拿相机的屏幕截图,同时记录 - 银河S3样? [英] Take camera screenshot while recording - Like in Galaxy S3?
问题描述
林开发相机应用,它使用SurfaceView显示。
Im developing a camera app which uses SurfaceView for display.
我能够采取SurfaceView的截图(并将其保存为位图)
与getDrawingCache()(在版面包装了SurfaceView)
并且还与canvas.drawBitmap(...)
I'm able to take screenshot of the SurfaceView (and save it as a bitmap)
with getDrawingCache() (on a layout which wraps the SurfaceView)
and also with canvas.drawBitmap(...)
然而,在这两个方面,位图始终是透明/空白。
however in both ways, the bitmap is always transparent/blank.
我有银河S3,我可以看到他们有这个功能在他们的相机 他们究竟如何做到的呢?
I have galaxy S3 and I can see that they have that feature in their camera how exactly they do it?
谢谢!
推荐答案
嗯小时后,我得到了一个很好的解决方案。照片 也许这是不是最好的方式,但它是很好的足够了。
Well after hours, I got a nice solution for that.
Maybe it isn't the best way, but it is good enough for me.
private long start;
private long end;
private long period;
首先得到启动时间媒体记录器启动后右:
First get a start time right after the media recorder starts:
private void startRecording()
{
mMediaRecoder.start();
start = System.currentTimeMillis();
}
然后,当u屏幕/按钮采取截图preSS,保存期:
Then, when u press on the screen/button for taking screenshot, save the period:
private void captureImage()
{
end = System.currentTimeMillis();
period = end - start;
}
最后,当你停止录制,使用周期和媒体检索得到的位图:
Finally, when you stop recording, get the bitmap using the period and the Media retriever:
private void saveVideo()
{
MediaMetadataRetriever retriever = new MediaMetadataRetriever();
//path -> the path to the video
retriever.setDataSource(path);
Bitmap bitmap = retriever.getFrameAtTime(period * 1000,MediaMetadataRetriever.OPTION_CLOSEST);
}
希望它可以帮助你!
Hope it helps you!
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