also, the second relativelayout also isn't necessary as it doesn't add anything.

You can set a marginTop in the Button until the bottom or change the layout to relative and set the position.

Keep Buttons at bottom of layout visible when list is long

I have a layout that is three linear layouts. The top has some icons and the middle has a tabhost. Each tabhost has a list inside it. The bottom linearlayout has two buttons that should stay at the bottom on the screen at all times. The problem is when a list in the tabhost gets too long, it displays over the buttons. I tried to find some way to get the buttons to bedisplayed over the list but have failed so far. Any help would be appreciated. :-) Thanks!
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="wrap_content">
<TabHost
android:id="#android:id/tabhost"
android:layout_width="fill_parent"
android:layout_height="wrap_content">
<LinearLayout
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="395dp"
android:background="#000000">
<TabWidget
android:id="#android:id/tabs"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
/>
<FrameLayout
android:id="#android:id/tabcontent"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:padding="5dp"
/>
</LinearLayout>
</TabHost>
</LinearLayout>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:gravity="fill"
android:layout_margin="0dp"
android:padding="0dp"
>
<Button
android:id="#+id/btnGroup"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Ptt"
android:layout_gravity="bottom"
android:layout_weight="2"
android:hapticFeedbackEnabled="true"/>
<Button
android:id="#+id/btnMenu"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Menu"
android:layout_gravity="bottom"
android:layout_weight="2"
android:hapticFeedbackEnabled="true"/>
</LinearLayout>

I generally put my LinearLayouts inside of a ScrollView to solve this situation. (The buttons stay outside) It allows your buttons to stay in the correct location at all times and the user scroll the rest of the view.
ScrollView Docs