Embed GLSurfaceView in complex layout

nanye · by **nanye** » Wed Dec 17, 2008 4:53 am

I want to embed GLSurfaceView( in ApiDemos ) in some complex layout. I found that any View under GLSurfaceView will not be displayed (includes the layout background), even I have enable the translucent feature of its Render.

The layout I used for test is:

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Using xml Syntax Highlighting

 
<?xml version="1.0" encoding="utf-8"?>
 
<RelativeLayout 
 
    xmlns:android="http://schemas.android.com/apk/res/android"
 
    android:orientation="vertical"
 
    android:background="#a0ff6600"
 
    android:layout_width="fill_parent"
 
    android:layout_height="fill_parent">
 
    <ImageView
 
        android:src="@drawable/icon"
 
        android:scaleType="center"
 
        android:layout_width="fill_parent" 
 
        android:layout_height="fill_parent"/>
 
    <com.android.gltest.GLSurfaceView
 
        android:id="@+id/surface_view"  
 
        android:layout_width="fill_parent" 
 
        android:layout_height="wrap_content"/>
 
</RelativeLayout>
 
Parsed in 0.002 seconds,  using GeSHi 1.0.8.4

And add codes in test activity (I used activity with translucent theme),

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Using java Syntax Highlighting

 
        ...
 
        setContentView(R.layout.layout_test_surface_view);
 
        mGLSurfaceView = (GLSurfaceView) findViewById(R.id.surface_view);
 
        mGLSurfaceView.setRenderer(new CubeRenderer(true));
 
        mGLSurfaceView.getHolder().setFormat(PixelFormat.RGBA_8888);
 
        ...
 
Parsed in 0.029 seconds,  using GeSHi 1.0.8.4

The ImageView cannot be seen. But if I change the order, put the ImageView above the GLSurfaceView, it works fine!
Modified xml is:

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Using xml Syntax Highlighting

 
<?xml version="1.0" encoding="utf-8"?>
 
<RelativeLayout 
 
    xmlns:android="http://schemas.android.com/apk/res/android"
 
    android:orientation="vertical"
 
    android:background="#a0ff6600"
 
    android:layout_width="fill_parent"
 
    android:layout_height="fill_parent">
 
    <com.android.gltest.GLSurfaceView
 
        android:id="@+id/surface_view"  
 
        android:layout_width="fill_parent" 
 
        android:layout_height="wrap_content"/>
 
    <ImageView
 
        android:src="@drawable/icon"
 
        android:scaleType="center"
 
        android:layout_width="fill_parent" 
 
        android:layout_height="fill_parent"/>
 
</RelativeLayout>
 
Parsed in 0.002 seconds,  using GeSHi 1.0.8.4

See the comparison of screenshots is attached below:

So, is this the problem of incorrect using or configuring of GLSurfaceView or just the problem of implement of GLSurface itself?

Looking forward to your helps.