编辑:关于这个问题的讨论进行到另一个问题:Image capture with camera & upload to Firebase (Uri in onActivityResult() is null)请检查出来!我做了一些操作(遵循android文档),但仍然遇到同样的问题。上传图片(ACTION_IMAGE_CAPTURE)到Firebase存储
所以我在这里试图做一个简单的任务,用相机捕获图像并将其上传到Firebase上的存储数据库。我有以下按钮来完成这项工作:
b_capture.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(intent, CAMERA_REQUEST_CODE);
}
});
和上传下面的代码:
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if(requestCode == CAMERA_REQUEST_CODE && resultCode == RESULT_OK){
progressDialog.setMessage("Uploading...");
progressDialog.show();
Uri uri = data.getData();
StorageReference filepath = storage.child("Photos").child(uri.getLastPathSegment());
filepath.putFile(uri).addOnSuccessListener(new OnSuccessListener<UploadTask.TaskSnapshot>() {
@Override
public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) {
Toast.makeText(MainActivity.this, "Upload Successful!", Toast.LENGTH_SHORT).show();
progressDialog.dismiss();
}
}).addOnFailureListener(new OnFailureListener() {
@Override
public void onFailure(@NonNull Exception e) {
Toast.makeText(MainActivity.this, "Upload Failed!", Toast.LENGTH_SHORT).show();
}
});
}
}
在应用程序中我能拍照,但我确认照片后拍摄应用程序崩溃,并且我收到以下错误:
Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String android.net.Uri.getLastPathSegment()' on a null object reference
所以,我体会到了“开放的”不拥有任何东西,但我很困惑什么可以做。需要帮忙。
是的,我已经检查的所有权限,火力地堡连接,摇篮同步等
看到这个答案:http://stackoverflow.com/a/40567453/4815718 –
@qbix对不起,错误的问题(我以前的回答)。我已经看到了这个问题,就像它所说的那样 - 仍然行不通。下面的路径讨论现在进入另一个问题:http://stackoverflow.com/questions/40710599/image-capture-with-camera-upload-to-firebase-uri-in-onactivityresult-is-nul –
@qbix请检查问题:http://stackoverflow.com/questions/40710599/image-capture-with-camera-upload-to-firebase-uri-in-onactivityresult-is-nul我已经这样做了,它仍然会不为我工作。请帮忙! –