Android中的相机图像返回缩略图

在我的Android应用程序中，我想从相机捕捉图像并将该图像Uri传递给下一个活动。Android中的相机图像返回缩略图

在这里，我正在获取捕获图像的缩略图图像。为了解决这个问题，我使用了MediaStore.EXTRA_OUTPUT作为我的图片捕获意图。

现在，我不知道如何获取当前捕获的图像的uri。我尝试了下面的代码，并在下一个活动中传递了imageUri，但它抛出了NoSuchFileDirectory异常。

我提到this链接，但没有得到任何明确的想法获取捕获的图像Uri并将其传递到下一个活动。请帮我解决这个问题。如果您发现此代码有任何问题，请提出我要出错的地方。

代码：

 btnCamera.setOnClickListener(new OnClickListener() { 

      @Override 
      public void onClick(View v) { 
       dialog.dismiss(); 
       Intent pictureActionIntent = new Intent(
         android.provider.MediaStore.ACTION_IMAGE_CAPTURE); 

       File photo = null; 
       try { 

        photo = SaveCameraImage(); 

       } catch (Exception e) { 
        Log.e("Camera capture-------------", 
          "Can't create file to take picture!"); 
        Toast.makeText(SelectFrameActivity.this, 
          "Please check SD card! Image shot is impossible!", 
          10000).show(); 

       } 
       mImageUri = Uri.fromFile(photo); 
       pictureActionIntent 
         .putExtra(MediaStore.EXTRA_OUTPUT, mImageUri); 

       startActivityForResult(pictureActionIntent, TAKE_PICTURE); 
      } 
     }); 


private File SaveCameraImage() { 
     try { 
      SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMdd_HHmmss"); 
      String dt = sdf.format(new Date()); 

      imageFile = null; 
      imageFile = new File(Environment.getExternalStorageDirectory(), 
        "FrameFace/" + "Camera_" + dt + ".png"); 
      Log.e("New Camera Image Path:-", 
        Environment.getExternalStorageDirectory() + "/FrameFace/" 
          + "Camera_" + dt + ".png"); 

      if (!imageFile.exists()) 
       imageFile.createNewFile(); 

      bmp_camera_image.compress(Bitmap.CompressFormat.PNG, 100, 
        new FileOutputStream(imageFile)); 

      Log.e("imagetext", "the file has saved to the sdcard"); 

      imagePath = Environment.getExternalStorageDirectory() 
        + "/FrameFace/" + "Camera_" + dt + ".png"; 

      Log.e("FaceFrameActivity - SaveCameraImage: ", "Image is Saved to" 
        + imagePath); 

     } catch (Exception ex) { 
      ex.printStackTrace(); 
     } 
     return imageFile; 
    } 

@Override 
    protected void onActivityResult(int requestCode, int resultCode, 
      final Intent data) { 
     super.onActivityResult(requestCode, resultCode, data); 
     switch (requestCode) { 
     case TAKE_PICTURE: 
      Log.e("result code: ", Integer.toString(Activity.RESULT_OK) + " " 
        + Integer.toString(resultCode)); 

      if (resultCode == Activity.RESULT_OK) { 

       // bmp_camera_image = (Bitmap) data.getExtras().get("data"); 
       SaveCameraImage(); 

       // this.getContentResolver().notifyChange(mImageUri, null); 
       // ContentResolver cr = this.getContentResolver(); 
       // try { 
       // GlobalClass.cameraBitmap = 
       // android.provider.MediaStore.Images.Media 
       // .getBitmap(cr, mImageUri); 
       // } catch (FileNotFoundException e) { 
       // // TODO Auto-generated catch block 
       // e.printStackTrace(); 
       // } catch (IOException e) { 
       // // TODO Auto-generated catch block 
       // e.printStackTrace(); 
       // } 

       Handler h = new Handler(); 
       h.postDelayed(new Runnable() { 
        @Override 
        public void run() { 

