Check to see if your device is Bluetooth 4. Combines the power of optical with the precision of laser for remarkable tracking on virtually any surface 1. Contact Hardware Support or call us: Microsoft Modern design Ultrathin and modern design complements your desktop. Bluetooth smart Clutter-free and reliable experience utilizing the latest in Bluetooth 4. If you also specify an expiration interval, it will be calculated from the scheduled push time, not from the time the push is submitted.
This means a push scheduled to be sent in a week with an expiration interval of a day will expire 8 days after the request is sent. If you choose to subclass com. Now that your app is all set up to receive push notifications, you can start customizing the display of these notifications. The Android style guide recommends apps use a push icon that is monochromatic and flat. If your push has a unique context associated with an image, such as the avatar of the user who sent a message, you can use a large push icon to call attention to the notification.
See the Android UI documentation for examples. To customize this behavior, you can override getActivity in your ParsePushBroadcastReceiver subclass. If there are multiple apps capable of opening the URI, a dialog will displayed for the user. The ParsePushBroadcastReceiver will manage your back stack and ensure that clicking back from the Activity handling URI will navigate the user back to the activity returned by getActivity.
All of the above methods may be subclassed to customize the way your application handles push notifications. When subclassing the methods onPushReceive , onPushOpen , onPushDismiss , or getNotification , consider delegating to super where appropriate.
This provides the most benefit from Parse Push and makes your code forward-compatible. The default implementation of onPushOpen will automatically track user engagement from pushes. If you choose not to use the ParsePushBroadcastReceiver or override the onPushOpen implementation, you may need to track your app open event manually. To do this, add the following to the onCreate method of the Activity or the onReceive method of the BroadcastReceiver which handles the com.
OPEN Intent:. To track push opens, you should always pass the Intent to trackAppOpened. Passing null to trackAppOpened will track only a standard app-opened event, not the push-opened event.
Please be sure to set up your application to save the Installation object. You can view the open rate for a specific push notification on your Parse Dashboard push console.
Our push open analytics graphs are rendered in real time, so you can easily verify that your application is sending the correct analytics events before your next release.
You can test by either message or send time. For each experiment group, you can specify a different push message. The remaining devices will be saved so that you can send the winning message to them later.
After you send the push, you can come back to the push console to see in real time which version resulted in more push opens, along with other metrics such as statistical confidence interval. Since we calculate open rate separately for each group based on recipient count, this should not significantly affect your experiment results.
NET v1. Before running experiments, you must instrument your app with push open tracking. For big push campaigns e. For smaller campaigns e. Using all devices for your test audience will not leave any remaining devices for the launch group, but you can still gain valuable insight into what type of messaging works better so you can implement similar messaging in your next push campaign. This confidence interval is in absolute percentage points of push open rate e. This confidence interval is a measure of how much difference you would expect to see between the two groups if you repeat the same experiment many times.
Just after a push send, when only a small number of users have opened their push notifications, the open rate difference you see between groups A and B could be due to random chance, so it might not be reproducible if you run the same experiment again.
After your experiment collects more data over time, we become increasingly confident that the observed difference is a true difference. As this happens, the confidence interval will become narrower, allowing us to more accurately estimate the true difference between groups A and B.
Setting up Push Notifications is often a source of frustration for developers. The process is complicated and invites problems to happen along the way. If you run into issues, try some of these troubleshooting tips. You can start by asking yourself the following questions:. The first step in debugging a push issue is to confirm that the push campaign is listed in your push logs.
If the push notification campaign is not showing up on that list, the issue is quite simple to resolve. Go back to your push notification sending code and make sure to check for any error responses. For example, you could log errors like so:.
We strongly encourage developers to turn off Client Push before releasing their app publicly unless your use case allows for any amount of arbitrary pushes to be sent by any of your users. You can read our security guide for more information. You have confirmed that the push notification is making it to your push logs. Now what? The next step is to verify if your push notification targeting is correct. The REST API is quite easy to use for this sort of purpose as you can easily recreate the push query using the information provided in your push notification logs.
If you type the above into a console, you should be able to see the first 1, objects that match your query. Note that constraints are always ANDed, so if you want to further reduce the search scope, you can add a constraint that matches the specific installation for your device:. If the above query returns no results, it is likely that your installation does not meet the targeting criteria for your campaign. What gives?
You can check the Push Delivery Report for the cause of failed deliveries: Mismatch Sender ID happens when the registered sender is not the same as the one currently sending the notifications, Not Registered is returned when the registration key is deemed invalid, either by misconfiguration or if the user have uninstalled the app.
If everything looks great so far, but push notifications are not showing up on your phone, there are a few more things you can check. If your app has been released for a while, it is expected that a percentage of your user base will have opted out of push notifications from your app or uninstalled your app from their device.
Parse does not automatically delete installation objects in either of these cases. When a push campaign is sent out, Parse will detect uninstalled installations and exclude them from the total count of push notifications sent. With that in mind, it is possible for the recipient estimate to be higher than the number of push notifications that is sent as reported by the push campaign status page.
ParseConfig is a way to configure your applications remotely by storing a single configuration object on Parse. After that you will be able to fetch the ParseConfig on the client, like in this example:. ParseConfig is built to be as robust and reliable as possible, even in the face of poor internet connections.
Caching is used by default to ensure that the latest successfully fetched config is always available.
In the below example we use getInBackground to retrieve the latest version of config from the server, and if the fetch fails we can simply fall back to the version that we successfully fetched before via getCurrentConfig. Every ParseConfig instance that you get is always immutable. When you retrieve a new ParseConfig in the future from the network, it will not modify any existing ParseConfig instance, but will instead create a new one and make it available via ParseConfig.
Therefore, you can safely pass around any ParseConfig object and safely assume that it will not automatically change. It might be troublesome to retrieve the config from the server every time you want to use it. You can avoid this by simply using the cached getCurrentConfig object and fetching the config only once in a while. ParseConfig supports most of the data types supported by ParseObject :. We currently allow up to parameters in your config and a total size of KB across all parameters.
Parse provides a number of hooks for you to get a glimpse into the ticking heart of your app. Our initial analytics hook allows you to track your application being launched. Further analytics are available around push notification delivery and open rates. Take a look at the Tracking Pushes and App Opens subsection of our Push Guide for more detailed information on handling notification payloads and push-related callbacks.
ParseAnalytics also allows you to track free-form events, with a handful of String keys and values. Say your app offers search functionality for apartment listings, and you want to track how often the feature is used, with some additional metadata. Note that Parse currently only stores the first eight dimension pairs per call to ParseAnalytics.
At the end of the day, users of your application will be interacting with Android UI components. We provide several UI widgets to make working with Parse data easier.
If you are using Parse to manage users in your mobile app, you are already familiar with the ParseUser class. At some point in your app, you might want to present a screen to log in your ParseUser. Parse provides an open-source ParseLoginUI library that does exactly this. This library contains an Android login activity that is ultra-customizable and easy to integrate with your app.
You can configure the look and feel of the login screens by either specifying XML configurations or constructing an Intent in code. In this guide, we first provide several ways to integrate with the login library. Then, we describe in detail how to customize the login screens. The login library integration is simple. ParseLoginActivity will guide the user through several screens to log in, sign up, or reset their password.
If the user resets their password by email, they are taken back to the login screen. The user will also see helpful toast messages if they provide invalid input e. Then, you can launch ParseLoginActivity from your own activity by calling:.
When ParseLoginActivity finishes, your caller activity will receive either:. This sample app is a simple profile viewer.
If you are not logged in, SampleProfileActivity prompts you to log in. Clicking on the login button in SampleProfileActivity launches the ParseLoginActivity , which prompts the user for login credentials. This basic integration case works well if your caller activity is designed to function regardless of whether there is a valid current user. For example, a restaurant reviews app may allow the user to browse restaurants even when the user is not logged in.
If the user does log in, the app could provide a more personalized experience on that same screen. If some parts or all of your app cannot function without a valid ParseUser , you can protect these parts of your app with a ParseLoginDispatchActivity supplied in this library project. This dispatch activity acts like a gatekeeper; it automatically launches ParseLoginActivity if no user is logged in, or launches the protected activity if a user is already logged in.
To use this, you subclass ParseLoginDispatchActivity and specify what protected activity to launch. The SampleProfileActivity in this app cannot function without a logged-in user, so it is protected by SampleDispatchActivity. The dispatch activity does not necessarily need to be the first activity at app launch. You can launch the dispatch activity from any activity. When your protected activity finishes, the dispatch activity will automatically forward the result code to your caller activity.
You might have a comment activity that requires a user. You can protect this activity behind a dispatch activity. The main restaurant listing activity supports either user or no user , can launch the dispatch activity when the user presses the comment button. If the user refuses to log in, they will be gracefully taken back to the restaurant listings activity.
In the restaurant listings activity, you can always call ParseUser. You need to explicitly set them to true for those components to show up on the screen. You specify the options on the builder, and then call build to generate an Intent that can be used to start the ParseLoginActivity.
The options in ParseLoginBuilder are the same as those in activity metadata customization. If you specify options in both code and activity metadata, the options in code take precedence. You can override any layout resources by having files with the same name as those in the ParseLoginUI library project. This is useful if you want to add a background image, or reposition the login components on the screen.
The top-level layout files are:. Adapter instead of using ParseQueryAdapter. Instead of using a basic ListAdapter backed by a static array of objects, our ParseQueryAdapter provides a layer of abstraction and allows you to easily display data from one of your Parse classes in your AdapterView of choice e.
ListView or GridView. When the AdapterView is attached to the window, your ParseQueryAdapter will automatically fetch the first set of data. This subclass simplifies the code that would otherwise be involved with:.
Consider the following code, which sets up a very simple ParseQueryAdapter to display data in a ListView. You can be up and running with a functional ListView full of data with very little configuration. This view will display a list of Instruments by name. Read on to see what you can do, and how to tweak a ParseQueryAdapter to fit all of your needs. All ParseObject s in that class are then fetched and displayed in order of their createdAt timestamps. To change this behavior, we drew from the functionality of an ArrayAdapter : but instead of taking in a vanilla array of objects to be displayed by the adapter, ParseQueryAdapter can also take a QueryFactory class which returns a ParseQuery you define.
Pass that into the constructor, and the adapter will then use that query to determine which objects to fetch and display. See below for an example setting up a ParseQueryAdapter to display only punk and metal bands with four or more members, ordered by number of records sold:. Similarly, if setImageKey String is used, its parameter will be used to determine the image displayed in the ImageView.
In this example, our item views are simply rows where the color is defined by the ParseObject :. ParseQueryAdapter makes it simple to display remote images. By calling setImageKey String , you can pass in a key name on your ParseObject which should contain a ParseFile containing an image to be fetched from Parse and loaded into the ParseImageView of the corresponding row.
The image will download asynchronously, and the appropriate ParseImageView will be updated in the background. As the user scrolls and rows are recycled by the adapter, images will be fetched as rows become visible and assigned ParseObject s.
You can define a placeholder image to be used when the image fetch has not yet completed. We expose two hooks in the data lifecycle of the Adapter for you to execute custom logic — right before we query Parse for your data and right after the fetched objects have been loaded from the query. These methods are particularly useful for toggling some loading UI. Pagination ensures that the table only gets one page of objects at a time. You can set the number of objects are in a page by calling setObjectsPerPage int.
The query is automatically altered to apply pagination, and a pagination row appears at the bottom of the AdapterView to allow users to load the next page. Pagination is turned on by default. To turn it off, call setPaginationEnabled false. With pagination turned off, the ParseQueryAdapter will use the default ParseQuery limit of items.
To disable this behavior perhaps to delay the fetching of data, or run some custom logic ahead of time , just call setAutoload false and call loadObjects manually if autoload is disabled.
Refer to the Data Types in Objects section of this guide to see platform-specific examples. Key names must contain only numbers, letters, and underscore, and must start with a letter. Values can be anything that can be JSON-encoded. This means that for the first object, it could have any types of fields you want. However, after a field has been set at least once, that field is locked into the particular type that was saved.
For example, if a User object is saved with field name of type String , that field will be restricted to the String type only the server will return an error if you try to save anything else. One special case is that any field can be set to null , no matter what type it is. The Data Browser is the web UI where you can update and create objects in each of your apps. Here, you can see the raw JSON values that are saved that represents each object in your class.
These are run whenever a value is changed or object is deleted from the Data Browser, just as they would be if the value was changed or deleted from your client code. It must adhere to the JSON standard. A file containing regular objects could look like:. Normally, when objects are saved to Parse, they are automatically assigned a unique identifier through the objectId field, as well as a createdAt field and updatedAt field which represent the time that the object was created and last modified in your Parse Server.
These fields can be manually set when data is imported from a JSON file. Please keep in mind the following:. In addition to the exposed fields, objects in the Parse User class can also have the bcryptPassword field set. Most OpenSSL based bcrypt implementations should have built-in methods to produce these strings. A file containing a User object could look like:.
The data export runs at a lower priority than production queries, so if your app is still serving queries, production traffic will always be given a higher priority, which may slow down the delivery of your data export.
Since data is stored internally as JSON, this allows us to ensure that the export closely matches how the data is saved to Parse. Other formats such as CSV cannot represent all of the data types supported by Parse without losing information. For offline analysis of your data, we highly recommend using alternate ways to access your data that do not require extracting the entire collection at once. For example, you can try exporting only the data that has changed since your last export.
Here are some ways of achieving this:. You can use date constraints to make sure the query only matches data that has been updated since you last ran this app. Your node app can write this data to disk for offline analysis. You can again use date constraints to make sure only newly updated data is extracted. If the above two options do not fit your needs, you can try using the Data Browser to export data selectively. Use the Funnel icon to create a filter for the specific data that you need to export, such as newly updated objects.
Once the filter has been applied, click on the Export data icon on the upper right of your Data Browser. This type of export will only include the objects that match your criteria. There are three kinds of relationships.
One-to-one relationships enable one object to be associated with another object. One-to-many relationships enable one object to have many related objects. Finally, many-to-many relationships enable complex relationships among many objects.
First, how many objects are involved in this relationship? In Parse, we can store this data in a single Game object. If the game becomes incredibly successful, each player will store thousands of Game objects in the system. For circumstances like this, where the number of relationships can be arbitrarily large, Pointers are the best option. Suppose in this game app, we want to make sure that every Game object is associated with a Parse User. We can implement this like so:.
We can obtain all of the Game objects created by a Parse User with a query:. And, if we want to find the Parse User who created a specific Game , that is a lookup on the createdBy key:.
Arrays are ideal when we know that the number of objects involved in our one-to-many relationship are going to be small. Arrays will also provide some productivity benefit via the includeKey parameter. However, the response time will be slower if the number of objects involved in the relationship turns out to be large. Suppose in our game, we enabled players to keep track of all the weapons their character has accumulated as they play, and there can only be a dozen or so weapons.
In this example, we know that the number of weapons is not going to be very large. We also want to enable the player to specify the order in which the weapons will appear on screen. Arrays are ideal here because the size of the array is going to be small and because we also want to preserve the order the user has set each time they play the game:. One trick we could employ is to use the includeKey or include in Android parameter whenever we use a Parse Query to also fetch the array of Weapon objects stored in the weaponsList column along with the Parse User object:.
For example, if we want to find all Parse User objects who also have a given Weapon , we can write a constraint for our query like this:. Suppose we had a book reading app and we wanted to model Book objects and Author objects.
As we know, a given author can write many books, and a given book can have multiple authors. This is a many-to-many relationship scenario where you have to choose between Arrays, Parse Relations, or creating your own Join Table. The decision point here is whether you want to attach any metadata to the relationship between two entities. In general, using arrays will lead to higher performance and require fewer queries. If either side of the many-to-many relationship could lead to an array with more than or so objects, then, for the same reason Pointers were better for one-to-many relationships, Parse Relation or Join Tables will be better alternatives.
Remember, this is information about the relationship , not about the objects on either side of the relationship. Some examples of metadata you may be interested in, which would necessitate a Join Table approach, include:. Using Parse Relations, we can create a relationship between a Book and a few Author objects. In the Data Browser, you can create a column on the Book object of type relation and name it authors.
Perhaps you even want to get a list of all the books to which an author contributed. You can create a slightly different kind of query to get the inverse of the relationship:. There may be certain cases where we want to know more about a relationship. This information could not be contained in a Parse Relation.
In order to keep track of this data, you must create a separate table in which the relationship is tracked. This table, which we will call Follow , would have a from column and a to column, each with a pointer to a Parse User. Alongside the relationship, you can also add a column with a Date object named date. Now, when you want to save the following relationship between two users, create a row in the Follow table, filling in the from , to , and date keys appropriately:. If we want to find all of the people we are following, we can execute a query on the Follow table:.
Arrays are used in Many-to-Many relationships in much the same way that they are for One-to-Many relationships. All objects on one side of the relationship will have an Array column containing several objects on the other side of the relationship.
Suppose we have a book reading app with Book and Author objects. The Book object will contain an Array of Author objects with a key named authors. We will put the Array in the Book object for this reason.
After all, an author could write more than books. Here is how we save a relationship between a Book and an Author. Because the author list is an Array, you should use the includeKey or include on Android parameter when fetching a Book so that Parse returns all the authors when it also returns the book:.
At that point, getting all the Author objects in a given Book is a pretty straightforward call:. Finally, suppose you have an Author and you want to find all the Book objects in which she appears. This is also a pretty straightforward query with an associated constraint:. In Parse, a one-to-one relationship is great for situations where you need to split one object into two objects.
These situations should be rare, but two examples include:. Thank you for reading this far. We apologize for the complexity. Modeling relationships in data is a hard subject, in general.
Many of the methods on ParseObject , including save , delete , and get will throw a ParseException on an invalid request, such as deleting or editing an object that no longer exists in the database, or when there is a network failure preventing communication with your Parse Server.
You will need to catch and deal with these exceptions. For more details, look at the Android API. This document explains the ways in which you can secure your apps. Continue reading for our suggestions for sensible defaults and precautions to take before releasing your app into the wild.
These are not secret and by themselves they do not secure an app. These keys are shipped as a part of your app, and anyone can decompile your app or proxy network traffic from their device to find your client key. This is why Parse has many other security features to help you secure your data. The client key is given out to your users, so anything that can be done with just the client key is doable by the general public, even malicious hackers.
The master key, on the other hand, is definitely a security mechanism. The overall philosophy is to limit the power of your clients using client keys , and to perform any sensitive actions requiring the master key in Cloud Code.
The second level of security is at the schema and data level. Enforcing security measures at this level will restrict how and when client applications can access and create data on Parse. When you first begin developing your Parse application, all of the defaults are set so that you can be a more productive developer.
How to Transfer file from phone to PC? How to replicate or backup phone by Xender? How can I set the file destination? Can I specify where the files should be stored? Cannot find what you are looking for? Copyright Anmobi. The text was updated successfully, but these errors were encountered:. Sorry, something went wrong. If I remove the android:theme in TextInputLayout , the exception is gone. EDIT: My problem was using vector drawables in android buttons. Not related to calligraphy.
I had the same bug, and cause by the attribute "BackgroundTint" in the Floating button view. I have got the same issue and I have resolved finally Opening the gradle. Same issue: Solved.
My image files were in the "drawable-v24" folder. I copied them to the "drawable" folder too. Problem solved. TBaulos , samk17cmutpm , UnselfconsciousLux : You are welcome. Also had the same ussue, I did what techview51 said and it worked. Interesting, appt2 shouldn't break this, we'll need to raise a bug report to see why it's doing it. I'm having the same issue. The same happens with "Calligraphy 3".
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