android 录音转成MP3

应用背景图片可从网上获取，也可自定义为本地。实现将图片裁剪成圆形图片或圆角方形，根据图片大小，最多定义2个边框。最后将裁剪后的圆形图片保存在本地。代码比较明确，非常适合新手学习。关键技术canvas，自定义View,对Bitmap的压缩，裁剪，保存本地，缓存读取处理。

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【核心代码】 public interface CameraSource {  static final String LOG_TAG = "camera";  /**  * Open the camera source for subsequent use via calls to capture().  *   * @return true if the camera source was successfully opened.  */  boolean open();  /**  * Close the camera source. Calling close on a closed CameraSource is  * permitted but has no effect. The camera source may be reopened after  * being closed.  */  void close();  /**  * The width of the captured image.  *   * @return the width of the capture in pixels  */  int getWidth();  /**  * The height of the captured image.  *   * @return the height of the capture in pixels  */  int getHeight();  /**  * Attempts to render the current camera view onto the supplied canvas.  * The capture will be rendered into the rectangle (0,0,width,height).  * Outstanding transformations on the canvas may alter this.  *   * @param canvas the canvas to which the captured pixel data will be written  * @return true iff a frame was successfully written to the canvas  */  boolean capture(Canvas canvas);  boolean saveImage(String savePath, String fileName); }

用户信息存在login.ini，库存信息存在txt文件

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人脸识别技术的应用：A，为Camera 添加人脸识别的功能，使得Camera 的取景器上能标识出人脸范围；如果硬件支持，可以对人脸进行对焦。B，为相册程序添加按人脸索引相册的功能，按人脸索引相册，按人脸分组，搜索相册。

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