[android-developers] Layout issues

[Damien Cooke]

Hi All,

I am having a problem with layouts.  I am sure I have just missed something 
stupid but if someone could point me in the right direction I would really 
appreciate it.


I have build a navigation system which works very well for my application, 

I have a scrolling "tabBar" which is a set of buttons inside a horizontal 
scrollView.  When one of the buttons is hit I load a new Layout into the 
frameView.

So the idea is I have a LinearLayout which contains a FrameLayout and a 
horozontalScrollView.

Pretty simple, and worked fine while I gave the frameLayout a specific size.  
Now I want to support multiple device sizes I am having all sorts of issues.  I 
used patch9s to sort out the graphics but if I pop a layout like this:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android";
    android:background="@android:color/black"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent">
    
    <ListView
        android:id= "@android:id/android:list"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"/>
</LinearLayout>


Into my frame and I loose some of the rows ie they are there but are outside of 
the scrollable area.  In iOS I would alter the contentSize but I can find no 
way of doing that.

My "Tab controller" adds the views like this

        private FrameLayout frame;
        private LocalActivityManager manager;
        
        .......

        frame = (FrameLayout) findViewById(R.id.tab_content_frame);
                
        if(manager == null)
        {
                manager = getLocalActivityManager();
        }
                

        Intent preloader = new Intent(this,SSDEventsActivity.class);
        View childView = manager.startActivity(preloader.getAction(),
        preloader.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP)).getDecorView();

        frame.removeAllViews();
        frame.addView(childView); 


Here is the layout in question:

<?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:gravity="bottom"
  >
                                               
 <FrameLayout
        android:id="@+id/tab_content_frame"
        android:orientation="vertical"
        android:layout_height="fill_parent" <= if I set this it to a number it 
all works but looks awful on all but the one size.
        android:layout_width="fill_parent"    
    
        android:layout_marginTop="0dip">
  </FrameLayout>
  
  <HorizontalScrollView
        android:id="@+id/tab_button_scroller" 
        android:orientation="vertical" 
        android:layout_height="60dip"
        android:layout_width="fill_parent"
        android:fillViewport="true"
        android:layout_marginBottom="0dip"
        android:background="@color/black">
    <RelativeLayout 
        xmlns:android="http://schemas.android.com/apk/res/android";      
        android:orientation="vertical"
        android:layout_height="wrap_content" 
        android:layout_width="wrap_content">
        <ImageButton 
            android:contentDescription="@string/tab_description_events"
                android:layout_marginTop="5dip"
                        android:id="@+id/tab_button_zero" 
                        android:layout_width="50dip"
                        android:layout_height="50dip" 
                        android:layout_marginLeft="10dip"
                        android:layout_gravity="center"
                        android:text="@string/tab_title_events">
                </ImageButton>   
                <ImageButton 
                    android:contentDescription="@string/tab_description_buses"
                        android:layout_marginTop="5dip"
                        android:id="@+id/tab_button_one" 
                        android:layout_width="50dip"
                        android:layout_height="50dip" 
                        android:layout_marginLeft="80dip"
                        android:layout_gravity="center"
                        android:text="@string/tab_title_buses">
                </ImageButton>
                <ImageButton 
                    android:contentDescription="@string/tab_description_map"
                        android:layout_marginTop="5dip"
                        android:id="@+id/tab_button_two"  
                        android:layout_width="50dip"
                        android:layout_height="50dip" 
                        android:layout_marginLeft="150dip"
                        android:layout_gravity="center"
                        android:text="@string/tab_title_map">
                </ImageButton>
                <ImageButton
                    android:contentDescription="@string/tab_description_help" 
                        android:layout_marginTop="5dip"
                        android:id="@+id/tab_button_three" 
                        android:layout_width="50dip"
                        android:layout_height="50dip" 
                        android:layout_marginLeft="220dip"
                        android:layout_gravity="center"
                        android:text="@string/tab_title_help">
                </ImageButton>
                <ImageButton 
                    android:contentDescription="@string/tab_description_info"
                        android:layout_marginTop="5dip"
                        android:id="@+id/tab_button_four" 
                        android:layout_width="50dip"
                        android:layout_height="50dip" 
                        android:layout_marginLeft="290dip"
                        android:layout_gravity="center"
                        android:text="@string/tab_title_info">
                </ImageButton>
    </RelativeLayout>
  </HorizontalScrollView>
   
</LinearLayout>

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