         Intent intent = new Intent(getApplicationContext(), 
           FaceCropActivity_dual.class); 
         // intent.putExtra("imagePath", imagePath); 
         intent.putExtra("imagePath", mImageUri.toString()); 
         startActivity(intent); 
        } 
       }, 500); 
      } 
      break; 
    } 
    }

来源

2014-01-06 zanky

我用这个代码，并oncick监听器删除该公司为我工作，以节省摄像机图像和获取那个形象的乌里。

btnCamera.setOnClickListener(new OnClickListener() { 

      @Override 
      public void onClick(View v) { 
       try { 
        dialog.dismiss(); 
        SimpleDateFormat sdf = new SimpleDateFormat(
          "yyyyMMdd_HHmmss"); 
        String dt = sdf.format(new Date()); 

        imageFile = null; 
        imageFile = new File(Environment 
          .getExternalStorageDirectory() + "/FrameFace/", 
          "Camera_" + dt + ".png"); 
        Log.e("New Camera Image Path:-", 
          Environment.getExternalStorageDirectory() 
            + "/FrameFace/" + "Camera_" + dt + ".png"); 

        if (!imageFile.exists()) 
         imageFile.createNewFile(); 

        imagePath = Environment.getExternalStorageDirectory() 
          + "/FrameFace/" + "Camera_" + dt + ".png"; 

        Uri outputFileUri = Uri.fromFile(imageFile); 

        Intent pictureActionIntent = new Intent(
          android.provider.MediaStore.ACTION_IMAGE_CAPTURE); 

        pictureActionIntent.putExtra(MediaStore.EXTRA_OUTPUT, 
          outputFileUri); 

        startActivityForResult(pictureActionIntent, TAKE_PICTURE); 
       } catch (Exception ex) { 
        ex.printStackTrace(); 
       } 
      } 
     }); 
@Override 
    protected void onActivityResult(int requestCode, int resultCode, 
      final Intent data) { 
     super.onActivityResult(requestCode, resultCode, data); 
     switch (requestCode) { 
     case TAKE_PICTURE: 
      Log.e("result code: ", Integer.toString(Activity.RESULT_OK) + " " 
        + Integer.toString(resultCode)); 

      if (resultCode == Activity.RESULT_OK) { 
Handler h = new Handler(); 
       h.postDelayed(new Runnable() { 
        @Override 
        public void run() { 

         Intent intent = new Intent(getApplicationContext(), 
           FaceCropActivity_dual.class); 
         // intent.putExtra("imagePath", imagePath); 
         Log.e("Image Path-------------", "" + imagePath); 
         intent.putExtra("imagePath", imagePath); 
         startActivity(intent); 
        } 
       }, 500); 
      } 
      break; 
} 
    }

来源

2014-01-06 11:36:11 zanky

imageFile = new File(Environment.getExternalStorageDirectory(), 
       "FrameFace/" + "Camera_" + dt + ".png");

这里你创建子目录，并一个炮打响的文件。创建目录，然后图像文件

更新试试这个

imageFile = new File(Environment.getExternalStorageDirectory()+"/FrameFace" ,"Camera_" + dt + ".png");

从

  File photo = null; 
      try { 

       photo = SaveCameraImage(); 

      } catch (Exception e) { 
       Log.e("Camera capture-------------", 
         "Can't create file to take picture!"); 
       Toast.makeText(SelectFrameActivity.this, 
         "Please check SD card! Image shot is impossible!", 
         10000).show(); 

      }

来源

2014-01-06 07:39:43 Sush

不，我已经在PreviousActivity中创建了目录“FrameFace”。它的工作正常。在这里我只是创建新的文件来保存图像。 – zanky

尝试更新ans – Sush

它没有区别，因为两者都给出相同的Uri。它不会解决我的问题。 – zanky

我创建了一个包装来帮助你。请参阅关于stackoverflow here的全部讨论或在github上查找代码。

来源

2014-02-02 10:58:55 Ralf

Android中的相机图像返回缩略图

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