memento | Activity instances will get | Android library

 by   mttkay Java Version: 0.2 License: Apache-2.0

kandi X-RAY | memento Summary

kandi X-RAY | memento Summary

memento is a Java library typically used in Mobile, Android applications. memento has no bugs, it has no vulnerabilities, it has build file available, it has a Permissive License and it has high support. You can download it from GitHub, Maven.

On Android, Activity instances will get destroyed by the runtime whenever configuration changes occur such as a change in screen orientation. Since this will cause the activity to go through an onDestroy/onCreate cycle, all instance state is lost. This is especially troublesome when one needs to retain concurrent objects, such as running AsyncTasks. Without retaining their state when the activity gets destroyed, results will be lost unless cached and redelivered to the activity. In earlier days, one was to use the onRetainNonConfigurationInstance callback, which is not type-safe, is cumbersome to use, and is today deprecated in favour of using fragments that setRetainInstance(true). While introducing fragments helps retaining state on a per-fragment basis, shared data that is to be delivered to any number of embedded fragments must be duplicated in each of them, or manually shifted to a shared background fragment. Memento solves all these issues in an elegant, simple, and type-safe way by generating companion fragments for your activities that retain shared state.
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            kandi-support Support

              memento has a highly active ecosystem.
              It has 205 star(s) with 18 fork(s). There are 12 watchers for this library.
              OutlinedDot
              It had no major release in the last 12 months.
              There are 2 open issues and 7 have been closed. On average issues are closed in 11 days. There are no pull requests.
              OutlinedDot
              It has a negative sentiment in the developer community.
              The latest version of memento is 0.2

            kandi-Quality Quality

              memento has 0 bugs and 25 code smells.

            kandi-Security Security

              memento has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
              memento code analysis shows 0 unresolved vulnerabilities.
              There are 0 security hotspots that need review.

            kandi-License License

              memento is licensed under the Apache-2.0 License. This license is Permissive.
              Permissive licenses have the least restrictions, and you can use them in most projects.

            kandi-Reuse Reuse

              memento releases are not available. You will need to build from source code and install.
              Deployable package is available in Maven.
              Build file is available. You can build the component from source.
              Installation instructions, examples and code snippets are available.
              memento saves you 375 person hours of effort in developing the same functionality from scratch.
              It has 894 lines of code, 56 functions and 16 files.
              It has low code complexity. Code complexity directly impacts maintainability of the code.

            Top functions reviewed by kandi - BETA

            kandi has reviewed memento and discovered the below as its top functions. This is intended to give you an instant insight into memento implemented functionality, and help decide if they suit your requirements.
            • Generate Memento
            • Generate the Memento class
            • Emit a writer method
            • Emit reader method
            • Retain the native version of the given activity
            • Retain the native fragments mode of the given activity
            • Instantiates the MementoMethod
            • Returns a memento for the given activity
            Get all kandi verified functions for this library.

            memento Key Features

            No Key Features are available at this moment for memento.

            memento Examples and Code Snippets

            Explanation
            Javadot img1Lines of Code : 106dot img1no licencesLicense : No License
            copy iconCopy
            public enum StarType {
              SUN("sun"),
              RED_GIANT("red giant"),
              WHITE_DWARF("white dwarf"),
              SUPERNOVA("supernova"),
              DEAD("dead star");
              ...
            }
            
            
            public interface StarMemento {
            }
            
            public class Star {
            
              private StarType type;
              private int ageYea  
            Sets the Memento to this object .
            javadot img2Lines of Code : 6dot img2License : Non-SPDX
            copy iconCopy
            void setMemento(StarMemento memento) {
                var state = (StarMementoInternal) memento;
                this.type = state.getType();
                this.ageYears = state.getAgeYears();
                this.massTons = state.getMassTons();
              }  

            Community Discussions

            QUESTION

            How to remove the arrows icons from a Material UI TextField
            Asked 2021-May-14 at 13:45

            I need to remove the right icons that are the up and down arrows from a Material UI TextField that I modified from the Material UI documentations (https://material-ui.com/components/autocomplete/#autocomplete) Highlights section.

            I tried some solutions from stack overflow like (Remove the arrow and cross that appears for TextField type=“time” material-ui React) and (Remove the arrow and cross that appears for TextField type=“time” material-ui React) but they didn't work and, I ended up with the following code:

            App.js:

            ...

            ANSWER

            Answered 2021-May-14 at 13:22

            According to this document you need to add freesolo

            Source https://stackoverflow.com/questions/67534892

            QUESTION

            Material UI Autocomplete not working using modified TextField
            Asked 2021-May-14 at 01:59

            I need to modify the Autocomplete Highlight provided as an example to fit my needs. (https://material-ui.com/components/autocomplete/#autocomplete)

            The Highlight example provided has borders so I used the solution from this link (how to remove border in textfield fieldset in material ui) to modify my TextField and remove it's border and it works except that when I type in the search input I don't get the autocomplete suggestions.

            I also replaced the Icon, and ended up with the following code:

            ...

            ANSWER

            Answered 2021-May-14 at 01:59

            In order for autocomplete to work , you also need to pass on the InputProps down to custom textfield. So I would change your renderInput function like this:

            Source https://stackoverflow.com/questions/67527742

            QUESTION

            design pattern for undoing after I have commited the changes
            Asked 2021-Mar-22 at 09:19

            We can undo an action using Command or Memento pattern.

            If we are using kafka then we can replay the stream in reverse order to go back to the previous state.

            For example, Google docs/sheet etc. also has version history.

            in case of pcpartpicker, it looks like the following:

            For being safe, I want to commit everything but want to go back to the previous state if needed.

            I know we can disable auto-commit and use Transaction Control Language (COMMIT, ROLLBACK, SAVEPOINT). But I am talking about undoing even after I have commited the change.

            How can I do That?

            ...

            ANSWER

            Answered 2021-Mar-22 at 09:19

            There isn't a real generic answer to this question. It all depends on the structure of your database, span of the transactions across entities, distributed transactions, how much time/transactions are allowed to pass before your can revert the change, etc.

            Memento like pattern

            Memento Pattern is one of the possible approaches, however it needs to be modified due to the nature of the relational databases as follows:

            1. You need to have transaction log table/list that will hold the information of the entities and attributes (tables and columns) that ware affected by the transaction with their primary key, the old and new values (values before the transaction had occurred, and values after the transaction) as well as datetimestamp. This is same with the command (memento) pattern.
            2. Next you need a mechanism to identify the non-explicit updates that ware triggered by the stored procedures in the database as a consequence of the transaction. This is important, since a change in a table can trigger changes in other tables which ware not explicitly captured by the command.
            3. Mechanism for rollback will need to determine if the transaction is eligible for roll-back by building a list of subsequent transactions on the same entities and determine if this transaction is eligible for roll-back, or some subsequent transaction would need to be rolled-back as well before this transaction can be rolled-back.
            4. In case of a roll-back is allowed after longer period of time, or a near-realtime consumption of the data, there should also be a list of transaction observers, processes that need to be informed that the transaction is no longer valid since they already read the new data and took a decision based on it. Example would be a process generating a cumulative report. When transaction is rolled-back, the rollback will invalidate the report, so the report needs to be generated again.

            For a short term roll-back, mainly used for distributed transactions, you can check the Microservices Saga Pattern, and use it as a starting point to build your solution.

            History tables

            Another approach is to keep incremental updates or also known as history tables. Where each update of the row will be an insert in the history table with new version. Similar to previous case, you need to decide how far back you can go in the history when you try to rollback the committed transaction.

            Regulation issues

            Finally, when you work with business data such as invoice, inventory, etc. you also need to check what are the regulations related with the cancelation of committed transactions. As example, in the accounting systems, it's not allowed to delete data, rather a new row with the compensation is added (ex. removing product from shipment list will not delete the product, but add a row with -quantity to cancel the effect of the original row and keep audit track of the change at the same time.

            Source https://stackoverflow.com/questions/66740216

            QUESTION

            how to create a value in a column if the rows of the column have no spaces, and want to be spaced based on the value of the main column
            Asked 2021-Feb-22 at 06:15

            I have a dataframe with no spaces in the column like this:

            for example

            ...

            ANSWER

            Answered 2021-Feb-22 at 06:06

            Since you haven't given any code on what you have tried, I will give a way to get you started with solving this problem: Remove spaces from the actual title and use that to find the title in the dataframe you want to fix (use a df.merge to join between two dfs and merge on the title without the space)

            Source https://stackoverflow.com/questions/66310710

            QUESTION

            Need to make two buttons align a few pixels left and right of the center
            Asked 2021-Jan-27 at 03:35

            Need to make two buttons align a few pixels left and right of the centre I need div left to be 1px to the left of the centre. And right to be 1px right of it.

            Any ideas how?

            ...

            ANSWER

            Answered 2021-Jan-27 at 03:14

            QUESTION

            feed.Entry undefined (type Feed has no field or method Entry)
            Asked 2021-Jan-10 at 16:57

            I need a little help with my code. I'm Kinda new at "go" but having a hard time resolving this getting this error message "(type Feed has no field or method Entry)" I have multiple func doing different things, and I need to create a few structs, but I'm running into this issue. maybe my "fmt.printf" statement is not correct, just need a second pair of eyes here. I'm trying to use IBM API if anyone wants to know.

            ...

            ANSWER

            Answered 2021-Jan-10 at 16:57

            feed is of type Feed (var feed Feed). type Feed is defined as:

            Source https://stackoverflow.com/questions/65651358

            QUESTION

            Make mui autocomplete persist the input value after selection
            Asked 2020-Sep-18 at 16:51

            After typing a value and selecting an option in Material-UI Autocomplete with Multiple, the entered value is cleared.

            Is there a way to make AutoComplete persist the typed value even after selection? Like the one bellow...

            Demo: https://codesandbox.io/s/material-demo-forked-cv1f5

            ...

            ANSWER

            Answered 2020-Sep-18 at 16:49

            You can use a controlled approach for the input value using the inputValue and onInputChange props. This allows you to control the input value at all times. Material-UI will call onInputChange when it thinks the value should change, and Material-UI passes a reason of "input", "reset", or "clear" (see onInputChange in the props documentation). You want to ignore the "reset" changes.

            Here's a modified version of your sandbox:

            Source https://stackoverflow.com/questions/63959198

            QUESTION

            Scoping of keys in vscode extension global scope
            Asked 2020-Jun-12 at 10:00

            The context of a vscode extension provides access to globalState which is a Memento object with key/value pairs. My question is: does each extension get its own memento object, or is there one shared by all extensions? Just wondering whether I need to make my keys more specific (e.g., my.extension.foo), or if I can keep the keys simple (e.g., foo).

            ...

            ANSWER

            Answered 2020-Jun-12 at 10:00

            It's scoped to your extension, so you can keep them simple:

            However, when an extension uses storage, it will always get it's data stored under 1 key (the extension name + extension ID). We never allow to write directly into storage under a key that could conflict with other keys.

            (source)

            Source https://stackoverflow.com/questions/62341372

            QUESTION

            RxJS: Have Observables only emit values after the previous Observable has completed
            Asked 2020-Jun-08 at 16:49

            I am currently trying to implement an Angular structural directive, that will read & store the text-content of an HTML element (and all of its children), remove its contents on AfterViewInit, and re-add the content with a delay, one character at a time, giving it the appearance of being typed in real-time.

            I do this by analyzing the target node's NodeType. If it's text, it will back up the data content into an array and proceed with the next element. If it's a different node, it'll analyze that node recursively as well. This way, I can also modify the text that is contained within another HTMLElement of the target element.

            To write the text back to the nodes, I am using Observables. Every node's original values gets emitted one character at a time, with a delay of 60ms between each character, re-adding it to the original node's content to simulate keyboard-input-delay. In my anaylze method, I am also collecting the length of the previous node's content, delaying the Observable by that number * 60ms. My intention was to have the next Observable emit its values only after the previous one has finished.

            However (probably due to the asynchronous nature of Observables) often one Observable will start emitting values before the previous one has fully completed. This gives the page sometimes the appearance as if there was more than one line being added at a time, a behaviour I am trying to avoid.

            This is what my Observables look like:

            ...

            ANSWER

            Answered 2020-Jun-08 at 13:04

            Calculating delay with n * 60 gives you exact number but if simulate the same delay with n setTimeout()s it won't match because setTimeout() doesn't guarantee exact timeout.

            So instead you can remove the nested Observable and make one chain that using concatMap will first take each memento and then each character.

            Source https://stackoverflow.com/questions/62261950

            QUESTION

            Unable to select view/ menu item using withId method in UI testing options menu using Espresso
            Asked 2020-Apr-22 at 15:04

            I am working on an Android Kotlin project. I am adding UI tests written using the Espresso framework into my project. But in my tests, I cannot select the menu item of the options menu within the action bar using withId() method.

            Following is how I added the menu into the action bar in the activity.

            ...

            ANSWER

            Answered 2020-Apr-07 at 02:26

            You cannot use withId when selecting menu items because the menu is inflated with their own views and ids, and so your id action_logout will never exist in the view hierarchy (NoMatchingViewException):

            Try a different view matcher instead, use withText for example:

            Source https://stackoverflow.com/questions/61036163

            Community Discussions, Code Snippets contain sources that include Stack Exchange Network

            Vulnerabilities

            No vulnerabilities reported

            Install memento

            Memento is published as a Maven artifact. If you're using Android Studio, add the following config to your build.gradle:.

            Support

            For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .
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            https://github.com/mttkay/memento.git

          • CLI

            gh repo clone mttkay/memento

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            git@github.com:mttkay/memento.git

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