Android條用照相機，實作可剪切功能

public class CameraActivity extends Activity {
 CameraView cameraView;
 Button btnOpenCamera, btnShowPhoto, btnHelp;
 int markView = 0;
 boolean isMarkImageShow = false;
 
 /*用來辨別請求照相功能的activity*/  
    private static final int CAMERA_WITH_DATA = 3023;  
 
    /*用來辨別請求gallery的activity*/  
    private static final int PHOTO_PICKED_WITH_DATA = 3021;  
 
    private File mCurrentPhotoFile;//照相機拍照得到的圖檔  
 
 @Override
 protected void onCreate(Bundle savedInstanceState) {
 // TODO Auto-generated method stub
 super.onCreate(savedInstanceState);
// requestWindowFeature(Window.FEATURE_NO_TITLE);
// getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
// WindowManager.LayoutParams.FLAG_FULLSCREEN);
 setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
 setContentView(R.layout.camera);
 cameraView = new CameraView(this);
 initButtons();
 
 
 }
 
 public void initButtons(){
 btnOpenCamera = (Button)findViewById(R.id.camera_open);
 btnShowPhoto = (Button)findViewById(R.id.camera_show_photo);
 btnHelp = (Button)findViewById(R.id.camera_help);
 btnOpenCamera.setOnClickListener(new OnClickListener() {
 @Override
 public void onClick(View v) {
 // TODO Auto-generated method stub
// setContentView(cameraView);
// cameraView.requestFocus();
// cameraView.setFocusable(true);
 
// Intent intent = new Intent();
// intent.setClass(CameraActivity.this, CameraOpenActivity.class);
// intent.setAction("android.media.action.STILL_IMAGE_CAMERA");
// startActivity(intent);
 
 doTakePhoto();
 
 }
 });
 btnShowPhoto.setOnClickListener(new OnClickListener() {
 @Override
 public void onClick(View v) {
 // TODO Auto-generated method stub
// Intent intent = new Intent();
// intent.setClass(CameraActivity.this, ShowPictureActivity.class);
// startActivity(intent);
// finish();
 
 doPickPhotoFromGallery();
 }
 });
 btnHelp.setOnClickListener(new OnClickListener() {
 @Override
 public void onClick(View v) {
 // TODO Auto-generated method stub
 }
 });
 }
 
 /**
  * 拍照擷取圖檔
  * 
  */
 protected void doTakePhoto() {
 String path = Environment.getExternalStorageDirectory()
 .getAbsolutePath() + File.separator + "ToolBoxfiles";
 File dir = new File(path);
 if (!dir.exists()) {
 dir.mkdirs();
 }
 if (dir.exists()) {
 try {
 Date date = new Date(System.currentTimeMillis());
 SimpleDateFormat dateFormat = new SimpleDateFormat(
 "'IMG'_yyyy-MM-dd_HH-mm-ss");
 String fileName = dateFormat.format(date) + ".jpg";
 mCurrentPhotoFile = new File(path, fileName);
 
 Uri u = Uri.fromFile(mCurrentPhotoFile);
 Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE,
 null);
 intent.putExtra(MediaStore.EXTRA_OUTPUT, u);
 startActivityForResult(intent, CAMERA_WITH_DATA);
 } catch (Exception e) {
 // TODO: handle exception
 Toast.makeText(this, "--doTakePhoto--", Toast.LENGTH_LONG).show();
 }
 }
 }
 
 protected void doCropPhoto(File f) {
 try {
 // 啟動gallery去剪輯這個照片
 final Intent intent = getCropImageIntent(Uri.fromFile(f));
 startActivityForResult(intent, PHOTO_PICKED_WITH_DATA);
 } catch (Exception e) {
 Toast.makeText(this, "--doCropPhoto--", Toast.LENGTH_LONG).show();
 }
 }
 
