Question

我正在开发一个应用程序，我想从相机中捕获图像并将其显示在图像视图中的另一个活动中，我的问题是能够捕获图像但是在捕获后我被重定向到第一个活动而不是第二个。

这是我的代码.. PictureOptions.java

public void buttonCameraOpen(View view)
{
    // create Intent to take a picture and return control to the calling application
    Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);

    fileUri = getOutputMediaFileUri(MEDIA_TYPE_IMAGE); // create a file to save the image
    intent.putExtra(MediaStore.EXTRA_OUTPUT, fileUri); // set the image file name

    // start the image capture Intent
    startActivityForResult(intent, CAPTURE_IMAGE_ACTIVITY_REQUEST_CODE);
}

private static Uri getOutputMediaFileUri(int type){
      return Uri.fromFile(getOutputMediaFile(type));
}

/** Create a File for saving an image or video */
private static File getOutputMediaFile(int type){
    // To be safe, you should check that the SDCard is mounted
    // using Environment.getExternalStorageState() before doing this.

    File mediaStorageDir = new File(Environment.getExternalStoragePublicDirectory(
              Environment.DIRECTORY_PICTURES), "Easy Heal");
    // This location works best if you want the created images to be shared
    // between applications and persist after your app has been uninstalled.

    // Create the storage directory if it does not exist
    if (! mediaStorageDir.exists()){
        if (! mediaStorageDir.mkdirs()){
            Log.d("MyCameraApp", "failed to create directory");
            return null;
        }
    }

 // Create a media file name
    String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
    File mediaFile;
    if (type == MEDIA_TYPE_IMAGE){
        mediaFile = new File(mediaStorageDir.getPath() + File.separator +
        "IMG_"+ timeStamp + ".jpg");
    } else {
        return null;
    }

    return mediaFile;
}

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
     Bitmap selectedphoto   = null;

     super.onActivityResult(requestCode, resultCode, data);

     if (requestCode == CAPTURE_IMAGE_ACTIVITY_REQUEST_CODE  && resultCode == RESULT_OK && null!=data) {

            // Image captured and saved to fileUri specified in the Intent
            //selectedphoto = (Bitmap) data.getExtras().get("data");
            Uri selectedImage = data.getData();
             String [] filePathColumn = {MediaStore.Images.Media.DATA};
             Cursor cursor = getContentResolver().query(selectedImage, filePathColumn, null, null, null);
             cursor.moveToFirst();   
             int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
             String filePath = cursor.getString(columnIndex);
             File f =new File(filePath);
             String filename = f.getName();
             cursor.close();
             selectedphoto = BitmapFactory.decodeFile(filePath);

             Intent intent = new Intent(PictureOptions.this,ShowImage.class);
             //intent.putExtra("data", selectedphoto);
             intent.setData( selectedImage );
             startActivity(intent);
        } else if (resultCode == RESULT_CANCELED) {
            // User cancelled the image capture
        } else {
            // Image capture failed, advise user
       }

}

PictureOptions.xml

<Button
    android:id="@+id/buttonCameraOpen"
    android:layout_width="fill_parent"
    android:layout_height="72dp"
    android:layout_weight="0.35"
    android:onClick="buttonCameraOpen"
    android:text="@string/button_camera_open" />

ShowImage.java

protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_show_image);
    ImageView imageview = (ImageView)findViewById(R.id.ImageShow);
    Uri imageUri = getIntent().getData();
    //Bitmap selectedphoto  =(Bitmap)this.getIntent().getParcelableExtra("data");
    imageview.setImageURI(imageUri);
}

ShowImage.xml

 <ImageView
    android:id="@+id/ImageShow"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent" />

Answer 1

我终于找到了一个很棒的解决方案此库用于从相机捕获图像或从库中选择，并以File格式以onActivityResult方式返回图像，可在应用程序中进一步使用。使用

EasyImage Library

Answer 2

Uri uriSavedImage=Uri.fromFile(new File("/sdcard/flashCropped.png"));
camera.putExtra(MediaStore.EXTRA_OUTPUT, uriSavedImage);
startActivityForResult(camera, 1);

单击图像后，检查它是否存在。然后将图像文件的路径发送到下一个活动，并通过位图显示它。

Answer 3

调用相机意图 Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE); if (takePictureIntent.resolveActivity(getPackageManager()) != null) { startActivityForResult(takePictureIntent, REQUEST_IMAGE_CAPTURE); }

然后关于结果的活动使用此

'case REQUEST_IMAGE_CAPTURE:
                       Bundle extras = data.getExtras();
                       Bitmap imageBitmap = (Bitmap) extras.get("data");
                       saveBitmap(imageBitmap); 
                       mimageView1.setImageBitmap(imageBitmap);
                       mIntent.putExtra("ACTIVITY_CODE", 1);
                       startActivity(mIntent);
                       break;

在同一个类中添加此方法

 public void saveBitmap(Bitmap bmp)
    {
        String file_path = Environment.getExternalStorageDirectory().getAbsolutePath() +"/DCIM";
          try
          {
            File dir = new File(file_path);
            if(!dir.exists())
               dir.mkdirs();
            File file = new File(dir, "time");
            cameraUrl=file.getAbsolutePath();
            FileOutputStream fOut = new FileOutputStream(file);
            bmp.compress(Bitmap.CompressFormat.PNG, 100, fOut);
            fOut.flush();
            fOut.close();
          }
          catch (Exception e) {
           Log.e("errr in ","inserting the image at parictular location");
     }
    }

然后在你想要图像的另一个活动中调用它

String valueC = getIntent().getExtras().getString("CAMERA");
         Log.v("imageBitmap", ""+valueC);
         Bitmap yourSelectedImageC = BitmapFactory.decodeFile(valueC);
         mImgV_image.setImageBitmap(yourSelectedImageC);

Answer 4

我花了两天后才得到同样的问题，最后我得到了答案

第一项活动

if (requestCode == CAMERA_REQUEST && resultCode == RESULT_OK && data != null) {
        Uri uri = data.getData();
        Intent intent= new Intent(this,SecondActivity.class);
        selfiSrc.putExtra("imgurl", uri );
        startActivity(intent);
    }

SecondActivity

Imageview iv_photo=(ImageView)findViewById(R.id.iv_photo);
Bundle extras= getIntent().getExtras();
if(extras!=null)
{
    path = (Uri) extras.get("imgurl");
    iv_photo.setImageURI(path);
}

另一种方式看我的回答 Android - how can i transfer ImageView from one activity to another activity?

从相机捕获图像并在android中的另一个活动中显示它

4 个答案: