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  • Android录制视频报错setVideoSize called in a invalid state 1

    录制视频时想获取手机支持的录制视频的分辨率,使用代码如下:

    List<Camera.Size> videoSize = camera.getParameters().getSupportedVideoSizes();
    Iterator<Camera.Size> itos = videoSize.iterator();
            while (itos.hasNext()) {
                Camera.Size curSize = itos.next();
                int curSupporSize = curSize.width * curSize.height;
                int fixPictrueSize = setFixPictureWidth * setFixPictureHeight;
                if (curSupporSize > fixPictrueSize) {
                    setFixPictureWidth = curSize.width;
                    setFixPictureHeight = curSize.height;
                }
            }
    mediaRecorder.setVideoSize(setFixPictureWidth,
            setFixPictureHeight);

    出现了两次错误,一次是录制视频时调用camera.getParameters()时报parameters is empty,这是由于在camera.unlock()之后调用了该函数,将其在unlock之前获取就ok了。
    还有一个错误就是setVideoSize called in a invalid state 1,进入setVideoSize函数中可以发现抛出异常的条件说明

     /**
         * Sets the width and height of the video to be captured.  Must be called
         * after setVideoSource(). Call this after setOutFormat() but before
         * prepare().
         *
         * @param width the width of the video to be captured
         * @param height the height of the video to be captured
         * @throws IllegalStateException if it is called after
         * prepare() or before setOutputFormat()
         */
        public native void setVideoSize(int width, int height)
                throws IllegalStateException;

    IllegalStateException if it is called after prepare() or before setOutputFormat()表示如果setVideoSize在prepare() 之后或者setOutputFormat()之前调用的话就会出现该异常,即是说要求setVideoSize函数在prepare()之前以及setOutputFormat()之后调用。
    查了下代码,发现我调用setVideoSize竟然是在setOutputFormat()之前,改到setOutputFormat()之后就ok了。

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  • 原文地址:https://www.cnblogs.com/ldq2016/p/6340216.html
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