主要是因为surfaceview的显示大小和camera预览Size不匹配导致的。
下面这一段,我也是借鉴别人然后修改传入的surfaceview宽高位置就可以了。
parameters.setFocusMode(Camera.Parameters.FOCUS_MODE_AUTO); List<Camera.Size> sizeList = parameters.getSupportedPreviewSizes();//获取所有支持的camera尺寸 Log.d("jxd","optionSize : mSurfaceView "+mSurfaceView.getWidth()+" * "+mSurfaceView.getHeight()); Camera.Size optionSize = getOptimalPreviewSize(sizeList, mSurfaceView.getHeight(), mSurfaceView.getWidth());//获取一个最为适配的camera.size Log.d("jxd","optionSize : "+optionSize.width+" * "+optionSize.height); parameters.setPreviewSize(optionSize.width,optionSize.height);//把camera.size赋值到parameters mCamera.setParameters(parameters); //通过SurfaceView显示预览 mCamera.setPreviewDisplay(mHolder); //开始预览 mCamera.startPreview();
寻找合适的size
/** * 解决预览变形问题 * @param sizes * @param w * @param h * @return */ private Camera.Size getOptimalPreviewSize(List<Camera.Size> sizes, int w, int h) { final double ASPECT_TOLERANCE = 0.1; double targetRatio = (double) w / h; if (sizes == null) return null; Camera.Size optimalSize = null; double minDiff = Double.MAX_VALUE; int targetHeight = h; // Try to find an size match aspect ratio and size for (Camera.Size size : sizes) { double ratio = (double) size.width / size.height; if (Math.abs(ratio - targetRatio) > ASPECT_TOLERANCE) continue; if (Math.abs(size.height - targetHeight) < minDiff) { optimalSize = size; minDiff = Math.abs(size.height - targetHeight); } } // Cannot find the one match the aspect ratio, ignore the requirement if (optimalSize == null) { minDiff = Double.MAX_VALUE; for (Camera.Size size : sizes) { if (Math.abs(size.height - targetHeight) < minDiff) { optimalSize = size; minDiff = Math.abs(size.height - targetHeight); } } } return optimalSize; }