如何將相機照片保存到我的Android應用程序中的相冊文件夾

Question

上午是Android新手。我要創建一個Android應用程序。我想在我的應用程序中創建一個相冊文件夾，並將相機照片保存到相冊文件夾中。請告訴我如何。

我的代碼是：

公共類CameraPhotoCapture延伸活動{

final static int CAPTURE_IMAGE_ACTIVITY_REQUEST_CODE = 1; 


Uri imageUri      = null; 
static TextView imageDetails  = null; 
public static ImageView showImg = null; 
CameraPhotoCapture CameraActivity = null; 


@Override 
protected void onCreate(Bundle savedInstanceState) { 

    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_camera_photo_capture); 
    CameraActivity = this; 

    imageDetails = (TextView) findViewById(R.id.imageDetails); 

    showImg = (ImageView) findViewById(R.id.showImg); 

    final Button photo = (Button) findViewById(R.id.photo); 



    photo.setOnClickListener(new OnClickListener() { 
     public void onClick(View v) { 

      /***** Define the file-name to save photo taken by Camera activity *******/ 
      String fileName = "Camera_Example.jpg"; 

      // Create parameters for Intent with filename 

      ContentValues values = new ContentValues(); 

      values.put(MediaStore.Images.Media.TITLE, fileName); 

      values.put(MediaStore.Images.Media.DESCRIPTION,"Image capture by camera"); 

      /****** imageUri is the current activity attribute, define and save it for later usage *****/ 
      imageUri = getContentResolver().insert(
        MediaStore.Images.Media.EXTERNAL_CONTENT_URI, values); 

      /****** EXTERNAL_CONTENT_URI : style URI for the "primary" external storage volume. ******/ 


      /****** Standard Intent action that can be sent to have the camera application capture an image and return it. ******/ 

      Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE); 

      intent.putExtra(MediaStore.EXTRA_OUTPUT, imageUri); 

      intent.putExtra(MediaStore.EXTRA_VIDEO_QUALITY, 1); 

      startActivityForResult(intent, CAPTURE_IMAGE_ACTIVITY_REQUEST_CODE); 

     } 

    }); 
} 

@Override 
protected void onActivityResult(int requestCode, int resultCode, Intent data) 
    { 
     if (requestCode == CAPTURE_IMAGE_ACTIVITY_REQUEST_CODE) { 

      if (resultCode == RESULT_OK) { 

       String imageId = convertImageUriToFile(imageUri,CameraActivity); 

       new LoadImagesFromSDCard().execute(""+imageId); 


      } else if (resultCode == RESULT_CANCELED) { 

       Toast.makeText(this, "Picture was not taken", Toast.LENGTH_SHORT).show(); 
      } else { 

       Toast.makeText(this, "Picture was not taken", Toast.LENGTH_SHORT).show(); 
      } 
     } 
    } 


public static String convertImageUriToFile (Uri imageUri, Activity activity) { 
     Cursor cursor = null; 
     int imageID = 0; 

     try { 
      /*********** Which columns values want to get *******/ 
      String [] proj={ 
          MediaStore.Images.Media.DATA, 
          MediaStore.Images.Media._ID, 
          MediaStore.Images.Thumbnails._ID, 
          MediaStore.Images.ImageColumns.ORIENTATION 
          }; 

      cursor = activity.managedQuery( 

          imageUri, // Get data for specific image URI 
          proj,  // Which columns to return 
          null,  // WHERE clause; which rows to return (all rows) 
          null,  // WHERE clause selection arguments (none) 
          null  // Order-by clause (ascending by name) 

         );  

      int columnIndex = cursor.getColumnIndexOrThrow(MediaStore.Images.Media._ID); 
      int columnIndexThumb = cursor.getColumnIndexOrThrow(MediaStore.Images.Thumbnails._ID); 
      int file_ColumnIndex = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA); 
      //int orientation_ColumnIndex = cursor.getColumnIndexOrThrow(MediaStore.Images.ImageColumns.ORIENTATION); 

      int size = cursor.getCount(); 

      /******* If size is 0, there are no images on the SD Card. *****/ 

      if (size == 0) { 
       imageDetails.setText("No Image"); 
      } 
      else 
      { 

       int thumbID = 0; 
       if (cursor.moveToFirst()) { 

        /**************** Captured image details ************/ 

        /***** Used to show image on view in LoadImagesFromSDCard class ******/ 
        imageID = cursor.getInt(columnIndex); 

        thumbID = cursor.getInt(columnIndexThumb); 

        String Path = cursor.getString(file_ColumnIndex); 

        //String orientation = cursor.getString(orientation_ColumnIndex); 

        String CapturedImageDetails = " CapturedImageDetails : \n\n" 
                 +" ImageID :"+imageID+"\n" 
                 +" ThumbID :"+thumbID+"\n" 
                 +" Path :"+Path+"\n"; 

        // Show Captured Image detail on view 
        imageDetails.setText(CapturedImageDetails); 

       } 
      }  
     } finally { 
      if (cursor != null) { 
       cursor.close(); 
      } 
     } 

     return ""+imageID; 
    } 


    /** 
    * Async task for loading the images from the SD card. 
    * 
    * @author Android Example 
    * 
    */ 
    // Class with extends AsyncTask class 
    public class LoadImagesFromSDCard extends AsyncTask<String, Void, Void> { 

     private ProgressDialog Dialog = new ProgressDialog(CameraPhotoCapture.this); 

     Bitmap mBitmap; 

     protected void onPreExecute() { 
      /****** NOTE: You can call UI Element here. *****/ 

      //UI Element 
      Dialog.setMessage("Loading image from Sdcard.."); 
      Dialog.show(); 
     } 

     // Call after onPreExecute method 
     protected Void doInBackground(String... urls) { 

      Bitmap bitmap = null; 
      Bitmap newBitmap = null; 
      Uri uri = null;  


       try { 

        /** Uri.withAppendedPath Method Description 
        * Parameters 
        * baseUri Uri to append path segment to 
        * pathSegment encoded path segment to append 
        * Returns 
        * a new Uri based on baseUri with the given segment appended to the path 
        */ 

        uri = Uri.withAppendedPath(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, "" + urls[0]); 

        /************** Decode an input stream into a bitmap. *********/ 
        bitmap = BitmapFactory.decodeStream(getContentResolver().openInputStream(uri)); 

        if (bitmap != null) { 

         /********* Creates a new bitmap, scaled from an existing bitmap. ***********/ 

         newBitmap = Bitmap.createScaledBitmap(bitmap, 170, 170, true); 

         bitmap.recycle(); 

         if (newBitmap != null) { 

          mBitmap = newBitmap; 
         } 
        } 
       } catch (IOException e) { 
        //Error fetching image, try to recover 

        /********* Cancel execution of this task. **********/ 
        cancel(true); 
       } 

      return null; 
     } 

     protected void onPostExecute(Void unused) { 

      // NOTE: You can call UI Element here. 

      // Close progress dialog 
      Dialog.dismiss(); 

      if(mBitmap != null) 
       showImg.setImageBitmap(mBitmap); 

     } 

    } 

}

Answer 1

試試這個。

String path = Environment.getExternalStorageDirectory() + "/appsalbum/example.jpg"; 
File file = new File(path); 
Uri outputFileUri = Uri.fromFile(file); 
Intent intent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE); 
intent.putExtra(MediaStore.EXTRA_OUTPUT, outputFileUri); 
startActivityForResult(intent, CAPTURE_IMAGE);