Android相机意图：如何获得全尺寸照片？ [英] Android Camera Intent: how to get full sized photo?

问题描述

我使用意图启动相机：

  Intent cameraIntent = new Intent（
 android.provider.MediaStore .ACTION_IMAGE_CAPTURE）; 
 getParent（）。startActivityForResult（cameraIntent，CAMERA_PIC_REQUEST）; 
  

并使用：

  Bitmap thumbnail =（Bitmap）data.getExtras（）。get（data）; 
 photoImage.setImageBitmap（thumbnail）; 
 photoImage.setVisibility（View.VISIBLE）; 
  

但它只是一个缩略图，如何获得完整的位图？我知道我可以使用自己的活动并使用：

  Camera.PictureCallback（）
  
 
 
 
谢谢！
 
 
 
编辑：
 
 
 
我也尝试过：
  public void onActivityResult（int requestCode，int resultCode，Intent data）{
 Uri uri = data.getData（）; 
 imageView.setImageURI（uri）; 
} 
  
它适用于从图库中选择的照片，但对于相机意图，data.getData （）返回null。
解决方案
要获得完整大小的相机图片，你应该指向相机保存图片在临时文件， / p> 
 
 
 私有URI mImageUri; 
 
 Intent intent = new Intent（android.media.action.IMAGE_CAPTURE）; 
文件照片; 
 try 
 {
 //存储相机拍摄照片的位置
 photo = this.createTemporaryFile（picture，.jpg）; 
 photo.delete（）; 
} 
 catch（Exception e）
 {
 Log.v（TAG，无法创建文件拍照！ 
 Toast.makeText（活动，请检查SD卡！图像拍摄不可能！，10000）; 
 return false; 
} 
 mImageUri = Uri.fromFile（photo）; 
 intent.putExtra（MediaStore.EXTRA_OUTPUT，mImageUri）; 
 // start camera intent 
 activity.startActivityForResult（this，intent，MenuShootImage）; 
 
 private文件createTemporaryFile（String part，String ext）throws Exception 
 {
文件tempDir = Environment.getExternalStorageDirectory（）; 
 tempDir = new File（tempDir.getAbsolutePath（）+/。temp /）; 
 if（！tempDir.exists（））
 {
 tempDir.mkdirs（）; 
} 
 return File.createTempFile（part，ext，tempDir）; 
} 
  
然后在图像捕获意向完成工作后 - 只需从 imageUri 使用以下代码：
  public void grabImage（ImageView imageView）
 {
 this.getContentResolver（）。notifyChange（mImageUri，null）; 
 ContentResolver cr = this.getContentResolver（）; 
位图位图; 
 try 
 {
 bitmap = android.provider.MediaStore.Images.Media.getBitmap（cr，mImageUri）; 
 imageView.setImageBitmap（bitmap）; 
} 
 catch（Exception e）
 {
 Toast.makeText（this，Failed to load，Toast.LENGTH_SHORT）.show（）; 
 Log.d（TAG，无法加载，e）; 
} 
} 
 
 
 //相机意图完成后调用
 @Override 
 public void onActivityResult（int requestCode，int resultCode，Intent意图）
 {
 if（requestCode == MenuShootImage&& resultCode == RESULT_OK）
 {
 ImageView imageView; 
 // ...一些代码来膨胀/创建/找到合适的ImageView来放置抓取的图像
 this.grabImage（imageView）; 
} 
 super.onActivityResult（requestCode，resultCode，intent）; 
} 
  
 
I am using intent to launch camera:
Intent cameraIntent = new Intent(
    android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
getParent().startActivityForResult(cameraIntent, CAMERA_PIC_REQUEST);
and using:
Bitmap thumbnail = (Bitmap) data.getExtras().get("data");
photoImage.setImageBitmap(thumbnail);
photoImage.setVisibility(View.VISIBLE);
But it is only a thumbnail, how do I get the full bitmap? I know I can use my own Activity and use:
Camera.PictureCallback()
But is there anyway to do it using Intent?

Thanks!

edit:

I also tried:
public void onActivityResult(int requestCode, int resultCode, Intent data) {
    Uri uri = data.getData();
    imageView.setImageURI(uri);
}
It works for photo selected from gallery, but for camera intent, data.getData() returns null.
解决方案
To get full sized camera image you should point camera to save picture in temporary file, like:
    private URI mImageUri;

    Intent intent = new Intent("android.media.action.IMAGE_CAPTURE");
    File photo;
    try
    {
        // place where to store camera taken picture
        photo = this.createTemporaryFile("picture", ".jpg");
        photo.delete();
    }
    catch(Exception e)
    {
        Log.v(TAG, "Can't create file to take picture!");
        Toast.makeText(activity, "Please check SD card! Image shot is impossible!", 10000);
        return false;
    }
    mImageUri = Uri.fromFile(photo);
    intent.putExtra(MediaStore.EXTRA_OUTPUT, mImageUri);
    //start camera intent
    activity.startActivityForResult(this, intent, MenuShootImage);

private File createTemporaryFile(String part, String ext) throws Exception
{
    File tempDir= Environment.getExternalStorageDirectory();
    tempDir=new File(tempDir.getAbsolutePath()+"/.temp/");
    if(!tempDir.exists())
    {
        tempDir.mkdirs();
    }
    return File.createTempFile(part, ext, tempDir);
}
Then after image capture intent finished to work - just grab your picture from imageUri using following code:
public void grabImage(ImageView imageView)
{
    this.getContentResolver().notifyChange(mImageUri, null);
    ContentResolver cr = this.getContentResolver();
    Bitmap bitmap;
    try
    {
        bitmap = android.provider.MediaStore.Images.Media.getBitmap(cr, mImageUri);
        imageView.setImageBitmap(bitmap);
    }
    catch (Exception e)
    {
        Toast.makeText(this, "Failed to load", Toast.LENGTH_SHORT).show();
        Log.d(TAG, "Failed to load", e);
    }
}


//called after camera intent finished
@Override
public void onActivityResult(int requestCode, int resultCode, Intent intent)
{
    if(requestCode==MenuShootImage && resultCode==RESULT_OK)
    {
       ImageView imageView;
       //... some code to inflate/create/find appropriate ImageView to place grabbed image
       this.grabImage(imageView);
    }
    super.onActivityResult(requestCode, resultCode, intent);
}


                        
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