Question

I am working on an android app in which I am seeing some disparity between what is showing up on the actual device and what is showing up when I run the app on the emulator.

Here is the relevant code.

I have an xml file which defines a shape – a simple blue rectangle:

<?xml version="1.0" encoding="utf-8"?>

<shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle">
    <corners
        android:radius="4dp" />
    <gradient
        android:angle="270"
        android:startColor="#449def"
        android:endColor="#2f6699" />
    <stroke
        android:width="1dp"
        android:color="#2f6699" />
</shape>

I then have another “view” xml file which uses that shape, shown here:

<?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" >

     <View
         android:background="@drawable/blue_rectangle"
         android:layout_width="match_parent"
         android:layout_height="match_parent" 
     />

</LinearLayout>

Finally, I have a custom ViewGroup which extends RelativeLayout. This custom layout has a child view object of the view which I described above. The custom layout also overrides the onLayout method such that it handles the layout process itself. That code is here:

@Override
protected void onLayout(boolean arg0, int arg1, int arg2, int arg3, int arg4) 
{   
    //Layout the children of this viewgroup
    int childCount = this.getChildCount();
    for (int i = 0; i < childCount; i++)
    {
        NodeView view = (NodeView) this.getChildAt(i);
        view.layout(40, 40, 40, 40); //Hard code the child object position
    }
}

As you can see, I am hardcoding the child views to have position (40, 40) and have width and height of 40 dip.

Unfortunately, I am getting varying results. This is what it looks like on the Android emulator (part of the Android development tools):

This is what it looks like on my actual Android device (and this is what I want it to look like as well):

What is causing the disparity in size of the blue box? Any ideas? Thanks!

Answer 1

The emulator has a setting when you make your AVD called Abstracted LCD Density. Make sure that is set to the same as the device. See if that works.