Layout not readjusting properly to orientation change - android

I have been working on an app to start out on android. I have run into the problem that my layout will not show correctly when it goes to a different orientation other like this:
http://imgur.com/a/aPe2p
Here is my vertical layout 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:orientation="vertical"
android:padding="3dip" >
<EditText
android:id="#+id/passText"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="5"
android:hint="Passcode"
android:inputType="textPassword" />
<EditText
android:id="#+id/messageText"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1"
android:gravity="top|left"
android:hint="Message" >
<requestFocus />
</EditText>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="5"
android:orientation="horizontal"
android:weightSum="100" >
<Button
android:id="#+id/encodeButton"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="50"
android:text="Encode" />
<Button
android:id="#+id/decodeButton"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="50"
android:text="Decode" />
</LinearLayout>
</LinearLayout>
Here is my landscape layout 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:orientation="vertical"
android:padding="8dip" >
<EditText
android:id="#+id/passText"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="2"
android:hint="Passcode"
android:inputType="textPassword" >
<requestFocus />
</EditText>
<EditText
android:id="#+id/messageText"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="2"
android:gravity="top|left"
android:hint="Message" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="2"
android:orientation="horizontal"
android:weightSum="100" >
<Button
android:id="#+id/encodeButton"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="50"
android:text="Encode" />
<Button
android:id="#+id/decodeButton"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="50"
android:text="Decode" />
</LinearLayout>
</LinearLayout>


Try setting your android:layout_height on the items expanding/shrinking to wrap_content. If you read here:
http://developer.android.com/reference/android/view/ViewGroup.LayoutParams.html#attr_android:layout_height
It talks about the three possible values and what they do.
fill_parent: The view should be as big as its parent (minus padding). This constant is deprecated starting from API Level 8 and is replaced by match_parent.
match_parent: The view should be as big as its parent (minus padding). Introduced in API Level 8.
wrap_content: The view should be only big enough to enclose its content (plus padding).
You should be using wrap_content on a couple of those items. Below I added an example of which heights I would have changed for your vertical layout:
<EditText
android:id="#+id/passText"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="5"
android:hint="Passcode"
android:inputType="textPassword" />
<EditText
android:id="#+id/messageText"
android:layout_width="match_parent"
android:layout_height="fill_parent"
android:layout_weight="1"
android:gravity="top|left"
android:hint="Message" >
<requestFocus />
</EditText>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="5"
android:orientation="horizontal"
android:weightSum="100" >
<Button
android:id="#+id/encodeButton"
android:layout_width="match_parent"
android:layout_height="fill_parent"
android:layout_weight="50"
android:text="Encode" />
<Button
android:id="#+id/decodeButton"
android:layout_width="match_parent"
android:layout_height="fill_parent"
android:layout_weight="50"
android:text="Decode" />
</LinearLayout>

Related

Organizing layouts with edit text at bottom?

I wanted to make a layout with 3 LinearLayouts. In the 2nd LinearLayout I would have a ListView and the 3rd LinearLayout I would have an EditText and Button at the bottom. This was my attempt:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:fresco="http://schemas.android.com/apk/res-auto"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:id="#+id/view_post"
android:layout_width="fill_parent"
android:layout_height="200dp"
android:background="#color/com_facebook_blue">
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:id="#+id/view_status"/>
</LinearLayout>
<LinearLayout
android:id="#+id/view_comments"
android:layout_below="#+id/view_post"
android:layout_width="match_parent"
android:layout_height="250dp">
<ListView
android:id="#+id/lv_comments_feed"
android:layout_width="fill_parent"
android:layout_height="wrap_content">
</ListView>
</LinearLayout>
<LinearLayout
android:layout_below="#+id/view_comments"
android:id="#+id/send_message"
android:layout_width="match_parent"
android:layout_height="50dp"
android:layout_alignParentBottom="true"
android:orientation="horizontal" >
<EditText
android:id="#+id/write_comment"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical|center_horizontal"
android:layout_weight="5"
android:gravity="top|left"
android:inputType="textMultiLine"
android:scrollHorizontally="false" />
<Button
android:id="#+id/send_comment"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical|center_horizontal"
android:gravity="center"
android:text="send"
android:textAppearance="?android:attr/textAppearanceMedium" />
</LinearLayout>
</RelativeLayout>
Now the design looks great but when I load the app on my phone, I have 2 problems:
I don't want to hardcode the LinearLayout heights. I have looked into layout_weight but I can't seem to have these layout_weights work without running into the 2nd problem below:
When I click the EditText, the EditText is hidden even though I have declared android:windowSoftInputMode="adjustResize|stateHidden" in my activity and I'm not sure why that's happening. Also, the EditText and Button are not directly at the bottom of the screen which is what I would want. Any help is appreciated, thanks!

you don't need to add listview as child of linear layout. and avoid fill_parent & use match_parent. if first linear layout is only for textview then don't use it inside of linearlayout. or only use wrap_content instead of a specific layout_height
Here i made some changes hope it will work
<?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">
<LinearLayout
android:id="#+id/view_post"
android:layout_width="match_parent"
android:layout_height="200dp"
android:background="#222dc9">
<TextView
android:id="#+id/view_status"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</LinearLayout>
<ListView
android:id="#+id/listView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_above="#+id/send_message"
android:layout_below="#id/view_post"
></ListView>
<LinearLayout
android:id="#+id/send_message"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:padding="5dp"
android:layout_alignParentBottom="true"
android:orientation="horizontal">
<EditText
android:id="#+id/write_comment"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical|center_horizontal"
android:layout_weight="5"
android:gravity="top|left"
android:inputType="textMultiLine"
android:scrollHorizontally="false" />
<Button
android:id="#+id/send_comment"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical|center_horizontal"
android:gravity="center"
android:text="send"
android:textAppearance="?android:attr/textAppearanceMedium" />
</LinearLayout>
</RelativeLayout>
and use in Manifest with activity name is
android:windowSoftInputMode="adjustPan"

<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"
tools:context=".MainActivity">
<RelativeLayout
android:id="#+id/view_post"
android:layout_width="match_parent"
android:background="#color/material_grey_300"
android:padding="5dp"
android:layout_height="wrap_content">
<TextView
android:id="#+id/view_status"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="hello" />
</RelativeLayout>
<RelativeLayout
android:id="#+id/view_comments"
android:layout_above="#+id/send_message"
android:layout_below="#+id/view_post"
android:layout_width="match_parent"
android:background="#color/material_deep_teal_200"
android:padding="10dp"
android:layout_height="match_parent">
<ListView
android:id="#+id/lv_comments_feed"
android:layout_width="match_parent"
android:layout_height="wrap_content">
</ListView>
</RelativeLayout>
<LinearLayout
android:id="#+id/send_message"
android:background="#color/material_blue_grey_800"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:layout_alignParentBottom="true">
<EditText
android:id="#+id/write_comment"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:inputType="textMultiLine"
android:scrollHorizontally="false" />
<Button
android:id="#+id/send_comment"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="3dp"
android:layout_weight="1"
android:text="send" />
</LinearLayout>
</RelativeLayout>

Buttons aren't shown in the LinearLayout

I want that it looks so (this is a screenshot from the Graphical Layout editor):
So I created the 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" >
<LinearLayout
android:id="#+id/controls"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal" >
<Button
android:id="#+id/clearButton"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:text="#string/clearButtonText"
android:layout_weight="1"
/>
<EditText
android:id="#+id/searchText"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_weight="5"
android:hint="#string/defaultSearchText"
>
<requestFocus/>
</EditText>
<Button
android:id="#+id/addButton"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:text="#string/addButtonText"
android:layout_weight="1"
/>
</LinearLayout>
<ListView
android:id="#+id/list_view"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1" />
</LinearLayout>
But when I ran my app on the emulator I saw:
When I clicked on the loupe there was still no sign of the buttons.

I think you should use weights for the width of the elements of your horizontal layout. This also means the width of the elements with a weight should be 0dp
<LinearLayout
android:id="#+id/controls"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal" >
<Button
android:id="#+id/clearButton"
android:layout_width="0dp"
android:layout_weight="0.2"
android:layout_height="match_parent"
android:text="#string/clearButtonText"
/>
<EditText
android:id="#+id/searchText"
android:layout_width="0dp"
android:layout_weight="0.6"
android:layout_height="match_parent"
android:hint="#string/defaultSearchText"
>
<requestFocus/>
</EditText>
<Button
android:id="#+id/addButton"
android:layout_width="0dp"
android:layout_weight="0.3"
android:layout_height="match_parent"
android:text="#string/addButtonText"
/>
</LinearLayout>

Why is HorizontalScrollView scrolling to right?

The below XML contains an EditText control. As soon as I touch it, the softkeyboard appears but the HorizontalScrollView scrolls to the right so I cannot see the EditText!
Can somebody please tell me what is wrong with the below XML and why it is doing this?
Please excuse hardcoded widths - this is only a test bit of code for sanity checking.
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<HorizontalScrollView
android:id="#+id/testScrollView"
android:layout_width="1280dp"
android:layout_height="match_parent"
android:scrollbars="horizontal"
android:background="#00FF00">
<LinearLayout
android:id="#+id/layout"
android:layout_width="2560dp"
android:layout_height="match_parent"
android:orientation="horizontal">
<LinearLayout
android:id="#+id/mLeftBaseLinearLayout"
android:layout_width="1280dp"
android:layout_height="match_parent"
android:orientation="vertical"
android:background="#FF0000">
<EditText
android:id="#+id/mEditText"
android:layout_width="match_parent"
android:layout_height="40dp"
android:background="#BBBBBB"
android:gravity="center"
android:text="EditText"
android:textColor="#FFFF00"
android:textSize="30dp"
android:singleLine="true"
android:clickable="true"
android:editable="true"
android:focusable="true"
android:focusableInTouchMode="true"
android:inputType="text"/>
<ListView
android:id="#+id/mListView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:background="#80FFFFFF" >
</ListView>
</LinearLayout>
<LinearLayout
android:id="#+id/linLayout"
android:layout_width="1280dp"
android:layout_height="match_parent"
android:orientation="vertical"
android:background="#00FF00">
<Button
android:layout_width="600dp"
android:layout_height="wrap_content"
android:text="Button1" />
<Button
android:layout_width="600dp"
android:layout_height="wrap_content"
android:text="Button2" />
</LinearLayout>
</LinearLayout>
</HorizontalScrollView>
</FrameLayout>
My tablet is running Android 4.2.1

Ok, I have been looking at your layout and made a few changes and it looks ok on my computer.
Firstly, mEditText is unnecessary and avoidable. If you want a header for mListView
yourListView.addHeaderView(View v, Object data, boolean isSelectable);
This is what I did:
<?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" >
<HorizontalScrollView
android:id="#+id/testScrollView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#00FF00"
android:scrollbars="horizontal" >
<LinearLayout
android:id="#+id/layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal" >
<LinearLayout
android:id="#+id/mLeftBaseLinearLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#FF0000"
android:orientation="vertical" >
<EditText
android:id="#+id/mEditText"
android:layout_width="match_parent"
android:layout_height="40dp"
android:background="#BBBBBB"
android:clickable="true"
android:editable="true"
android:focusable="true"
android:focusableInTouchMode="true"
android:gravity="center"
android:inputType="text"
android:singleLine="true"
android:text="EditText"
android:textColor="#FFFF00"
android:textSize="30dp" />
<ListView
android:id="#+id/mListView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:background="#80FFFFFF" >
</ListView>
</LinearLayout>
<LinearLayout
android:id="#+id/linLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#00FF00"
android:orientation="vertical" >
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Button1" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Button2" />
</LinearLayout>
</LinearLayout>
</HorizontalScrollView>
</LinearLayout>
If this does not work we need to look at your code.

I found my solution - override scrollTo() and do absolutely nothing.

how to set a button at the bottom of a screen when the parent is a scroll view?

I have a scrollView (this is a solution to support landscape computability)
and in it one child- linearLayout.
I want to pose a button at the bottom of a screen.
layout_height = match_parent is problematic as the scroll can be infinite.
How can I do this, to be compatible to all screen resolution?
this is my xml
<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res/com.m"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/blue_bg" >
<LinearLayout
android:id="#+id/rootLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center_horizontal"
android:orientation="vertical" >
<com.m.view.text.mTextView
android:id="#+id/verifyHeaderText"
style="#style/textOnBg"
android:layout_gravity="center_horizontal"
android:layout_marginBottom="30dp"
android:layout_marginTop="50dp"
android:text="ENTER VERIFICATION CODE"
android:textAllCaps="true"
android:textColor="#android:color/white"
app:font_type="varela" />
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#android:color/white"
android:paddingBottom="5dp"
android:paddingLeft="25dp"
android:paddingRight="25dp"
android:paddingTop="5dp" >
<LinearLayout
android:id="#+id/inputBox"
android:layout_width="match_parent"
android:layout_height="50dp"
android:layout_gravity="center_horizontal"
android:gravity="center"
android:background="#drawable/input_box_idle"
android:orientation="horizontal" >
<EditText
android:id="#+id/verificationCodeEditText"
style="#style/textOnBg"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#android:color/transparent"
android:hint="- - - - -"
android:inputType="number"
android:maxLength="5"
android:textColor="#00bcfe"
android:textSize="25dp"
android:textStyle="italic" >
</EditText>
</LinearLayout>
</LinearLayout>
<Button
android:id="#+id/continueButton"
style="#style/textOnBg"
android:layout_width="250dp"
android:layout_height="50dp"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:layout_marginBottom="10dp"
android:background="#drawable/btn_selector"
android:text="Continue"
android:textColor="#00bcfe"
android:textSize="16dp"
android:textStyle="italic" />
</RelativeLayout>
</LinearLayout>
</ScrollView>
this is the result on wide-screen
The button is in the bottom of the scroll which spans 3/4 of the whole screen

Add android:fillViewport="true" to your scrollview:
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res/com.m"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/blue_bg"
android:fillViewport="true" >

Apply this to your layout:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<!-- Your scroll view -->
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_alignParentTop="true"
android:layout_marginBottom="#dimen/ar_button_height"
android:gravity="center" >
<Button
android:id="#+id/button_at_bottom"
android:layout_width="match_parent"
android:layout_height="#dimen/ar_button_height"
android:layout_alignParentBottom="true"
android:gravity="center"
android:orientation="horizontal"
android:showDividers="middle" >
</Button>
</ScrollView>
</RelativeLayout>

Not sure if there is a better solution, but you could put your scroll view inside a relative layout and have your button outside the scroll view and set android:layout_alignParentBottom="true" on the button

If you want to set the button at the bottom you need to implement your layout with weight.
First of all the scrollview can only have one child layout inside it.
Secondly add your content layout inside the child layout of it, set the layout_height to 0dp, and do remember to set the weight to 1.
And at last add your button at the bottom of your content layout and set its height and set the weight to be 0.
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<ScrollView
android:id="#+id/scrollMain"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:overScrollMode="always"
android:background="#00000000"
android:scrollbars="none">
<LinearLayout
android:overScrollMode="always"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scrollbars="vertical"
android:background="#FFFFFF"
android:paddingTop="5dp">
<LinearLayout
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1">
</LinearLayout>
<Button android:layout_width="match_parent"
android:layout_height="35dp"
android:layout_weight="0" />
</LinearLayout>
</ScrollView>
</LinearLayout>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
android:id="#+id/rootLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center_horizontal"
android:orientation="vertical" >
<com.m.view.text.mTextView
android:id="#+id/verifyHeaderText"
style="#style/textOnBg"
android:layout_gravity="center_horizontal"
android:layout_marginBottom="30dp"
android:layout_marginTop="50dp"
android:text="ENTER VERIFICATION CODE"
android:textAllCaps="true"
android:textColor="#android:color/white"
app:font_type="varela" />
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#android:color/white"
android:paddingBottom="5dp"
android:paddingLeft="25dp"
android:paddingRight="25dp"
android:paddingTop="5dp" >
<LinearLayout
android:id="#+id/inputBox"
android:layout_width="match_parent"
android:layout_height="50dp"
android:layout_gravity="center_horizontal"
android:gravity="center"
android:background="#drawable/input_box_idle"
android:orientation="horizontal" >
<EditText
android:id="#+id/verificationCodeEditText"
style="#style/textOnBg"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#android:color/transparent"
android:hint="- - - - -"
android:inputType="number"
android:maxLength="5"
android:textColor="#00bcfe"
android:textSize="25dp"
android:textStyle="italic" >
</EditText>
</LinearLayout>
</LinearLayout>
</RelativeLayout>
</LinearLayout>
<Button
android:id="#+id/continueButton"
style="#style/textOnBg"
android:layout_width="250dp"
android:layout_height="50dp"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:layout_marginBottom="10dp"
android:background="#drawable/btn_selector"
android:text="Continue"
android:textColor="#00bcfe"
android:textSize="16dp"
android:textStyle="italic" />
USe your button here

You can use scrollView inside relativeLayout to fix your button at bottom:
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#drawable/radialback">
<ScrollView android:layout_height="wrap_content"
android:layout_width="match_parent"
android:layout_below="#+id/top_header"
>
<EditText
android:id="#+id/editmessage"
android:layout_margin="2dp"
style="#style/editView"
android:inputType="textMultiLine"
android:digits="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz1234567890 _-.,()"
android:maxLength="500"
/>
</LinearLayout>
</ScrollView>
<Button
android:id="#+id/submitbutton"
android:text="#string/submitbutton"
style="#style/submitView"
android:layout_alignParentBottom="true" />
</RelativeLayout>

Refill Layout when hiding some elments

I would like to show different elements to the user.
Therefore I would like to hide some elements, while others will show.
However, replaced elements cannot fill up the original area.
So are there any method to replace it.?
<?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" >
<VideoView
android:id="#+id/lesson_main_left_videoView"
android:layout_width="match_parent"
android:layout_height="0dip"
android:layout_weight="6" />
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/lesson_main_left_LinearLayout"
android:layout_width="match_parent"
android:layout_height="0dip"
android:layout_weight="6"
android:orientation="horizontal" >
<EditText
android:id="#+id/lesson_main_left_record"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:editable="false"
android:ems="10"
android:singleLine="false" />
<ListView
android:id="#+id/lesson_main_left_buddyList"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:animateLayoutChanges="true" />
</LinearLayout>
<TableRow
android:id="#+id/lesson_main_left_tableRow1"
android:layout_width="match_parent"
android:layout_height="0dip"
android:layout_weight="1" >
<EditText
android:id="#+id/lesson_main_left_message"
android:layout_width="0dip"
android:layout_height="wrap_content"
android:layout_weight="4" >
</EditText>
<Button
android:id="#+id/lesson_main_left_send"
android:layout_width="0dip"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="SEND" />
</TableRow>
</LinearLayout>

Yes, you can do that, using
setVisibility(View.GONE)
(instead of View.INVISIBLE).

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