解决Android实现照相机程序时不能显示摄像头的问题

try {camera.setPreviewDisplay(surfaceHolder);} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}// 开始预览camera.startPreview();

上面两行代码不能放在初始化的Camera里面，需要放在surfaceChanged()和surfaceCreated()方法内！！

public void surfaceChanged(SurfaceHolder holder, int format, int width,    int height){try {camera.setPreviewDisplay(surfaceHolder);} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}// 开始预览camera.startPreview();   }   @Override   public void surfaceCreated(SurfaceHolder holder){    // surface被创建时打开摄像头    initCamera();try {camera.setPreviewDisplay(surfaceHolder);} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}// 开始预览camera.startPreview();   }