package com.test;   
  
import android.app.Activity;   
import android.hardware.Camera;   
import android.hardware.Camera.PictureCallback;   
import android.os.Bundle;   

public class BootTestActivity extends Activity {    
  
    private Camera mCam;     

    protected void onCreate(Bundle savedInstanceState) {   
        super.onCreate(savedInstanceState);   
        setContentView(R.layout.main);   
        
                try
                {
                    mCam  = Camera.open();
                    if (mCam != null)
                    {   
                        System.out.println(“开始拍照了吗？”);
                       mCam.takePicture(null, null, pictureCallBack);   
                       System.out.println(“拍照结束了吗？”);
                    }       
                }

                catch(Exception e)
                {
                    System.out.println(e);
                }
                finally
                {
                     if (mCam != null) 
                     {
                         mCam .release();
                         System.out.println(“release”);
                     }
                }                
    }   
    
  
    private PictureCallback pictureCallBack = new Camera.PictureCallback() {

        public void onPictureTaken(byte[] data, Camera camera) {
        
            System.out.println(“可是我并没有被调用呀!”);
              
                }   
    };         
}  

权限：
     <!– 授予程序使用摄像头的权限 –>
<uses-feature android:name=”android.hardware.camera” />  
<uses-feature android:name=”android.hardware.camera.autofocus” />  
<uses-permission android:name=”android.permission.CAMERA” />  

为什么呢？在魅族MX2上就没用，但是在三星9300就行