how to delete image from storage ?

[jiharal]

how to delete image from storage ?

[sprmn]

You can find more on that subject here.

The onUploadSuccess function will be called with the filename of the uploaded file. Together with the storageRef you can obtain a reference to the file: storageRef.child(filename). Calling delete() on this wille delete the image from storage, if permissions are setup correctly.

You could do that for example in the onUploadStart function:

...
onUploadStart={() => {
  storageRef.child(this.state.filename).delete(); // do not forget to catch errors
  this.setState({ progress: 0 });
}}
...