Develop Reference

WebView visibility issue in Layout in Android - android

I do not understand Android layouts. I have the following structure and have tried all sorts of combinations of Relative and Linear layouts with layout above, below, gravity etc. and no matter what I do the webview either disappears or pushes the buttons off the bottom of the screen.
I do not understand why the renderer thinks this way. Surely if you have other things in the layout it should adjust it accordingly?
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="fill_parent"
android:layout_height="fill_parent">
<LinearLayout android:id="#+id/cage" android:layout_height="fill_parent" android:layout_width="fill_parent">
<LinearLayout android:id="#+id/homelinklayout"
android:layout_height="wrap_content" android:layout_width="fill_parent">
<TextView android:text="FRAMTIDS" android:layout_width="wrap_content"
android:id="#+id/hometext1" android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"></TextView>
<TextView android:text="GYMNASIET" android:layout_width="wrap_content"
android:id="#+id/hometext2" android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"></TextView>
<ImageView android:layout_height="wrap_content" android:id="#+id/homeimage"
android:layout_width="wrap_content" android:src="#drawable/next"></ImageView>
</LinearLayout>
<LinearLayout android:id="#+id/homewebviewlayout"
android:layout_height="fill_parent" android:layout_width="fill_parent" >
<WebView android:id="#+id/webview" android:layout_height="fill_parent"
android:layout_width="fill_parent" />
</LinearLayout>
</LinearLayout>
<LinearLayout android:id="#+id/homebuttons"
android:layout_height="fill_parent" android:layout_width="fill_parent">
<ImageView android:layout_height="wrap_content"
android:src="#drawable/icon_mapsetup" android:id="#+id/btn_skolor"
android:layout_width="wrap_content" android:layout_gravity="bottom"></ImageView>
<ImageView android:layout_height="wrap_content"
android:src="#drawable/icon_mapsetup" android:id="#+id/btn_program"
android:layout_width="wrap_content" android:layout_gravity="bottom"></ImageView>
<ImageView android:layout_height="wrap_content"
android:src="#drawable/icon_mapsetup" android:id="#+id/btn_framtid"
android:layout_width="wrap_content" android:layout_gravity="bottom"></ImageView>
<ImageView android:layout_height="wrap_content"
android:src="#drawable/icon_mapsetup" android:id="#+id/btn_kontakt"
android:layout_width="wrap_content" android:layout_gravity="bottom"></ImageView>
</LinearLayout>

I am not very sure what you are trying to do here but try this
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/cage"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >
<TextView android:text="FRAMTIDS" android:layout_width="wrap_content"
android:id="#+id/hometext1" android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"></TextView>
<TextView android:text="GYMNASIET" android:layout_width="wrap_content"
android:id="#+id/hometext2" android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"></TextView>
<ImageView android:layout_height="wrap_content" android:id="#+id/homeimage"
android:layout_width="wrap_content" android:src="#drawable/next"></ImageView>
<WebView android:id="#+id/webview" android:layout_height="fill_parent"
android:layout_width="fill_parent" />
<RelativeLayout
android:id="#+id/homebuttons"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<ImageView
android:id="#+id/btn_skolor"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="bottom"
android:src="#drawable/capture" >
</ImageView>
<ImageView
android:id="#+id/btn_program"
android:layout_below="#id/btn_skolor"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="bottom"
android:src="#drawable/icon_mapsetup" >
</ImageView>
<ImageView
android:id="#+id/btn_framtid"
android:layout_width="wrap_content"
android:layout_below="#id/btn_program"
android:layout_height="wrap_content"
android:layout_gravity="bottom"
android:src="#drawable/icon_mapsetup" >
</ImageView>
<ImageView
android:id="#+id/btn_kontakt"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="bottom"
android:layout_below="#id/btn_framtid"
android:src="#drawable/icon_mapsetup" >
</ImageView>
</RelativeLayout>
</LinearLayout>
you will be able to see your views

Related

i have an app which has a main RelativeLayout and some LinearLayout within it.
My problem is that the LinearLayout doesn't fit to the full lenght of the screen:
this is my xml file :
<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:ads="http://schemas.android.com/apk/res-auto"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#color/bgApp" >
<LinearLayout
android:id="#+id/mainView"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="#dimen/topBarHeight"
android:background="#drawable/top"
android:gravity="center"
android:orientation="vertical" >
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:gravity="center_vertical"
android:orientation="horizontal"
android:background="#android:color/transparent" >
<ImageView
android:id="#+id/scoreLogo"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#drawable/coin_icon"
android:contentDescription="#string/app_name"/>
<TextView
android:id="#+id/mainScreenTotalPoints"
style="#style/pointTxt"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingLeft="#dimen/btnPaddingV"
android:text="#string/startPoint"
android:textSize="#dimen/buttonTextSize" />
</LinearLayout>
</LinearLayout>
<TextView
android:id="#+id/logo"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginBottom="#dimen/logPadding"
android:text="#string/app_name"
android:textColor="#d0105e"
android:textSize="27sp"
android:textStyle="bold"/>
<LinearLayout
android:id="#+id/root"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:paddingLeft="#dimen/btnPadding"
android:paddingRight="#dimen/btnPadding" >
<Button
android:id="#+id/play"
android:layout_width="fill_parent"
android:layout_height="#dimen/buttonHeight"
android:background="#drawable/button_blue"
android:gravity="center"
android:onClick="onButtonClickPlay"
android:text="#string/play"
android:textColor="#color/btnMain"
android:textSize="#dimen/buttonTextSize" />
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:gravity="bottom"
android:orientation="vertical"
android:paddingTop="#dimen/mainbox" >
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:paddingBottom="#dimen/btnPadding" >
<Button
android:id="#+id/btn_how"
style="#style/btnCapital"
android:layout_width="fill_parent"
android:layout_height="#dimen/buttonHeight"
android:layout_marginRight="#dimen/btnPaddingV"
android:layout_weight="1.0"
android:background="#drawable/button_green_how"
android:onClick="onButtonClickHowToPlay"
android:text="#string/howInfo" />
<Button
android:id="#+id/btn_rate"
style="#style/btnCapital"
android:layout_width="fill_parent"
android:layout_height="#dimen/buttonHeight"
android:layout_marginLeft="#dimen/btnPaddingV"
android:layout_weight="1.0"
android:background="#drawable/button_rate"
android:onClick="onButtonClickRate"
android:text="#string/rateInfo" />
</LinearLayout>
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:paddingBottom="#dimen/btnPadding" >
<Button
android:id="#+id/sound"
style="#style/btnCapital"
android:layout_width="0dp"
android:layout_height="#dimen/buttonHeight"
android:layout_marginTop="1.0dip"
android:layout_weight="1.0"
android:background="#drawable/mute_01"
android:gravity="center"
android:onClick="onButtonClickSound"
android:text="#string/mute" />
</LinearLayout>
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:paddingBottom="#dimen/btnPadding" >
<Button
android:id="#+id/moreapp"
style="#style/btnCapital"
android:layout_width="0dp"
android:layout_height="#dimen/buttonHeight"
android:layout_marginTop="1.0dip"
android:layout_weight="1.0"
android:background="#drawable/button_blue"
android:gravity="center"
android:onClick="onButtonClickMoreApp"
android:text="#string/moreapp" />
</LinearLayout>
</LinearLayout>
</LinearLayout>
</LinearLayout>
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_gravity="bottom"
android:gravity="center"
android:orientation="vertical" >
<com.google.android.gms.ads.AdView
android:id="#+id/adView"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_gravity="bottom"
ads:adSize="BANNER"
ads:adUnitId="#string/admob_publisher_id"
android:gravity="bottom" />
</LinearLayout>
</LinearLayout>
</ScrollView>
here is a screenshot :
Screenshot after running app
and here a screenshot of layout before running app:
Screenshot before running app
Thank you in advance !

You need to use the ScrollView attribute called android:fillViewport="true". This attribute causes the scroll view’s child to expand to the height of the ScrollView if needed.
When the child is taller than the ScrollView, the attribute has no effect.
Check out this for detail explanation.

You have to use attribute android:fillViewport="true".in your scrollview.

I have to customize a checkbox to show 2 different state while checked, i am using the following 2 images :
My custom selector is defined as follows:
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:drawable="#drawable/favourite_normal" android:state_checked="false"/>
<item android:drawable="#drawable/favourite_choose" android:state_checked="true"/>
<item android:drawable="#drawable/favourite_normal"/>
But thing is i am not getting proper result as in the image does not fills my checkbox view properly if i change the height and width of the checkbox which i have to do to adjust. The result i am getting like this:
The complete layout is given below :
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent"
android:weightSum="1">
<LinearLayout
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="74dp"
android:background="#drawable/bottom_bav_btn">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:orientation="horizontal"
android:layout_width="80dp"
android:layout_height="match_parent"
android:id="#+id/linearLayout">
<ImageView
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:id="#+id/jokeListViewBackButton"
android:src="#drawable/back_screen_button_normal"
android:layout_margin="10dp" />
</LinearLayout>
<LinearLayout
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_toRightOf="#+id/linearLayout"
android:layout_toLeftOf="#+id/linearLayout2"
android:layout_toStartOf="#+id/linearLayout2"
android:weightSum="1">
<LinearLayout
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:layout_width="fill_parent"
android:layout_height="37dp"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Large Text"
android:id="#+id/jokeTitleTextView"
android:gravity="center_vertical|center_horizontal"
android:textColor="#color/fontWhiteColor" />
<TextView
android:layout_width="fill_parent"
android:layout_height="37dp"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="0/0"
android:id="#+id/jokeCountTxt"
android:gravity="center_vertical|center_horizontal"
android:textColor="#color/fontWhiteColor" />
</LinearLayout>
</LinearLayout>
<LinearLayout
android:orientation="horizontal"
android:layout_width="80dp"
android:layout_height="match_parent"
android:layout_alignParentTop="true"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true"
android:id="#+id/linearLayout2"
android:gravity="center_vertical|center_horizontal">
<CheckBox
android:layout_width="40dp"
android:layout_height="40dp"
android:id="#+id/checkBox"
android:button="#drawable/custom_favourite_selector"
android:gravity="center_vertical|center_horizontal"
android:checked="false" />
</LinearLayout>
</RelativeLayout>
</LinearLayout>
<LinearLayout
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="300dp"
android:weightSum="1"
android:background="#color/listViewBody"
android:layout_weight="0.71">
<ScrollView
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:id="#+id/scrollView" >
<com.gravityapps.framework.Utils.CustomTextView
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:text=""
android:id="#+id/jokeTextView"
android:layout_below="#+id/imageView"
android:layout_centerHorizontal="true"
android:gravity="center"
android:textSize="25dp"
android:layout_alignParentBottom="true"
android:layout_marginRight="10dp"
android:layout_marginLeft="10dp" />
</ScrollView>
</LinearLayout>
<LinearLayout android:id="#+id/navbar"
android:layout_width="fill_parent"
android:layout_height="80dp"
android:orientation="horizontal">
<LinearLayout
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1"
android:background="#drawable/bottom_nav_back"
android:id="#+id/prevButtonLayout"
android:clickable="true">
<ImageView
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:id="#+id/imageView2"
android:background="#drawable/previous_btn_normal"
android:layout_margin="15dp" />
</LinearLayout>
<LinearLayout
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1"
android:background="#drawable/bottom_nav_back"
android:id="#+id/randPrevButtonLayout"
android:clickable="true" >
<ImageView
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:id="#+id/imageView3"
android:background="#drawable/reverse_btn_normal"
android:layout_margin="15dp" />
</LinearLayout>
<LinearLayout
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1"
android:background="#drawable/bottom_nav_back"
android:id="#+id/linearLayout5"
android:clickable="true" >
<ImageView
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:id="#+id/imageView4"
android:background="#drawable/copy_btn_normal"
android:layout_margin="15dp" />
</LinearLayout>
<LinearLayout
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1"
android:background="#drawable/bottom_nav_back"
android:id="#+id/linearLayout6"
android:clickable="true" >
<ImageView
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:id="#+id/imageView7"
android:background="#drawable/share_btn_normal"
android:layout_margin="15dp" />
</LinearLayout>
<LinearLayout
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1"
android:background="#drawable/bottom_nav_back"
android:id="#+id/randNextButtonLayout"
android:clickable="true" >
<ImageView
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:id="#+id/imageView5"
android:background="#drawable/forward_btn_normal"
android:layout_margin="15dp" />
</LinearLayout>
<LinearLayout
android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:clickable="true"
android:layout_weight="1"
android:background="#drawable/bottom_nav_back"
android:id="#+id/nextButtonLayout">
<ImageView
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:id="#+id/imageView6"
android:background="#drawable/next_btn_normal"
android:layout_margin="15dp" />
</LinearLayout>
</LinearLayout>
</LinearLayout>
I am not sure why i am getting this result. Any help would be appreciated. Thanks

The size of Checkbox 40dp*40dp smaller than the image you defined in selector.
use wrap_content instead of static dimensions.

Depending on the previous answer, if you don't want your checkbox to be larger, than you will have to resize your images. I think these are your best options, either you wrap_content your checkbox width and height or you resize your image resources into smaller, ex. 40*40px

<?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" >
<RelativeLayout
android:id="#+id/contact_relMainHeader"
android:layout_width="match_parent"
android:layout_height="50dip"
android:background="#16A180"
android:padding="5dp" >
<ImageView
android:id="#+id/contact_btnMenu"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_centerVertical="true"
android:layout_marginBottom="5dip"
android:layout_marginTop="5dip"
android:src="#drawable/scrol" />
<ImageView
android:id="#+id/contact_btnLogout"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_centerVertical="true"
android:layout_marginBottom="5dip"
android:layout_marginTop="5dip"
android:src="#drawable/lock" />
<ImageView
android:id="#+id/textView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
android:gravity="center"
android:src="#drawable/centertext" />
</RelativeLayout>
</RelativeLayout>
This is My Screen currently looking Like this .http://snag.gy/kwjAn.jpg i have to make of layout 3 partition vertically first for Google map ,Second for Name Display and , Third one for chat window actually i have make lay Out like this 10 part divide in to 4:2:4 3segement http://snag.gy/exrsu.jpg like this Layout. please help am unable to do this .

Try this ......
<?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" >
<RelativeLayout
android:id="#+id/contact_relMainHeader"
android:layout_width="match_parent"
android:layout_height="50dip"
android:background="#16A180"
android:padding="5dp" >
<ImageView
android:id="#+id/contact_btnMenu"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_centerVertical="true"
android:layout_marginBottom="5dip"
android:layout_marginTop="5dip"
android:src="#drawable/ic_launcher" />
<ImageView
android:id="#+id/contact_btnLogout"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_centerVertical="true"
android:layout_marginBottom="5dip"
android:layout_marginTop="5dip"
android:src="#drawable/ic_launcher" />
<ImageView
android:id="#+id/textView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
android:gravity="center"
android:src="#drawable/ic_launcher" />
</RelativeLayout>
<LinearLayout
android:layout_below="#+id/contact_relMainHeader"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
>
<LinearLayout
android:layout_weight="40"
android:layout_width="fill_parent"
android:layout_height="0dp"
android:background="#ff0000"
android:orientation="vertical"
>
</LinearLayout>
<LinearLayout
android:layout_weight="20"
android:layout_width="fill_parent"
android:layout_height="0dp"
android:orientation="vertical"
android:background="#000000"
>
</LinearLayout>
<LinearLayout
android:layout_weight="40"
android:layout_width="fill_parent"
android:layout_height="0dp"
android:orientation="vertical"
android:background="#ffff00"
>
</LinearLayout>
</LinearLayout>
</RelativeLayout>

Fragments will help you get the desired result. I can explain to you the logic without writing the code(...you need to put that effort). Your layout should have 3 fragments
The mapfagment can be at the top. Mapfragments
This can be followed by the fragment that contains a textview.
And the last one will contain your chat window.

I have to create the following layout on an Android device:
The requirements are as follows:
First layout which occupies the whole screen (fill_parent);
Second (at the bottom of the screen) overlays the first one and has the following formats:
3 columns;
occupies the whole screen width;
arrows are aligned left and right sides, and text area is resized based on screen width;
I've tried numerous things, but since I'm new to the Android world, I had no success yet.
Here is what I have so far:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:minWidth="25px"
android:minHeight="25px"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:weightSum="100"
android:id="#+id/RootView">
<ImageView
android:src="#android:drawable/ic_menu_gallery"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:scaleType="fitXY"
android:id="#+id/mapImageView" />
<LinearLayout
android:id="#+id/bottomArea"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:layout_alignParentBottom="true">
<LinearLayout
android:id="#+id/adsArea"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:orientation="horizontal"
android:layout_alignParentBottom="true">
<ImageButton
android:src="#drawable/leftArrow"
android:id="#+id/btnPrev"
android:layout_alignParentRight="true"
android:layout_marginLeft="0dip"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<LinearLayout
android:orientation="vertical"
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:layout_gravity="center">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Title" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="This is some summary text" />
</LinearLayout>
<ImageButton
android:src="#drawable/rightArrow"
android:layout_alignParentRight="true"
android:layout_marginRight="0dip"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/btnNext" />
</LinearLayout>
</LinearLayout>
</RelativeLayout>
but the text doesn't seem to be center aligned, nor resized to the screen width:
Does someone has a clue?
Thanks.

Use this code for your required layout...
<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" >
<LinearLayout
android:id="#+id/linear1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_above="#+id/linear2" >
<ImageView
android:id="#+id/imageView1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:src="#drawable/ic_launcher" />
</LinearLayout>
<RelativeLayout
android:id="#+id/linear2"
android:layout_width="match_parent"
android:layout_height="70dp"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true" >
<ImageButton
android:id="#+id/leftButton1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:src="#drawable/ic_launcher" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_toLeftOf="#+id/rightButton1"
android:layout_toRightOf="#+id/leftButton1"
android:gravity="center"
android:orientation="vertical" >
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Title" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="This is some summary text" />
</LinearLayout>
<ImageButton
android:id="#+id/rightButton1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:src="#drawable/ic_launcher" />
</RelativeLayout>

Please find the code below. Also, do not use multiple viewgroup for simple layout solution.
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/RootView"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<ImageView
android:id="#+id/mapImageView"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:src="#android:drawable/ic_menu_gallery" />
<RelativeLayout
android:id="#+id/adsArea"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true" >
<ImageButton
android:id="#+id/btnPrev"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:src="#drawable/leftArrow" />
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:orientation="vertical" >
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Title" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="This is some summary text" />
</LinearLayout>
<ImageButton
android:id="#+id/btnNext"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:src="#drawable/rightArrow" />
</RelativeLayout>
</RelativeLayout>

I have a layout xml like below:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<ImageView
android:id="#+id/imageView1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_gravity="top"
android:maxWidth="71dip"
android:src="#drawable/logo_top" >
</ImageView>
<ImageView
android:id="#+id/imageView2"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_gravity="top"
android:adjustViewBounds="false"
android:clickable="true"
android:maxHeight="70dip"
android:src="#drawable/registeration_title" >
</ImageView>
<TextView
android:id="#+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="" >
</TextView>
<RelativeLayout
android:id="#+id/relativeLayout1"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<LinearLayout
android:id="#+id/linearframe"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >
<FrameLayout
android:id="#+id/informationFrame"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical|center_horizontal" >
<ImageView
android:id="#+id/imageView3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="bottom"
android:src="#drawable/registeration_info1" />
<TextView
android:id="#+id/IDNumberTextView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="bottom"
android:layout_marginBottom="7dip"
android:layout_marginLeft="26dip"
android:text="TextView"
android:textColor="#drawable/textgreen" />
<TextView
android:id="#+id/EnableDateTextView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="bottom"
android:layout_marginBottom="7dip"
android:layout_marginLeft="140dip"
android:text="TextView"
android:textColor="#drawable/textgreen" />
</FrameLayout>
</LinearLayout>
<TextView
android:id="#+id/textView2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#id/linearframe"
android:text=" " />
<ImageView
android:id="#+id/imageView5"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#id/textView2"
android:layout_centerHorizontal="true"
android:src="#drawable/buy_in_60" />
<ListView
android:id="#+id/listView1"
android:layout_width="match_parent"
android:layout_height="fill_parent"
android:layout_alignLeft="#id/imageView5"
android:layout_alignRight="#id/imageView5"
android:layout_below="#id/imageView5" >
</ListView>
<TextView
android:id="#+id/textView3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text=" " />
<FrameLayout
android:id="#+id/frameLayout2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#id/listView1"
android:layout_centerHorizontal="true"
android:layout_marginLeft="79dp" >
<ImageView
android:id="#+id/imageView4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/registeration_info2" />
<TextView
android:id="#+id/VersionTextView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:layout_marginTop="48dip"
android:text="Version: 1.0"
android:textColor="#drawable/darkgreen" />
</FrameLayout>
<TextView
android:id="#+id/RevisionTextView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#id/frameLayout2"
android:layout_centerHorizontal="true"
android:layout_marginLeft="79dp"
android:text="Revision: 16"
android:textColor="#drawable/darkgreen" />
</RelativeLayout>
some layouts below the ListView in the xml will disappear on the screen
and I tried to put the ListView and other layouts below the ListView into a scrollView
but the ListView will shrink, it looks too small, so i remove the ScrollView,
how should i do to let them appear on the screen without ScrollView?

You need to set Weight to your layouts like this way..
like you can set ListView Weight is= 0.80 and Bottom View is = 0.20 make sure parent Linear layout Weight sum is = 1.
You can see this is my xml file having List View (80% screen) and bottom Bar layout for Google Ads (almost 20% screen).
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:weightSum="1">
<LinearLayout
android:id="#+id/layVrt"
android:layout_width="match_parent"
android:orientation="vertical"
android:layout_height="wrap_content"
android:layout_weight="0.72"
android:weightSum="1">
<ListView
android:layout_width="match_parent"
android:id="#+id/listViewGame"
android:textFilterEnabled="true"
android:layout_height="350dp"
android:layout_weight="0.73"></ListView>
</LinearLayout>
<LinearLayout
android:orientation="vertical"
android:gravity="center"
android:layout_width="match_parent"
android:layout_weight="0.20"
android:layout_marginTop="5dp"
android:background="#drawable/rounded_corners_white"
android:paddingLeft="3dp"
android:paddingRight="3dp"
android:layout_height="50dp"
android:layout_marginBottom="3dp"
android:id="#+id/layoutAdMobList">
</LinearLayout>
</LinearLayout>
so this will be the output..

Or you can try something like this:
<?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" >
<ListView
android:id="#+id/list"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_above="#+id/bottom_bar" >
</ListView>
<LinearLayout
android:id="#+id/bottom_bar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:background="#drawable/bottom_bar"
android:gravity="center_vertical"
android:orientation="horizontal" >
<ToggleButton
android:id="#+id/slider_btn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="5dp"
android:layout_weight="1"
android:background="#drawable/bottom_toggle_button" />
<ToggleButton
android:id="#+id/list_btn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="5dp"
android:layout_weight="1"
android:background="#drawable/bottom_left_button" />
<ToggleButton
android:id="#+id/map_btn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:background="#drawable/bottom_right_button" />
</LinearLayout>
</RelativeLayout>
Place everything inside a RelativeLayout and use android:layout_above="#+id/bottom_bar" on the ListView