使用andar for android方法冻结摄像头

Question

我会解释一下情况。我正在尝试解决如何在标记出现时暂停相机。我所说的标记是从这个链接中显示出来的。

http://code.google.com/p/andar/

当标记出现时，我想要一种暂停相机的方法，这样即使相机在移动，标记也不会消失。我需要这个，这样当玩游戏的时候，相机可以被轻推，但记号仍然会留在正确的地方。以下是标记活动的代码

公共类CustomActivity扩展了AndARActivity {

CustomObject2 someObject;
ARToolkit artoolkit;
@Override
public void onCreate(Bundle savedInstanceState) {

    super.onCreate(savedInstanceState);
    CustomRenderer renderer = new CustomRenderer();//optional, may be set to null
    super.setNonARRenderer(renderer);//or might be omited
    try {
        //register a object for each marker type
        artoolkit = super.getArtoolkit();
        someObject = new CustomObject2
            ("test", "patt.hiro", 80.0, new double[]{0,0});
        artoolkit.registerARObject(someObject);
        someObject = new CustomObject2
        ("test", "android.patt", 80.0, new double[]{0,0});
        artoolkit.registerARObject(someObject);
        someObject = new CustomObject2
        ("test", "barcode.patt", 80.0, new double[]{0,0});
        artoolkit.registerARObject(someObject);
    } catch (AndARException ex){
        //handle the exception, that means: show the user what happened
        System.out.println("");
    }       
    startPreview();
}

/**
 * Inform the user about exceptions that occurred in background threads.
 * This exception is rather severe and can not be recovered from.
 * TODO Inform the user and shut down the application.
 */
public void uncaughtException(Thread thread, Throwable ex) {
    Log.e("AndAR EXCEPTION", ex.getMessage());
    finish();
}

}

@Override

用于绘制立方体的绘制函数

public final void draw(GL10 gl) {
        super.draw(gl);

        gl.glMaterialfv(GL10.GL_FRONT_AND_BACK, GL10.GL_SPECULAR,mat_flash);
        gl.glMaterialfv(GL10.GL_FRONT_AND_BACK, GL10.GL_SHININESS, mat_flash_shiny);    
        gl.glMaterialfv(GL10.GL_FRONT_AND_BACK, GL10.GL_DIFFUSE, mat_diffuse);  
        gl.glMaterialfv(GL10.GL_FRONT_AND_BACK, GL10.GL_AMBIENT, mat_ambient);

        //this code draws the cube. 
        gl.glColor4f(0, 1.0f, 0, 1.0f);
        gl.glTranslatef( 0.0f, 0.0f, 12.5f );


        // experement with the api
        //draw the box
      box.draw(gl);
    }

我是否应该将代码包装在startPreview函数周围。或者我是否需要检查对象是否已绘制，然后以该方式停止预览。

我找到了这个命令，但我不确定在显示标记时如何实现它。我知道我需要一些条件，但不确定是什么。camera.stopPreview()；

Answer 1

也许可以尝试添加一些停止发送相机预览缓冲区进行处理的代码。这样，它将继续渲染相机预览，但不会处理新帧。