 /**
  * Constructs an intent for image cropping. 調用圖檔剪輯程式
  */
 public static Intent getCropImageIntent(Uri photoUri) {
 Intent intent = new Intent("com.android.camera.action.CROP");
 intent.setDataAndType(photoUri, "image/*");
 intent.putExtra("crop", "true");
 intent.putExtra("aspectX", 1);
 intent.putExtra("aspectY", 1);
 intent.putExtra("outputX", 80);
 intent.putExtra("outputY", 80);
 intent.putExtra("return-data", true);
 return intent;
 }
 
 // 請求Gallery程式
 protected void doPickPhotoFromGallery() {
 try {
 // Launch picker to choose photo for selected contact
 final Intent intent = getPhotoPickIntent();
 startActivityForResult(intent, PHOTO_PICKED_WITH_DATA);
 } catch (ActivityNotFoundException e) {
 Toast.makeText(this, "doPickPhotoFromGallery",
 Toast.LENGTH_LONG).show();
 }
 }
 
 // 封裝請求Gallery的intent
 public static Intent getPhotoPickIntent() {
 Intent intent = new Intent(Intent.ACTION_GET_CONTENT, null);
 intent.setType("image/*");
 intent.putExtra("crop", "true");
 intent.putExtra("aspectX", 1);
 intent.putExtra("aspectY", 1);
 intent.putExtra("outputX", 80);
 intent.putExtra("outputY", 80);
 intent.putExtra("return-data", true);
 return intent;
 }
 
 @Override
 protected void onActivityResult(int requestCode, int resultCode, Intent data) {
 // TODO Auto-generated method stub
 if (resultCode != RESULT_OK)  
            return;  
        switch (requestCode) {  
            case PHOTO_PICKED_WITH_DATA: {// 調用Gallery傳回的  
                final Bitmap photo = data.getParcelableExtra("data");  
 
//                ImageView imageView = new ImageView(this);
                ImageView imageView = (ImageView) findViewById(R.id.imageView);
                imageView.setImageBitmap(photo);
//                this.setContentView(imageView);
//                isMarkImageShow = true;
 
                // 下面就是顯示照片了  
//                System.out.println(photo);  
                //緩存使用者選擇的圖檔  
//                img = getBitmapByte(photo);  
//                mEditor.setPhotoBitmap(photo);  
//                System.out.println("set new photo");  
                break;  
            }  
            case CAMERA_WITH_DATA: {// 照相機程式傳回的,再次調用圖檔剪輯程式去修剪圖檔  
                doCropPhoto(mCurrentPhotoFile);  
 
                break;  
            }  
        }  
 
 }
 
 @Override
 protected void onDestroy() {
 // TODO Auto-generated method stub
 super.onDestroy();
 }
 
 @Override
    public boolean onKeyDown(int keyCode, KeyEvent event) {
     if(keyCode == KeyEvent.KEYCODE_BACK && event.getRepeatCount() == 0){
     if(isMarkImageShow){
//     isMarkImageShow = false;
//     this.setContentView(R.layout.camera);
     
     }else{
     Intent intent = new Intent();
     intent.setClass(CameraActivity.this, ToolBoxActivity.class);
     startActivity(intent);
     finish();
     }
     
     return true;
     }
     return super.onKeyDown(keyCode, event);
    }
}
 
 
 
 
自己寫的照相機，還有待改進
 
 
public class CameraOpenActivity extends Activity {
 /** Called when the activity is first created. */
 private SurfaceView surfaceView;
 private Button buttonTakePhoto, buttonGoBack, buttonShowPicture;
 private Camera camera;
 
 @Override
 public void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
//  this.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);// 設定橫屏
//  this.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_BEHIND);// 設定橫屏
 // requestWindowFeature(Window.FEATURE_NO_TITLE);// 沒有标題
 // getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
 // WindowManager.LayoutParams.FLAG_FULLSCREEN);// 設定全屏
 // getWindow().setFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON,
 // WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);// 螢幕亮度的持續
 
 setContentView(R.layout.camera_open);
 
 surfaceView = (SurfaceView) this.findViewById(R.id.surface_view);
// surfaceView.set
 surfaceView.getHolder().setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
 // surface.getHolder().setFixedSize(176, 144);
 surfaceView.getHolder().addCallback(new SurfaceCallback());
 
 initButtons();
 
 }
 
 public void initButtons() {
 buttonTakePhoto = (Button) findViewById(R.id.button_take_photo);
 buttonTakePhoto.setOnClickListener(new OnClickListener() {
 @Override
 public void onClick(View v) {
 // TODO Auto-generated method stub
 // 停止預覽
 takePic();
 }
 });
 
 buttonShowPicture = (Button) findViewById(R.id.button_show_picture);
 buttonShowPicture.setOnClickListener(new OnClickListener() {
 @Override
 public void onClick(View v) {
 // TODO Auto-generated method stub
 
 }
 });
 
 buttonGoBack = (Button) findViewById(R.id.button_go_back);
 buttonGoBack.setOnClickListener(new OnClickListener() {
 @Override
 public void onClick(View v) {
 // TODO Auto-generated method stub
 Intent intent = new Intent();
 intent.setClass(CameraOpenActivity.this, CameraActivity.class);
 startActivity(intent);
 finish();
 }
 });
 
 }
 
 private class SurfaceCallback implements Callback {
 
 @Override
 public void surfaceCreated(SurfaceHolder holder) {
 // TODO Auto-generated method stub
 camera = Camera.open();
 try {
 camera.setPreviewDisplay(holder);
 } catch (IOException e) {
 // TODO Auto-generated catch block
 e.printStackTrace();
 }
 }
 
 @Override
 public void surfaceChanged(SurfaceHolder holder, int format, int width,
 int height) {
 // TODO Auto-generated method stub
 // 擷取相機參數
 Camera.Parameters parameters = camera.getParameters();
 // 設定照片大小
 parameters.setPreviewSize(width, height);
 // 設定照片格式
 parameters.setPictureFormat(PixelFormat.JPEG);
 // 設定相機參數
 camera.setParameters(parameters);
 camera.startPreview();
 }
 
 @Override
 public void surfaceDestroyed(SurfaceHolder holder) {
 // TODO Auto-generated method stub
 // 停止預覽
 camera.stopPreview();
 // 釋放相機資源
 if (camera != null)
 camera.release();
 camera = null;
 }
 }
 
 // 執行儲存照片任務
 Camera.PictureCallback pictureCallback = new Camera.PictureCallback() {
 @Override
 public void onPictureTaken(byte[] data, Camera camera) {
 // TODO Auto-generated method stub
 new SavePictureTask().execute(data);
 camera.startPreview();
 }
 };
 
 class SavePictureTask extends AsyncTask<byte[], String, String> {
 
 @Override
 protected String doInBackground(byte[]... params) {
 // TODO Auto-generated method stub
 String path = Environment.getExternalStorageDirectory()
 .getAbsolutePath() + File.separator + "ToolBoxfiles";
 File dir = new File(path);
 if (!dir.exists()) {
 dir.mkdirs();
 }
 if (dir.exists()) {
 try {
 File file = new File(path, System.currentTimeMillis()
 + ".jpg");
 FileOutputStream outputStream = new FileOutputStream(file);
 outputStream.write(params[0]);
 outputStream.close();
 camera.startPreview();
 } catch (Exception e) {
 // TODO: handle exception
 }
 }
 
 return null;
 }
 
 }
 
 // 拍照方法
 public void takePic() {
 // 停止預覽
 camera.stopPreview();
 // 拍照
 camera.takePicture(null, null, pictureCallback);
 }
 
 @Override
 protected void onDestroy() {
 // TODO Auto-generated method stub
 super.onDestroy();
 }
 
 @Override
 public boolean onKeyDown(int keyCode, KeyEvent event) {
 if (keyCode == KeyEvent.KEYCODE_BACK && event.getRepeatCount() == 0) {
 Intent intent = new Intent();
 intent.setClass(CameraOpenActivity.this, CameraActivity.class);
 startActivity(intent);
 finish();
 return true;
 }
 return super.onKeyDown(keyCode, event);
 }
}