Question

Hai是Android Application.i中的新手。使用Camera.Now生成一个代码来拍照。我想在不使用Database.i的情况下查看拍摄的照片。我不知道怎么做.AnyBody请帮帮我。提前致谢这是我的代码

private void createCamera() {
   // TODO Auto-generated method stub
   preview = new Preview(this);
   ((FrameLayout) findViewById(R.id.preview)).addView(preview);

   buttonClick = (Button) findViewById(R.id.buttonClick);
   buttonClick.setOnClickListener( new OnClickListener() {
      public void onClick(View v) {
         preview.camera.takePicture(shutterCallback, rawCallback, jpegCallback);
      }
   });

  Log.d(TAG, "onCreate'd");
}

ShutterCallback shutterCallback = new ShutterCallback() {
   public void onShutter() {
      Log.d(TAG, "onShutter'd");
   }
};

/** Handles data for raw picture */
PictureCallback rawCallback = new PictureCallback() {
   public void onPictureTaken(byte[] data, Camera camera) {
      Log.d(TAG, "onPictureTaken - raw");
   }
};

/** Handles data for jpeg picture */
PictureCallback jpegCallback = new PictureCallback() {
   public void onPictureTaken(byte[] data, Camera camera) {
      FileOutputStream outStream = null;

      try {
         outStream = new FileOutputStream(String.format("/sdcard/%d.jpg", System.currentTimeMillis())); 
         outStream.write(data);
         outStream.close();
         Log.d(TAG, "onPictureTaken - wrote bytes: " + data.length);
      } catch (FileNotFoundException e) {
         e.printStackTrace();
      } catch (IOException e) {
         e.printStackTrace();
      } finally {}

      Log.d(TAG, "onPictureTaken - jpeg");
   }
};

private void createpictures() {
   img = (ImageView)findViewById(R.id.ImageView01);

   ((Button) findViewById(R.id.Button01)).setOnClickListener(new OnClickListener() {
      public void onClick(View arg0) {
         Intent intent = new Intent();
         intent.setType("image/*");
         intent.setAction(Intent.ACTION_GET_CONTENT);
         startActivityForResult(Intent.createChooser(intent,"Select Picture"), SELECT_PICTURE);
      }
   });
}

public void onActivityResult(int requestCode, int resultCode, Intent data) {
   if (resultCode == RESULT_OK) {
      if (requestCode == SELECT_PICTURE) {
         Uri selectedImageUri = data.getData();
         selectedImagePath = getPath(selectedImageUri);
         System.out.println("Image Path : " + selectedImagePath);
         img.setImageURI(selectedImageUri);
      }
   }
}

public String getPath(Uri uri) {
   String[] projection = { MediaStore.Images.Media.DATA };
   Cursor cursor = managedQuery(uri, projection, null, null, null);
   int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
   cursor.moveToFirst();
   return cursor.getString(column_index);
}

Answer 1

这很简单：

Intent in = new Intent(Intent.ACTION_VIEW, Uri.parse("file://"+yourFileName));
startActivity(in);

用于查看图片的默认应用程序将开始，或者如果没有默认应用程序，则用户获取选择对话框以使用哪个应用程序。

Answer 2

你真的不需要使用数据库来查看拍摄的照片。

获取新图像 - 打开相机的意图。比如this
要查看所有其他捕获的图像，请打开图库。见discussion

Answer 3

通过手机上的意图打开数据的概述。所有这些文档都在这里http://developer.android.com/guide/topics/intents/intents-filters.html，但不是很清楚。

http://indyvision.net/2010/03/android-using-intents-open-files/

 File imageFile2View = new File("/sdcard/nice_photo.jpeg");
 Intent i = new Intent();
 i.setAction(android.content.Intent.ACTION_VIEW);
 i.setDataAndType(Uri.fromFile(imageFile2View), "image/jpeg");
 startActivity(i);

现在，如果你想要的是显示你在自己的活动中拍摄的照片，你可以使用。

String file = String.format("/sdcard/%d.jpg", System.currentTimeMillis());
//SAVE IMAGE TO file
img.setImageURI(URI.parse(file));

或

String file = String.format("/sdcard/%d.jpg", System.currentTimeMillis());
//SAVE IMAGE TO file
bitmap = BitmapFactory.decodeFile(file);
img.setImageBitmap(bitmap);

如何在不使用数据库的情况下在Android中查看拍摄的图片？

3 个答案: