Question

我有这个代码从图库上传图像或用户可以使用他们的相机拍照，但相机的结果代码返回-1并崩溃，老实说我不知道为什么。这是代码：

private Button mSelectImage;
    private Button upload;
    private ImageView mImage;
    private StorageReference mStorage;
    private static final int GALLERY_INTENT = 2;
    private static final int CAMERA_REQUEST_CODE = 7;
    private ProgressDialog progressDialog;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        mStorage = FirebaseStorage.getInstance().getReference();
        mSelectImage = (Button) findViewById(R.id.selectImage);
        upload = (Button) findViewById(R.id.captureUpload);
        progressDialog = new ProgressDialog(this);
        mImage = (ImageView) findViewById(R.id.image);

        mSelectImage.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

                Intent i = new Intent(Intent.ACTION_PICK);
                i.setType("image/*");

                startActivityForResult(i, GALLERY_INTENT);
            }
        });

        upload.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
                startActivityForResult(intent, CAMERA_REQUEST_CODE);



            }
        });
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent 
    data) {
        super.onActivityResult(requestCode, resultCode, data);
        if(requestCode == GALLERY_INTENT && resultCode == RESULT_OK)
        {
            progressDialog.setMessage("uploading...");
            progressDialog.show();
            Uri  uri = data.getData();
            StorageReference filePath = 
   mStorage.child("Photos").child(uri.getLastPathSegment());

            filePath.putFile(uri).addOnSuccessListener(new 
  OnSuccessListener<UploadTask.TaskSnapshot>() {
                @Override
                public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) 
   {
                    Toast.makeText(MainActivity.this, "Image upload 
     successful",Toast.LENGTH_LONG).show();
                    progressDialog.dismiss();
                }
            }).addOnFailureListener(new OnFailureListener() {
                @Override
                public void onFailure(@NonNull Exception e) {

                }
            });



        }
        else if(requestCode == CAMERA_REQUEST_CODE && resultCode == 
      RESULT_OK)
        {
            progressDialog.setMessage("uploading...");
            progressDialog.show();
            Uri  uri = data.getData();
            StorageReference filePath = 
    mStorage.child("Photos").child(uri.getLastPathSegment());
            filePath.putFile(uri).addOnSuccessListener(new 
      OnSuccessListener<UploadTask.TaskSnapshot>() {
                @Override
                public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) 
   {
                    Toast.makeText(MainActivity.this, "Image upload 
        successful",Toast.LENGTH_LONG).show();
                    progressDialog.dismiss();

                    Uri downloadUri = taskSnapshot.getDownloadUrl();







      Picasso.with(MainActivity.this)
       .load(downloadUri).fit().centerCrop().into(mImage);
                }
            }).addOnFailureListener(new OnFailureListener() {
                @Override
                public void onFailure(@NonNull Exception e) {

                }
            });
        }
    }
 }

当我从图库上传但在我拿相机后在相机上返回-1请求结果时，它可以正常工作。它甚至没有进入下载部分（使用Picasso）

非常感谢你的帮助!!!! 最好的问候

java.lang.RuntimeException：将结果ResultInfo {who = null，request = 7，result = -1，data = Intent {act = inline-data（has extras）}}传递给activity {com.example.user .uploadingimages / com.example.user.uploadingimages.MainActivity}：java.lang.IllegalArgumentException：uri不能为null

Answer 1

如果没有logcat，我会说这可能是一个权限问题：

<uses-permission android:name="android.permission.CAMERA"></uses-permission>

如果发布logcat我可以更精确

编辑：

logcat清楚地说明了问题

java.lang.IllegalArgumentException: uri cannot be null

您是否正确检查此语句是否返回非空值？

Uri  uri = data.getData();

Answer 2

根据日志，data.getData（）返回null。

在ACTION_IMAGE_CAPTURE Intent中提供EXTRA_OUTPUT，在这种情况下，您知道应该存储图像的位置，而不需要依赖getData（）

点击相机按钮，请使用以下代码：

  Intent intent = new Intent(
                        MediaStore.ACTION_IMAGE_CAPTURE);
                File f = new File(android.os.Environment
                        .getExternalStorageDirectory(), "temp.jpg");
                intent.putExtra(MediaStore.EXTRA_OUTPUT,
                        Uri.fromFile(f));

                 startActivityForResult(intent,
                        CAMERA_REQUEST_CODE);

参考：Android data.getData() returns null from CameraActivity for some phones

是什么原因导致我的resultCode返回-1

2 个答案: