try {

mycamera = Camera.open();

mycamera.startPreview();

mParameters = mycamera.getParameters();//得到摄像参数

ListSupportedPreviewSizes = mParameters.getSupportedPreviewSizes();

for (Size size : SupportedPreviewSizes)

{

if(size.width * size.height < 300000)

{

continue ;

}

if (optimalSize == null)

{

optimalSize = size ;

continue ;

}

if (size.width < optimalSize.width)

{

optimalSize = size ;

}

}

Log.e("UI", "width = " + optimalSize.width + " height = " + optimalSize.height);

if (optimalSize != null)

mParameters.setPreviewSize(optimalSize.width, optimalSize.height);

mycamera.setParameters(mParameters);

mycamera.setPreviewDisplay(mSurfaceview.getHolder());

} catch (IOException e) {}

以上代码为设置视频流的size，可是屏幕上花屏

在public void onPreviewFrame(byte[] data,Camera camera)

里data.length明显和width * hight * 3 / 2得到的length不等

到底是什么原因呢？

try {

mycamera = Camera.open();

mycamera.startPreview();

mParameters = mycamera.getParameters();//得到摄像参数

ListSupportedPreviewSizes = mParameters.getSupportedPreviewSizes();

optimalSize = mParameters.getPreviewSize() ;

for (Size size : SupportedPreviewSizes)

{

if(size.width * size.height < 300000)

{

continue ;

}

if(optimalSize.height * size.width != optimalSize.width * size.height)

{

continue ;

}

if (size.width < optimalSize.width)

{

optimalSize = size ;

}

}

Log.e("UI", "width = " + optimalSize.width + " height = " + optimalSize.height);

if (optimalSize != null)

mParameters.setPreviewSize(optimalSize.width, optimalSize.height);

mycamera.setParameters(mParameters);

mycamera.setPreviewDisplay(mSurfaceview.getHolder());

} catch (IOException e) {}

这是我改动的代码 只是增加了

if(optimalSize.height * size.width != optimalSize.width * size.height)

执行后就不花屏了！！！！！！！

原来视频流的帧要保持宽高比例！！！