变焦控制相机未在Android平台 [英] Zoom Control in Camera is not working in Android

问题描述

我在自定义相机使用的工作表面观在我的应用程序，还录制视频屏幕捕获。

我期待实现缩放控制在我的相机code，但没有得到成功。

获得这个日志变焦：

  E / Adreno200的-ES20（12756）：其中，qgl2DrvAPI_glBufferSubData：709计算值：GL_INVALID_OPERATION
 

我使用低于code：

/ **
 * setZoomControl
 * @参数PARAMS
 * /

 公共无效setZoomControl（Camera.Parameters PARAMS）{
    paramtrs =参数;
    ZoomControls zoomControls =（ZoomControls）findViewById（R.id.zoomcontrols）;    如果（params.isZoomSupported（））{
        最终诠释maxZoomLevel = paramtrs.getMaxZoom（）;
        Log.i（最大ZOOM，是+ maxZoomLevel）;        zoomControls.setIsZoomInEnabled（真）;
        zoomControls.setIsZoomOutEnabled（真）;        zoomControls.setOnZoomInClickListener（新OnClickListener（）{
            公共无效的onClick（视图v）{
                INT currentZoomLevel = 0;
                如果（currentZoomLevel＆LT; maxZoomLevel）{
                    currentZoomLevel ++;
                    camera.startSmoothZoom（currentZoomLevel）;
                }
            }
        }）;        zoomControls.setOnZoomOutClickListener（新OnClickListener（）{
            公共无效的onClick（视图v）{
                INT currentZoomLevel = 0;
                如果（currentZoomLevel大于0）{
                    currentZoomLevel--;
                    camera.startSmoothZoom（currentZoomLevel）;
                }
            }
        }）;
    }其他
        zoomControls.setVisibility（View.GONE）;
}
 

请给我建议什么在我的code发生。

解决方案

  

您可以使用此code

 如果（params.isZoomSupported（））{
        最终诠释maxZoomLevel = params.getMaxZoom（）;
        Log.i（最大ZOOM，是+ maxZoomLevel）;
        zoomControls.setIsZoomInEnabled（真）;
        zoomControls.setIsZoomOutEnabled（真）;        zoomControls.setOnZoomInClickListener（新OnClickListener（）{
            公共无效的onClick（视图v）{
                如果（currentZoomLevel＆LT; maxZoomLevel）{
                    currentZoomLevel ++;
                    //mCamera.startSmoothZoom(currentZoomLevel）;
                    params.setZoom（currentZoomLevel）;
                    mCamera.setParameters（PARAMS）;
                }
            }
        }）;        zoomControls.setOnZoomOutClickListener（新OnClickListener（）{
            公共无效的onClick（视图v）{
                如果（currentZoomLevel大于0）{
                    currentZoomLevel--;
                    params.setZoom（currentZoomLevel）;
                    mCamera.setParameters（PARAMS）;
                }
            }
        }）;
    }
    其他
        zoomControls.setVisibility（View.GONE）;
 

I am working on Custom Camera using Surface view in my application, also recording Video with screen Capture.

I am looking to implement Zoom Control in my Camera Code but not getting success.

Getting this log while Zooming:

E/Adreno200-ES20(12756): <qgl2DrvAPI_glBufferSubData:709>: GL_INVALID_OPERATION

I am using below code:

/** * setZoomControl * @param params */

public void setZoomControl(Camera.Parameters params) {
    paramtrs = params;
    ZoomControls zoomControls = (ZoomControls) findViewById(R.id.zoomcontrols);

    if (params.isZoomSupported()) {
        final int maxZoomLevel = paramtrs.getMaxZoom();
        Log.i("max ZOOM ", "is " + maxZoomLevel);

        zoomControls.setIsZoomInEnabled(true);
        zoomControls.setIsZoomOutEnabled(true);

        zoomControls.setOnZoomInClickListener(new OnClickListener() {
            public void onClick(View v) {
                int currentZoomLevel = 0;
                if (currentZoomLevel < maxZoomLevel) {
                    currentZoomLevel++;
                    camera.startSmoothZoom(currentZoomLevel);
                }
            }
        });

        zoomControls.setOnZoomOutClickListener(new OnClickListener() {
            public void onClick(View v) {
                int currentZoomLevel = 0;
                if (currentZoomLevel > 0) {
                    currentZoomLevel--;
                    camera.startSmoothZoom(currentZoomLevel);
                }
            }
        });
    } else
        zoomControls.setVisibility(View.GONE);
}

Please suggest me whats happening in my code.

解决方案

You can use this code

if (params.isZoomSupported()) {
        final int maxZoomLevel = params.getMaxZoom();
        Log.i("max ZOOM ", "is " + maxZoomLevel);
        zoomControls.setIsZoomInEnabled(true);
        zoomControls.setIsZoomOutEnabled(true);

        zoomControls.setOnZoomInClickListener(new OnClickListener(){
            public void onClick(View v){
                if(currentZoomLevel < maxZoomLevel){
                    currentZoomLevel++;
                    //mCamera.startSmoothZoom(currentZoomLevel);
                    params.setZoom(currentZoomLevel);
                    mCamera.setParameters(params);
                }
            }
        });

        zoomControls.setOnZoomOutClickListener(new OnClickListener(){
            public void onClick(View v){
                if(currentZoomLevel > 0){
                    currentZoomLevel--;
                    params.setZoom(currentZoomLevel);
                    mCamera.setParameters(params);
                }
            }
        });    
    }
    else
        zoomControls.setVisibility(View.GONE);

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