Question

我得到Intent data = null，我不明白为什么？我正在使用来自Activity B（A to B: using an intent too (startActivity())）的意图如下：

Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
     if (intent.resolveActivity(getPackageManager()) != null) {
          File image = null;
           try {
               image = saveImageFile();
          } catch (IOException ex) {
            Toast.makeText(this, ex.getMessage(),Toast.LENGTH_LONG).show();
          }
            if (image != null) {
               intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(image ));
               startActivityForResult(intent, REQUEST_TAKE_PHOTO);
            }
    } else {
        Toast.makeText(this, "Cannot take a picture!", Toast.LENGTH_LONG).show();
    }

从我的onActivityResult我试过这个：

protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        if (requestCode == REQUEST_TAKE_PHOTO && resultCode == RESULT_OK) {
                Bundle extras = getIntent().getExtras();
                if (extras == null) {
                    return;
                }
                Bitmap myImageBitmap = (Bitmap) extras.get("data");
                scaleMyImage(myImageBitmap); 
            } else if(resultCode == RESULT_CANCELED) {
                finish();
            }
    }

我在这里保存图片：File storageDirec = this.getExternalFilesDir(Environment.DIRECTORY_PICTURES);。从调试我得到正确的参数（requestCode = 1 & resultCode = -1），但data = null？ - 有人可以告诉/帮助我为什么Intent数据为空？ - 谢谢，卡尔

为什么onActivityResult（）Intent数据等于null？

0 个答案: