camera清晰度问题

一切关于camera清晰度的问题，都是跟硬件有关系的，所以parameter必须得设置对了。下面是代码:

		Camera.Size maxPictureSize = mParameters.getSupportedPictureSizes().get(0);
                Camera.Size maxPreviewSize = mParameters.getSupportedPreviewSizes().get(0);
                for (int i = 0; i < mParameters.getSupportedPictureSizes().size(); i++) {
                    Camera.Size s = mParameters.getSupportedPictureSizes().get(i);
                    if (s.width > maxPictureSize.width) {
                        maxPictureSize = s;
                    }
                    if(s.width==maxPictureSize.width&&s.height>maxPictureSize.height){
                        maxPictureSize = s;
                    }
                }
                for (int i = 0; i < mParameters.getSupportedPreviewSizes().size(); i++) {
                    Camera.Size s = mParameters.getSupportedPreviewSizes().get(i);
                    if (s.width > maxPreviewSize.width) {
                        maxPreviewSize = s;
                    }
                    if(s.width==maxPreviewSize.width&&s.height>maxPreviewSize.height){
                        maxPreviewSize = s;
                    }
                }

                mParameters.setPictureSize(maxPictureSize.width, maxPictureSize.height);
                mParameters.setPreviewSize(maxPreviewSize.width, maxPreviewSize.height);
                mCamera.setParameters(mParameters)