如何从Parse.com中删除整行并用新数据更新

Question

删除的代码

            DeleteDetails.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                final ParseObject Details = new ParseObject("Details");
                ParseUser user = ParseUser.getCurrentUser();
                Details.put("User", user);
                Details.remove("Age");
                Details.remove("Email_Address");
                Details.remove("Location");
                Details.remove("FullName");
                Details.saveInBackground();
            }
        });

我已经创建了上面的代码，它从Parse上的表中删除了数据，但它会自动创建一个新字段。我希望能够输入数据，删除它，然后再次输入。一旦用户退出应用程序并返回应用程序，数据就会从云中提取并显示在TextViews中。

TextView的代码

ParseQuery<ParseObject> requestAge = ParseQuery.getQuery("Details");
        requestAge.getFirstInBackground(new GetCallback<ParseObject>() {
            public void done(ParseObject reqDetails, ParseException e) {
                if (reqDetails != null) {
                    Log.d("reqDetails", "Got it");
                    //Retrieve Age
                    String gettheAge = reqDetails.getString("Age");
                    EditText displayAge = (EditText)findViewById(R.id.ageET);
                    displayAge.setText(gettheAge);
                    //Retrieve E-mail address
                    String gettheEmail = reqDetails.getString("Email_Address");
                    EditText displayEmail = (EditText)findViewById(R.id.EmailET);
                    displayEmail.setText(gettheEmail);
                    //Retrieve Location:
                    String gettheLocation = reqDetails.getString("Location");
                    EditText displayLocation = (EditText)findViewById(R.id.LocationET);
                    displayLocation.setText(gettheLocation);
                    //Retrieve Name:
                    String gettheName = reqDetails.getString("FullName");
                    EditText displayName = (EditText)findViewById(R.id.NameET);
                    displayName.setText(gettheName);
                    Toast.makeText(getApplicationContext(),
                            "Successfully Recieved Personal Details",
                            Toast.LENGTH_LONG).show();
                } else {
                    Log.d("reqAge", "Empty_query");

                    Toast.makeText(getApplicationContext(),
                            "Can't Get Details, Check Connection", Toast.LENGTH_LONG)
                            .show();
                }
            }
        });

Answer 1

如果您想在Parse中删除一个对象，只需对要删除的对象调用deleteInBackground方法即可。

Android分析文档

Answer 2

这是一个关于如何通过ID删除特定行的示例：

//"Status" is the tableName in parse.com
ParseQuery<ParseObject> query = new ParseQuery<ParseObject>("Status");
//"objectId" the column name in parse.com
//objectID is the content ID in the table objectId
query.whereEqualTo("objectId", objectID);
query.getFirstInBackground(new GetCallback<ParseObject>() {
@Override
public void done(ParseObject status, ParseException e) {
   try {
         status.delete();
         status.saveInBackground();
       }catch(ParseException ex){
         ex.printStackTrace();
       }
       }
 });

跳这个有助于好运。