相机放大/缩小控制不工作 [英] Camera Zoom in/out controls not working

问题描述

  

可能重复：结果
  <一href=\"http://stackoverflow.com/questions/11219599/camera-$p$pview-zoom-in-out-not-working-on-click\">Camera preVIEW放大/缩小不工作的点击

在我的code相机放大/缩小控制而不是点击时，我们在输入/输出控制中没有错误，但摄像头preVIEW点击放大有没有输入/输出放大

 公共无效surfaceChanged（SurfaceHolder架，INT格式，诠释W，INT高）{
        Camera.Parameters参数= camera.getParameters（）;
       ZoomControls zoomControls =（ZoomControls）findViewById（R.id.C​​AMERA_ZOOM_CONTROLS）;
            如果（params.isZoomSupported（））{
            maxZoomLevel = params.getMaxZoom（）;
         zoomControls.setIsZoomInEnabled（真）;
         zoomControls.setIsZoomOutEnabled（真）;      zoomControls.setOnZoomInClickListener（新OnClickListener（）{
      公共无效的onClick（视图v）{
            如果（currentZoomLevel＆LT; MAX_ZOOM）{
                currentZoomLevel ++;
                camera.startSmoothZoom（currentZoomLevel）;
            }
    }
}）;             zoomControls.setOnZoomOutClickListener（新OnClickListener（）{          公共无效的onClick（视图v）{
            如果（currentZoomLevel大于0）{
                currentZoomLevel--;
                camera.startSmoothZoom（currentZoomLevel）;
            }
    }
  }）;
   }
           camera.setParameters（参数）;
        camera.start preVIEW（）;}
 

解决方案

首先检查了多少价值，这是 maxZoomLevel = params.getMaxZoom（）;
回来了。

变焦功能取决于你的相机硬件和摄像头驱动。

引用<一个href=\"http://stackoverflow.com/questions/8120753/android-camera-$p$pview-zoom-using-double-finger-touch\">Camera变焦

Possible Duplicate:
Camera preview Zoom in/out not working on click

In my code Camera Zoom in/out controls not working on click when we click on zoom in/out controls there in no error but camera preview is not zoomed in /out

  public void surfaceChanged(SurfaceHolder holder, int format, int w, int h) {
        Camera.Parameters parameters = camera.getParameters();
       ZoomControls zoomControls   =(ZoomControls)findViewById(R.id.CAMERA_ZOOM_CONTROLS);
            if(params.isZoomSupported()){    
            maxZoomLevel = params.getMaxZoom();
         zoomControls.setIsZoomInEnabled(true);
         zoomControls.setIsZoomOutEnabled(true);

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

             zoomControls.setOnZoomOutClickListener(new OnClickListener(){

          public void onClick(View v){
            if(currentZoomLevel > 0){
                currentZoomLevel--;
                camera.startSmoothZoom(currentZoomLevel);
            }
    }
  });    
   }
           camera.setParameters(parameters);
        camera.startPreview();



}

解决方案

First check how much value this is maxZoomLevel = params.getMaxZoom(); returning.

Zoom feature is dependent your Camera hardware and Camera Driver.

refer Camera Zoom

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