android中的照相机机拍照程序（含连续拍照）

最近用到了android中的照相机功能，android中实现拍照的方式有两种，一种是调用系统自带的照相机进行拍照，此种方法较为简单，因为是android本身就已经实现了的；另一种就是自己来实现一个拍照程序，可按照自己的方式来定义下面都附带两种方法的实现，仅供大家参考啊！

第一种，调用android自带拍照功能：

Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);

最关键的一步就是这里，调用系统的照相程序，接着实现下相片的保存地址就可以了，这是最简单也比较实用的一种方法，
此种方法唯一的缺点就是界面无法改造了，只能用系统的。

第二种，自写android拍照功能（较为复杂）：

public class ScanBarZBarActivity extends Activity implements SurfaceHolder.Callback{private static String TAG = "ScanBarZBarActivity";private Camera mCamera;//拍照、保存、继续拍    private Button mButton, mButton1, mButton2;    private SurfaceView mSurfaceView;    private SurfaceHolder holder;    private AutoFocusCallback mAutoFocusCallback = new AutoFocusCallback();    private String path = "lanjingling";//图片所在文件夹名    private String path1;    private Bitmap bmp;    private Calendar c;    public native String getISBN(Bitmap bmp);    /** Called when the activity is first created. */    @Override    public void onCreate(Bundle savedInstanceState) {            super.onCreate(savedInstanceState);            /* 隐藏状态栏 */            this.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,                            WindowManager.LayoutParams.FLAG_FULLSCREEN);            /* 隐藏标题栏 */            requestWindowFeature(Window.FEATURE_NO_TITLE);            /* 屏幕显示可转换 */            this.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);                       setContentView(R.layout.camera);            /* SurfaceHolder设定 */            mSurfaceView = (SurfaceView) findViewById(R.id.mSurfaceView);            holder = mSurfaceView.getHolder();            holder.addCallback(ScanBarZBarActivity.this);            holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);            c = Calendar.getInstance();            /* Button初始化 */            mButton = (Button) findViewById(R.id.myButton);            mButton1 = (Button) findViewById(R.id.myButton1);            mButton2 = (Button) findViewById(R.id.myButton2);            /* 拍照Button的事件处理 */            mButton.setOnClickListener(new Button.OnClickListener() {            @Override                    public void onClick(View arg0) {                            /* 告动对焦后拍照 */                            mCamera.autoFocus(mAutoFocusCallback);                    }            });            /* Button的事件处理 */              mButton1.setOnClickListener(new Button.OnClickListener() {                    @Override                    public void onClick(View arg0) {                            /* 保存文件 */                    Log.i(TAG,"click button2");                            if (bmp != null) {                                    /* 检查SDCard是否存在 */                                    if (!Environment.MEDIA_MOUNTED.equals(Environment                                                    .getExternalStorageState())) {                                            /* SD卡不存在，显示Toast信息 */                                            Toast.makeText(ScanBarZBarActivity.this,                                                            "SD卡不存在!无法保存相片,请插入SD卡。", Toast.LENGTH_LONG).show();                                    } else {                                            try {                                                    /* 文件不存在就创建 */                                                    File f = new File(Environment                                                                    .getExternalStorageDirectory(), path);                                                    Log.i(TAG,"click button2:" + f.getAbsolutePath());                                                    if (!f.exists()) {                                                            f.mkdir();                                                    }                                                    /* 保存相片文件 */                                                    path1 = String.valueOf(c.get(Calendar.MILLISECOND))                                                                    + "camera.jpg";                                                    File n = new File(f, path1);                                                    FileOutputStream bos = new FileOutputStream(n                                                                    .getAbsolutePath());                                                    /* 文件转换 */                                                    bmp.compress(Bitmap.CompressFormat.JPEG, 100, bos);                                                    bos.flush();                                                    bos.close();                                                    Toast.makeText(ScanBarZBarActivity.this,                                                                    path1 + "保存成功!", 1).show();                                                                                       } catch (Exception e) {                                                    e.printStackTrace();                                            }                                    }                            }                            mButton.setVisibility(View.VISIBLE);                            mButton1.setVisibility(View.VISIBLE);                            mButton2.setVisibility(View.VISIBLE);                                                }            });            /* 点击继续拍照 */            mButton2.setOnClickListener(new Button.OnClickListener() {                    @Override                    public void onClick(View v) {                    Log.i(TAG, mCamera.toString());                    initCamera();                    }            });    }    @Override    public void surfaceCreated(SurfaceHolder surfaceholder) {            try {                    /* 打开相机， */                    mCamera = Camera.open();                    mCamera.setPreviewDisplay(holder);                    Log.i(TAG,"create camera---");            } catch (IOException exception) {                    mCamera.release();                    mCamera = null;            }    }    @Override    public void surfaceChanged(SurfaceHolder surfaceholder, int format, int w,                    int h) {            /* 相机初始化 */    Log.i(TAG,"init camera");            initCamera();    }    @Override    public void surfaceDestroyed(SurfaceHolder surfaceholder) {    Log.i(TAG,"destoryed camera");            stopCamera();            mCamera.release();            mCamera = null;    }    /* 拍照的method */    private void takePicture() {            if (mCamera != null) {            Log.i(TAG,"takePicture");                    mCamera.takePicture(shutterCallback, rawCallback, jpegCallback);            }    }    private ShutterCallback shutterCallback = new ShutterCallback() {            public void onShutter() {            }    };    private PictureCallback rawCallback = new PictureCallback() {            public void onPictureTaken(byte[] _data, Camera _camera) {            }    };    private PictureCallback jpegCallback = new PictureCallback() {            public void onPictureTaken(byte[] _data, Camera _camera) {                    /* 取得相仞 */                    try {                            /* 设定Button可见性 */                            mButton.setVisibility(View.VISIBLE);                            mButton1.setVisibility(View.VISIBLE);                            mButton2.setVisibility(View.VISIBLE);                            /* 取得Bitmap对象 */                            bmp = BitmapFactory.decodeByteArray(_data, 0, _data.length);                                                       } catch (Exception e) {                            e.printStackTrace();                    }            }    };    /* 告定义class AutoFocusCallback */    public final class AutoFocusCallback implements                    android.hardware.Camera.AutoFocusCallback {            public void onAutoFocus(boolean focused, Camera camera) {                    /* 对到焦点拍照 */                    if (focused) {                            takePicture();                    }            }    };    /* 相机初始化的method */    private void initCamera() {            if (mCamera != null) {                    try {                            Camera.Parameters parameters = mCamera.getParameters();                                                        parameters.setPictureFormat(PixelFormat.JPEG);                            parameters.setPictureSize(1024, 768);                            mCamera.setParameters(parameters);                            /* 开启预览画面 */                            mCamera.startPreview();                            Log.i(TAG, "init camera!!!!!!------");                    } catch (Exception e) {                            e.printStackTrace();                    }            }    }    /* 停止相机的method */    private void stopCamera() {            if (mCamera != null) {                    try {                            /* 停止预览 */                            mCamera.stopPreview();                    } catch (Exception e) {                            e.printStackTrace();                    }            }    }}

附上camera.xml中的代码：

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:orientation="vertical"    android:layout_width="fill_parent"    android:layout_height="fill_parent"    ><SurfaceView android:id="@+id/mSurfaceView"  android:layout_width="700sp"  android:layout_height="fill_parent"  android:layout_weight="1" /> <Button android:id="@+id/myButton" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/button" android:layout_alignParentRight="true" android:layout_alignParentBottom="true" /> <Button android:id="@+id/myButton1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/button1" android:layout_alignParentRight="true" android:layout_above="@id/myButton" /> <Button android:id="@+id/myButton2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/button2" android:layout_alignParentRight="true" android:layout_above="@id/myButton1" /></RelativeLayout>

最后别忘了加上权限，不然没办法使用哦！
<uses-permission android:name="android.permission.CAMERA"/>
<uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-feature android:name="android.hardware.camera.autofocus"/>
<uses-feature android:name="android.hardware.camera"/>

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