Question

嘿伙计我在解析中删除对象时遇到了一些麻烦，我的应用程序基本上是允许用户登录然后添加，删除和选择课程。但是我目前的问题是每次点击＆＃34;删除按钮＆＃34;它总是提出祝酒词＃34;没有发现任何课程＆＃34;我已设置为在对象不存在时显示。但是我确保它确实存在于我的解析数据库中。

这是我的解析表：http://gyazo.com/028cd4816eea96dd9364fc4fbc9fdf76

当按下OnClick侦听器以执行删除按钮时，这是我的代码：

//set onclick listener for delete button
    deleteCourse.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View arg0) {
            LayoutInflater li = LayoutInflater.from(context);
            View deletePromptsView = li.inflate(R.layout.delete_prompt, null);

            AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(context);

            //set the Alert Dialog builder to the delete prompt layout file
            alertDialogBuilder.setView(deletePromptsView);

            final EditText deleteUserInput = (EditText) findViewById(R.id.editDeleteTextUserInput);

            //set the dialog message
            alertDialogBuilder.setCancelable(false).setPositiveButton("Delete", new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int id) {

                    //get the user input and send it to parse to delete the object from the table
                    ParseQuery<ParseObject> query = ParseQuery.getQuery("Course");
                    //query.whereEqualTo("name", deleteUserInput.getText().toString());
                    query.getInBackground("name",new GetCallback<ParseObject>() {
                        @Override
                        public void done(ParseObject object, ParseException e) {
                            if (object == null){
                                Toast.makeText(getApplicationContext(),"No Course Was Found",Toast.LENGTH_LONG).show();
                            } else{
                                object.remove(deleteUserInput.getText().toString());
                                object.deleteInBackground();
                            }
                        }
                    });

                }
            }).setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int which) {
                    dialog.cancel();
                }
            });

            //Create the alert dialog
            AlertDialog alertDialog = alertDialogBuilder.create();

            //show the alert dialog
            alertDialog.show();

        }
    });
}

Answer 1

尝试使用此代码，它可以正常使用

UICollectionViewLayout.CreateForCell<CustomLayoutAttributes>(indexPath);

使用Parse删除对象 - Android

1 个答案: