android - 在下拉列表后面设置 SurfaceView

Question

我想喜欢SurfaceView的必须出现在选项下拉列表[编辑维度等]的后面。当我点击选项时，Activity应该SurfaceView会出现在下拉列表的后面。

请检查以下链接中的图像，您会发现surfaceview没有出现在选项下拉列表后面的问题。你会很容易理解这些问题。

请帮助我如何做到这一点。

提前致谢

图片 ：

布局：

 <?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:layout_gravity="center"
    android:orientation="vertical"
    android:weightSum="1" >

    <FrameLayout
    android:id="@+id/topLinearLayout"
    android:layout_width="fill_parent"
    android:layout_height="50dip"
    android:background="@drawable/bar" >

    <ImageView
        android:id="@+id/new_quote_imageView"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:src="@drawable/new_quote_bar" />

    <TextView
        android:id="@+id/new_quote"
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        android:layout_gravity="center"
        android:gravity="center"
        android:text="@string/new_quote"
        android:textColor="@android:color/white"
        android:textSize="18sp" />

    <TextView
        android:id="@+id/optionsTextView"
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        android:layout_gravity="right"
        android:layout_marginRight="15dip"
        android:drawableRight="@drawable/icn_dropdown_open"
        android:gravity="center"
        android:text="@string/options"
        android:textColor="@android:color/white"
        android:textSize="18sp" />
    </FrameLayout>

    <FrameLayout
    android:layout_width="fill_parent"
    android:layout_height="fill_parent" >

    <FrameLayout
        android:id="@+id/topFrameLayout"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent" >

        <!-- ImageView for the product -->
        <ImageView
        android:id="@+id/photoImageView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

        <com.amplimesh.renderer.RendererView
        android:id="@+id/renderer_view"
        android:layout_width="match_parent"
        android:layout_height="match_parent" 
        android:background="@android:color/transparent"/>

    </FrameLayout>

    <ScrollView
        android:id="@+id/dropDownScrollView"
        android:layout_width="300dip"
        android:layout_height="wrap_content" 
        android:visibility="gone">

        <LinearLayout
        android:id="@+id/dropDownList"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="@drawable/dropdown_background"
        android:orientation="vertical"
        android:paddingBottom="20dip"
        android:paddingLeft="10dip"
        android:paddingRight="10dip"
        android:visibility="gone" >

        <LinearLayout
            android:id="@+id/editDimensionLayout"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginLeft="10dip"
            android:layout_marginTop="10dip"
            android:orientation="horizontal"
            android:weightSum="1" >

            <ImageView
            android:id="@+id/leftImage"
            android:layout_width="30dip"
            android:layout_height="30dip"
            android:background="@drawable/left_image_drop_down" />

            <TextView
            android:id="@+id/dimensionTextView"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginLeft="10dip"
            android:gravity="center_vertical"
            android:text="@string/edit_dimension"
            android:textColor="@android:color/black"
            android:textSize="18sp" />
        </LinearLayout>

        <LinearLayout
            android:id="@+id/editDimensionValueLayout"
            android:layout_width="match_parent"
            android:layout_height="270dip"
            android:layout_marginLeft="10dip"
            android:layout_marginRight="10dip"
            android:layout_marginTop="10dip"
            android:background="@drawable/edit_dimension_layout"
            android:orientation="vertical"
            android:visibility="gone" >

            <TextView
            android:id="@+id/heightTextView"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginLeft="12dip"
            android:layout_marginTop="10dip"
            android:gravity="center_vertical"
            android:text="@string/height"
            android:textColor="@android:color/black"
            android:textSize="16sp" />

            <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal" >

            <EditText
                android:id="@+id/heightEditText"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_marginLeft="10dip"
                android:layout_marginTop="10dip"
                android:maxWidth="180dip"
                android:minWidth="150dip" />

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_marginLeft="10dip"
                android:gravity="center"
                android:text="@string/cm"
                android:textColor="@android:color/black"
                android:textSize="14sp" />
            </LinearLayout>

            <TextView
            android:id="@+id/widthTextView"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginLeft="12dip"
            android:layout_marginTop="10dip"
            android:gravity="center_vertical"
            android:text="@string/width"
            android:textColor="@android:color/black"
            android:textSize="16sp" />

            <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal" >

            <EditText
                android:id="@+id/widthEditText"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_marginLeft="10dip"
                android:layout_marginTop="10dip"
                android:maxWidth="180dip"
                android:minWidth="150dip" />

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="match_parent"
                android:layout_marginLeft="10dip"
                android:gravity="center"
                android:text="@string/cm"
                android:textColor="@android:color/black"
                android:textSize="14sp" />
            </LinearLayout>

            <Button
            android:id="@+id/saveButton"
            android:layout_width="100dip"
            android:layout_height="45dip"
            android:layout_gravity="center_horizontal"
            android:layout_marginLeft="10dip"
            android:layout_marginTop="10dip"
            android:background="@drawable/button_background"
            android:gravity="center"
            android:text="@string/save"
            android:textColor="@android:color/white" />
        </LinearLayout>

        <LinearLayout
            android:id="@+id/pickColorLayout"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginLeft="10dip"
            android:layout_marginRight="10dip"
            android:layout_marginTop="20dip"
            android:orientation="horizontal"
            android:weightSum="1" >

            <ImageView
            android:id="@+id/leftImage"
            android:layout_width="30dip"
            android:layout_height="30dip"
            android:background="@drawable/left_image_drop_down" />

            <TextView
            android:id="@+id/pickColorTextView"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_marginLeft="10dip"
            android:gravity="center_vertical"
            android:text="@string/pick_colour"
            android:textColor="@android:color/black"
            android:textSize="18sp" />
        </LinearLayout>

        <RelativeLayout
            android:id="@+id/pickColourValueLayout"
            android:layout_width="match_parent"
            android:layout_height="330dip"
            android:layout_marginLeft="10dip"
            android:layout_marginRight="10dip"
            android:layout_marginTop="10dip"
            android:background="@drawable/edit_dimension_layout"
            android:visibility="gone" >

            <ImageButton
            android:id="@+id/firstColour"
            android:layout_width="100dip"
            android:layout_height="45dip"
            android:layout_alignParentLeft="true"
            android:layout_marginLeft="10dip"
            android:layout_marginTop="10dip"
            android:background="@drawable/first_colour" />

            <ImageButton
            android:id="@+id/secondColour"
            android:layout_width="100dip"
            android:layout_height="45dip"
            android:layout_alignParentRight="true"
            android:layout_alignTop="@id/firstColour"
            android:layout_marginRight="10dip"
            android:background="@drawable/tenth_colour" />

            <ImageButton
            android:id="@+id/thirdColour"
            android:layout_width="100dip"
            android:layout_height="45dip"
            android:layout_alignLeft="@id/firstColour"
            android:layout_below="@id/firstColour"
            android:layout_marginTop="15dip"
            android:background="@drawable/second_colour" />

            <ImageButton
            android:id="@+id/fourthColour"
            android:layout_width="100dip"
            android:layout_height="45dip"
            android:layout_alignParentRight="true"
            android:layout_alignTop="@id/thirdColour"
            android:layout_marginRight="10dip"
            android:background="@drawable/ninth_colour" />

            <ImageButton
            android:id="@+id/fifthColour"
            android:layout_width="100dip"
            android:layout_height="45dip"
            android:layout_alignLeft="@id/firstColour"
            android:layout_below="@id/thirdColour"
            android:layout_marginTop="15dip"
            android:background="@drawable/third_colour" />

            <ImageButton
            android:id="@+id/sixthColour"
            android:layout_width="100dip"
            android:layout_height="45dip"
            android:layout_alignParentRight="true"
            android:layout_alignTop="@id/fifthColour"
            android:layout_marginRight="10dip"
            android:background="@drawable/eight_colour" />

            <ImageButton
            android:id="@+id/seventhColour"
            android:layout_width="100dip"
            android:layout_height="45dip"
            android:layout_alignLeft="@id/firstColour"
            android:layout_below="@id/fifthColour"
            android:layout_marginTop="15dip"
            android:background="@drawable/fourth_colour" />

            <ImageButton
            android:id="@+id/eightColour"
            android:layout_width="100dip"
            android:layout_height="45dip"
            android:layout_alignParentRight="true"
            android:layout_alignTop="@id/seventhColour"
            android:layout_marginRight="10dip"
            android:background="@drawable/seventh_colour" />

            <ImageButton
            android:id="@+id/ninthColour"
            android:layout_width="100dip"
            android:layout_height="45dip"
            android:layout_alignLeft="@id/firstColour"
            android:layout_below="@id/seventhColour"
            android:layout_marginTop="15dip"
            android:background="@drawable/fifth_colour" />

            <ImageButton
            android:id="@+id/tenthColour"
            android:layout_width="100dip"
            android:layout_height="45dip"
            android:layout_alignParentRight="true"
            android:layout_alignTop="@id/ninthColour"
            android:layout_marginRight="10dip"
            android:background="@drawable/sixth_colour" />
        </RelativeLayout>

        <LinearLayout
            android:id="@+id/addMeshLayout"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginLeft="10dip"
            android:layout_marginRight="10dip"
            android:layout_marginTop="20dip"
            android:orientation="horizontal"
            android:weightSum="1" >

            <ImageView
            android:id="@+id/leftImage"
            android:layout_width="30dip"
            android:layout_height="30dip"
            android:background="@drawable/left_image_drop_down" />

            <TextView
            android:id="@+id/pickColorTextView"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_marginLeft="10dip"
            android:gravity="center_vertical"
            android:text="@string/add_mesh"
            android:textColor="@android:color/black"
            android:textSize="18sp" />
        </LinearLayout>

        <RelativeLayout
            android:id="@+id/addMeshContentLayout"
            android:layout_width="match_parent"
            android:layout_height="200dip"
            android:layout_marginLeft="10dip"
            android:layout_marginRight="10dip"
            android:layout_marginTop="10dip"
            android:background="@drawable/edit_dimension_layout"
            android:visibility="gone" >

            <Button
            android:id="@+id/firstAddButton"
            android:layout_width="60dip"
            android:layout_height="45dip"
            android:layout_alignParentLeft="true"
            android:layout_marginLeft="10dip"
            android:layout_marginTop="10dip"
            android:background="@drawable/add_button_background"
            android:text="@string/add"
            android:textColor="@android:color/white" />

            <TextView
            android:id="@+id/securaMeshTextView"
            android:layout_width="100dip"
            android:layout_height="45dip"
            android:layout_alignTop="@id/firstAddButton"
            android:layout_marginLeft="15dip"
            android:layout_marginRight="10dip"
            android:layout_toRightOf="@id/firstAddButton"
            android:gravity="center_vertical"
            android:text="@string/securamesh"
            android:textColor="@android:color/black" />

            <Button
            android:id="@+id/secondAddButton"
            android:layout_width="60dip"
            android:layout_height="45dip"
            android:layout_alignLeft="@id/firstAddButton"
            android:layout_below="@id/firstAddButton"
            android:layout_marginTop="15dip"
            android:background="@drawable/add_button_background"
            android:text="@string/add"
            android:textColor="@android:color/white" />

            <TextView
            android:id="@+id/supameshTextView"
            android:layout_width="100dip"
            android:layout_height="45dip"
            android:layout_alignTop="@id/secondAddButton"
            android:layout_marginLeft="15dip"
            android:layout_marginRight="10dip"
            android:layout_toRightOf="@id/secondAddButton"
            android:gravity="center_vertical"
            android:text="@string/supamesh"
            android:textColor="@android:color/black" />

            <Button
            android:id="@+id/removeButton"
            android:layout_width="100dip"
            android:layout_height="45dip"
            android:layout_below="@id/secondAddButton"
            android:layout_centerHorizontal="true"
            android:layout_marginTop="15dip"
            android:background="@drawable/button_background"
            android:text="@string/remove"
            android:textColor="@android:color/white" />
        </RelativeLayout>
        </LinearLayout>
    </ScrollView>
    </FrameLayout>

</LinearLayout>

代码 ：

package com.amplimesh.renderer;

import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import java.nio.FloatBuffer;

import javax.microedition.khronos.egl.EGLConfig;
import javax.microedition.khronos.opengles.GL10;

import android.content.Context;
import android.graphics.PixelFormat;
import android.opengl.GLSurfaceView;
import android.opengl.GLU;
import android.util.AttributeSet;
import android.util.Log;
import android.view.GestureDetector;
import android.view.MotionEvent;

import com.amplimesh.AddProductsActivity;
import com.amplimesh.models.ObjModel;
import com.amplimesh.util.MathHelper;
import com.amplimesh.util.Point3;


public class RendererView extends GLSurfaceView {

    public static final int GRID_SIZE=8;

    private Context mContext;
    private Renderer mRenderer;
    private TouchHelper mTouchHelper;

    float mViewWidth, mViewHeight;

    ObjModel mModel;
    Point3 mOrigin;
    Point3 mRotate;
    Point3 mCamera;

    FloatBuffer mGrid;
    int mGridSize;

    public static String objName = "";
    public static String textureFileName = "";

    public RendererView(Context context) { 
        this(context,null); 
    }

    public RendererView(Context context, AttributeSet attrs) {
        super(context,attrs);
        mContext = context;

        try{
            mModel = ObjModel.loadFromStream(mContext.getAssets().open(objName), textureFileName);
        } catch (java.io.IOException e) {
            Log.v("DemoRendererView", "loading model: "+e);
        }

        mOrigin = new Point3(0f,0f,0f);
        mRotate = new Point3(0f,0f,0f);
        mCamera = new Point3(0f,3f,3.9f);

        mTouchHelper = new TouchHelper(context);

    }

    public void start() {
        mRenderer = new Renderer();
        setEGLContextClientVersion(1);
        setRenderer(mRenderer);
    }

    @Override
    public boolean onTouchEvent(MotionEvent ev) {
        return mTouchHelper.onTouchEvent(ev);
    }

    private void drag_xy(float dx, float dy) {
        mOrigin.x += (dx/mViewWidth)*mGridSize;
        mOrigin.y -= (dy/mViewHeight)*mGridSize;
        float half = mGridSize/2;
        mOrigin.minmax(-half+.5f,-half+.5f,-half+.5f,half-.5f,half-.5f,half-.5f);
    }

    private void drag_xz(float dx, float dy) {
        mOrigin.x += (dx/mViewWidth)*mGridSize;
        mOrigin.z += (dy/mViewHeight)*mGridSize;
        float half = mGridSize/2;
        mOrigin.minmax(-half+.5f,-half+.5f,-half+.5f,half-.5f,half-.5f,half-.5f);
    }

    private class TouchHelper extends GestureDetector.SimpleOnGestureListener {
        GestureDetector gesture;
        int ptr1_id=-1, ptr2_id=-1;
        float last_x=-1, last_y=-1;

        public TouchHelper(Context context) {
            gesture = new GestureDetector(context, this);
        }

        @Override
        public boolean onDoubleTap(MotionEvent ev) {
            if (mRotationFinal != -1) 
                return true;

            int index = ev.getActionIndex();
            float x = ev.getX(index);
            float y = ev.getY(index);

            int col = (int)(x / mViewWidth * 3);
            int row = (int)(y / mViewHeight * 3);

            Log.v("ObjDem", "col,row:"+col+","+row);


            if (col == 0 && row == 0) {
                mRotationAxis = Z_AXIS;
                mRotationFinal = mRotate.z + 90;
                mRotationDelta = 1;
            }
            else
                if (col == 0 && row == 1) {
                    mRotationAxis = Y_AXIS;
                    mRotationFinal = mRotate.y - 90;
                    mRotationDelta = -1;
                }
                else
                    if (col == 1 && row == 0) {
                        mRotationAxis = X_AXIS;
                        mRotationFinal = mRotate.x - 90;
                        mRotationDelta = -1;
                    }
                    else
                        if (col == 1 && row == 2) {
                            mRotationAxis = X_AXIS;
                            mRotationFinal = mRotate.x + 90;
                            mRotationDelta = 1;
                        }
                        else
                            if (col == 2 && row == 1) {
                                mRotationAxis = Y_AXIS;
                                mRotationFinal = mRotate.y + 90;
                                mRotationDelta = 1;
                            }
                            else
                                if (col == 2 && row == 2) {
                                    mRotationAxis = Z_AXIS;
                                    mRotationFinal = mRotate.z - 90;
                                    mRotationDelta = -1;
                                }
            return true;
        }

        @Override
        public boolean onFling(MotionEvent e1, MotionEvent e2, float vel_x, float vel_y) {
            float angle = MathHelper.angle_of_vector(vel_x, vel_y);
            Log.v("ObjDemo", "vel: "+vel_x+","+vel_y+" = "+angle);
            return true;
        }

        public boolean onTouchEvent(MotionEvent ev) {

            if(AddProductsActivity.optionFlag) {
                return false;
            }

            if (gesture.onTouchEvent(ev)) {
                ptr1_id = -1;
                ptr2_id = -1;
                last_x = -1f;
                last_y = -1f;
                return true;
            }

            int action = ev.getActionMasked();
            int index = ev.getActionIndex();
            int id = ev.getPointerId(index);
            int count = ev.getPointerCount();

            switch (action) {
                case MotionEvent.ACTION_DOWN:
                    ptr1_id = id;
                    break;

                case MotionEvent.ACTION_POINTER_DOWN:
                    ptr2_id = id;
                    break;

                case MotionEvent.ACTION_POINTER_UP:
                    ptr2_id = -1;
                    break;

                case MotionEvent.ACTION_UP:
                    ptr1_id = -1;
                    last_x = -1;
                    last_y = -1;
                    break;

                case MotionEvent.ACTION_MOVE:

                    float x,y;

                    if (count >= 2) {
                        x = ev.getX(index);
                        y = ev.getY(index);

                        if (last_x != -1) 
                            drag_xz(x - last_x, y - last_y);
                    }
                    else {
                        x = ev.getX(index);
                        y = ev.getY(index);

                        if (last_x != -1) 
                            drag_xy(x - last_x, y - last_y);
                    }

                    last_x = x;
                    last_y = y;
                    break;
            }
            return true;
        }

    }

    public final static int NONE=-1;
    public final static int X_AXIS=0;
    public final static int Y_AXIS=1;
    public final static int Z_AXIS=2;

    float mRotationFinal=-1f;
    float mRotationDelta=0f;
    int mRotationAxis=-1;

    private void tick() {
        if (mRotationFinal != -1) {
            float close = Math.abs(mRotationDelta*2);
            switch (mRotationAxis) {
                case X_AXIS:
                    mRotate.x += mRotationDelta;
                    if (Math.abs(mRotationFinal - mRotate.x) <= close) {
                        mRotate.x = mRotationFinal;
                        mRotationFinal=-1;
                    }
                    break;
                case Y_AXIS:
                    mRotate.y += mRotationDelta;
                    if (Math.abs(mRotationFinal - mRotate.y) <= close) {
                        mRotate.y = mRotationFinal;
                        mRotationFinal=-1;
                    }
                    break;
                case Z_AXIS:
                    mRotate.z += mRotationDelta;
                    if (Math.abs(mRotationFinal - mRotate.z) <= close) {
                        mRotate.z = mRotationFinal;
                        mRotationFinal=-1;
                    }
                break;
            }
            //mRotate.minmax(-360,-360,-360, 360,360,360);
        }

    }

    private class Renderer implements GLSurfaceView.Renderer {
        public Renderer() {
            setAlpha(0);
            setZOrderOnTop(false);
        }

        public void onSurfaceCreated(GL10 gl, EGLConfig config)
        {
            gl.glClearColor(0f,0f,0f, 0.5f);
            gl.glEnable(GL10.GL_DEPTH_TEST);
            gl.glDepthFunc(GL10.GL_LEQUAL);
            gl.glHint(GL10.GL_PERSPECTIVE_CORRECTION_HINT, GL10.GL_NICEST);

            gl.glEnable(GL10.GL_TEXTURE_2D);
            gl.glShadeModel(GL10.GL_SMOOTH);

            build_grid(GRID_SIZE);

            if(mModel != null)
                mModel.bindTextures(mContext, gl);
        }

        public void onSurfaceChanged(GL10 gl, int w, int h) {
            mViewWidth = (float)w;
            mViewHeight = (float)h;
            gl.glViewport(0,0,w,h);

            gl.glMatrixMode(GL10.GL_PROJECTION);
            gl.glLoadIdentity();
            GLU.gluPerspective(gl, 60.0f, mViewWidth/mViewHeight, 0.1f, 100f);

            gl.glMatrixMode(GL10.GL_MODELVIEW);
            gl.glLoadIdentity();
        }

        public void onDrawFrame(GL10 gl) {
            tick();
            gl.glClear(GL10.GL_COLOR_BUFFER_BIT | GL10.GL_DEPTH_BUFFER_BIT);
            gl.glPushMatrix();

            //position camera
            GLU.gluLookAt(gl, mCamera.x,mCamera.y,mCamera.z, mOrigin.x,mOrigin.y,mOrigin.z, 0f,1f,0f);

            //draw_grid
            draw_grid(gl);

            //draw_model
            gl.glPushMatrix();

            gl.glTranslatef(mOrigin.x, mOrigin.y, 2);
            gl.glRotatef(mRotate.x, 1f, 0f, 0f);
            gl.glRotatef(mRotate.y, 0f, 1f, 0f);
            gl.glRotatef(mRotate.z, 0f, 0f, 1f);
            mModel.draw(gl);
            gl.glPopMatrix();
            gl.glPopMatrix();
        }


        private void build_grid(int GRID_SIZE) {
            float i;
            float half = GRID_SIZE/2f;
            mGridSize = GRID_SIZE;

            ByteBuffer tBuf = ByteBuffer.allocateDirect((GRID_SIZE+1)*12*3 * 4);
            tBuf.order(ByteOrder.nativeOrder());
            mGrid = tBuf.asFloatBuffer();

            for (i=-half; i <= +half; i++) {
                mGrid.put(i); mGrid.put(-half); mGrid.put(+half);
                mGrid.put(i); mGrid.put(-half); mGrid.put(-half);
                mGrid.put(i); mGrid.put(+half); mGrid.put(-half);
                mGrid.put(i); mGrid.put(+half); mGrid.put(+half);

                mGrid.put(-half); mGrid.put(i); mGrid.put(+half);
                mGrid.put(-half); mGrid.put(i); mGrid.put(-half);
                mGrid.put(+half); mGrid.put(i); mGrid.put(-half);
                mGrid.put(+half); mGrid.put(i); mGrid.put(+half);

                mGrid.put(-half); mGrid.put(+half); mGrid.put(i);
                mGrid.put(-half); mGrid.put(-half); mGrid.put(i);
                mGrid.put(+half); mGrid.put(-half); mGrid.put(i);
                mGrid.put(+half); mGrid.put(+half); mGrid.put(i);
            }
            mGrid.rewind();
        }

        public void draw_grid(GL10 gl) {
            gl.glPushMatrix();
            int ofs=0;
            int i;
            gl.glDisableClientState(GL10.GL_TEXTURE_COORD_ARRAY);
            gl.glVertexPointer(3, GL10.GL_FLOAT, 0, mGrid);
            for (i=0; i <= mGridSize*3; i++)
            {
                gl.glDrawArrays(GL10.GL_LINE_LOOP, ofs, 4);
                ofs+=4;
            }
            gl.glPopMatrix();
        }
    }
}

package com.amplimesh.models;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import java.nio.FloatBuffer;
import java.util.ArrayList;
import java.util.StringTokenizer;

import javax.microedition.khronos.opengles.GL10;

import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.opengl.GLUtils;
import android.util.Log;

import com.amplimesh.util.Point3;

public class ObjModel {

    public void bindTextures(Context context, GL10 gl) {
        Bitmap bitmap;
        try {
            InputStream is = context.getAssets().open("textures/"+mTextureName);
            bitmap = BitmapFactory.decodeStream(is);
            if (bitmap == null) {
                Log.v("ObjModel", "err loading bitmap!");
            }
        } catch (java.io.IOException e) {
            Log.v("ObjModel", "err loading tex: "+e.toString());
            return;
        }

        mTextures = new int[1];
        gl.glGenTextures(1, mTextures, 0);
        gl.glBindTexture(GL10.GL_TEXTURE_2D, mTextures[0]);
        gl.glTexParameterf(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_MIN_FILTER, GL10.GL_LINEAR);
        gl.glTexParameterf(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_MAG_FILTER, GL10.GL_LINEAR);
        gl.glTexParameterf(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_WRAP_S, GL10.GL_CLAMP_TO_EDGE);
        gl.glTexParameterf(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_WRAP_T, GL10.GL_CLAMP_TO_EDGE);
        GLUtils.texImage2D(GL10.GL_TEXTURE_2D, 0, bitmap, 0);
        bitmap.recycle();
    }

    public void draw(GL10 gl) {
        gl.glEnableClientState(GL10.GL_VERTEX_ARRAY);
        gl.glEnableClientState(GL10.GL_TEXTURE_COORD_ARRAY);
        for (Model model : mModels) {

            gl.glVertexPointer(3, GL10.GL_FLOAT, 0, model.v);
            if (model.vt != null && mTextures != null) {
                gl.glBindTexture(GL10.GL_TEXTURE_2D, mTextures[0]);
                gl.glTexCoordPointer(2, GL10.GL_FLOAT, 0, model.vt);
            }

            if (model.vn != null) {
                gl.glNormalPointer(GL10.GL_FLOAT, 0, model.vn);
            }
            gl.glDrawArrays(GL10.GL_TRIANGLES, 0, model.v_size);

        }

        gl.glDisableClientState(GL10.GL_VERTEX_ARRAY);
        gl.glDisableClientState(GL10.GL_TEXTURE_COORD_ARRAY);
    }

    public static ObjModel loadFromStream(InputStream is, String texture_name) throws IOException {
        ObjModel obj = ObjLoader.loadFromStream(is);
        obj.mTextureName = texture_name;
        return obj;
    }

    private Model mModels[];
    private int mTextures[];
    private String mTextureName;


}

Answer 1

在您的代码中 setZOrderOnTop(true); 我认为这解释了一切，它导致矩形在顶部绘制，这就是你看到这样的原因，你应该将它设置为 false

setZOrderOnTop(false);

并且在您的代码中，您应该声明您的选项下拉列表并在其上调用它

...
yourDropDownView.bringToFront();