Android Java How To Stop Activity From Opening Twice Programatically

The NativeScript Metadata is the mapping between the JavaScript and the Android world. Besides a full list with all the available classes and methods, the metadata contains the JNI signature for each accessible Android method/field. It is pre-generated, in a binary format, and embedded in the application package , storing the minimal required information thus providing small size and highly efficient read access. The generation process uses bytecode reading to parse all publicly available types in the Android libraries supplied to the NativeScript project. The generator works as part of the Android build process, meaning that no user interaction is required for it to work.

Fragments can be used to respond to user input, varying form factors and other issues, such as, the orientation of the device. In portrait mode an app may show itself in a different manner to say landscape. The FragmentManager is responsible for adding, replacing, removing fragments dynamically. In this lecture, we will use the case study of the Fragment App to best understand how code can build dynamic layouts and respond to these types of events. This is the "top-level" fragment, showing a list of items that the user can pick. Upon picking an item, it takes care of displaying the data to the user as appropriate based on the current UI layout.

Displays a list of items that are managed by an adapter similar to ListActivity. It provides several methods for managing a list view, such as the onListItemClick() callback to handle click events. The fragment uses a helper function to show details of a selected item. This includes configuration of INDEXED_EXTRACTIONS and any other parsing, filtering, anonymizing, and routing rules. Performing these actions on the instance that indexes the data will have no effect, as the forwarded data must arrive at the indexer already parsed.

Being two different worlds, Java/Kotlin and JavaScript use different data types. For example java.lang.String is not the same as the JavaScript's String. The NativeScript Runtime provides implicit type conversion that projects types and values from JavaScript to Java and vice-versa. To create a deep link to your app's content you first have to create an intent filter. An intent filter specifies the types of intents the activity would like to receive.

The 'Back' button has many different uses in many different android apps. While some app developers use it to close their apps, some use it to traverse back to the app's previous activity. Many apps require the user to press the 'Back' button two times within an interval to successfully close the application, which is considered the best practice.

So it is a good practice to exit from an app with a double click of the back button. As some time user can press the back button by mistake. So, to ensure that, whether the user really wants to exit from the app we implement this feature. To forward this data to another Splunk instance, edit inputs.conf and props.conf on the forwarding instance, and props.conf on the receiving instance.

For information on how to set source types when importing structured data files, see The "Set source type" page. Pearson automatically collects log data to help ensure the delivery, availability and security of this site. Represents a thin wrapper over a class or an interface and provides access to its methods and fields. From a JavaScript perspective this type of proxy may be considered as a constructor function. What happens when an application is built with higher API level(e.g. 23), but runs on a device with a lower API level(e.g. 20)?

PropertyTypeDescriptiongetDownloadUrlStringA URL that can be used to download the object. This is a public unguessable URL that can be shared with other clients. After the upload completes, this is the metadata returned by the server.getTaskUploadTaskThe task that created this snapshot.

This metadata contains typical file metadata properties such as name, size, and contentType . The putFile() method automatically infers the MIME type from the File extension, but you can override the auto-detected type by specifying contentType in the metadata. If you do not provide a contentType and Cloud Storage cannot infer a default from the file extension, Cloud Storage usesapplication/octet-stream. See the Use File Metadatasection for more information about file metadata.

We'll have to modify the createNotification method we defined earlier. We need to create another PendingIntent that'll start the activity that'll be shown on the lock screen. It's also important to add a category such as ALARM or CALL for increasing the chances of it appearing on the lock screen. As the logic in the activity depends on the scenario (single/multi pane), you typically write a check to determine in which mode you are. One way is to define a configuration file in the values resource folder. The key / value pair defaults to false and a additional configuration file set this value to true for the desired screensize.

In theonCreateView()method the fragment creates its user interface. Here you can inflate a layout via theinflate()method call of theInflatorobject passed as a parameter to this method. Use one activity, which displays two fragments for tablets and on handset devices. In this case change at runtime the fragments displayed by the activity whenever necessary. In this scenario you typically define instances of the FrameLayout class as placeholder in your layout and add the fragments at runtime to them.

This feature is mostly used in all over android apps at present time because this feature gives us the ability to re program the android back button so you can define certain task upon it. So here is the complete step by step tutorial for Clicking twice the back button to exit activity in android. In this launch mode a new task will always be created and a new instance will be pushed to the task as the root one.

If an instance of activity exists on the separate task, a new instance will not be created and Android system routes the intent information through onNewIntent() method. It creates a new instance of an activity in the task from which it was started. Multiple instances of the activity can be created and multiple instances can be added to the same or different tasks.

In other words you can create the same activity multiple times in the same task as well as in different tasks. A task is a collection of activities that users interact with when performing a certain job. In general an application contains number of activities.

Normally when user launch an application a new task will be created and the first activity instance is called root of the task. This post has shown you examples about how to close the fragment by a close button in android and also how to disable coming back to activity android studio. On the receiving instance, use the Search app to confirm that the fields have been extracted from the structured data files and properly indexed. Before Splunk software displays fields in Splunk Web, it must first extract those fields by performing a search time field extraction. By default, the limit for the number of fields that can be extracted automatically at search time is 100.

While Splunk software has indexed all of the fields correctly, this anomaly occurs because of a configuration setting for how Splunk software extracts the fields at search time. By default NativeScript includes all supported entities in the metadata. This allows app and plugin authors to freely call any native API from JavaScript. While it is benefitial during development, in some cases having metadata for all the APIs is undesirable. This means that you can't access a JavaScript value/object from both threads. You can only serialize the object, send it to the other thread and deserialize it there.

This is what postMessage() function is responsible for. You can access a native object from more than one thread, without copying it, because the runtime will create a separate JavaScript wrapper object for each thread. Keep in mind that when you are using non-thread-safe native APIs and data you have to handle the synchronization part on your own.

The runtime doesn't perform any locking or synchronization logic on native data access and API calls. Onerror - handle uncaught errors occurring during execution of functions inside the Worker Scope . If the handler returns a true-like value, the message will not propagate to the Worker instance's onerror handler on the main thread. After onerror is called the worker thread, execution is not terminated and the worker is still capable of sending/receiving messages. Once the changes are made to the FragmentTransaction, commit() is called for the changes to take effect. The fragment saves its current dynamic state, so it can later be reconstructed in a new instance of its process is restarted.

If a new instance of the fragment later needs to be created, the data you place in the Bundle here will be available in the Bundle given to onCreate, onCreateView, and onActivityCreated. In the code the new fragment restores the state in onActivityCreated(). In portrait mode the application will replace the existing titles fragment with the details fragment if the user taps on one of the names in the list view . We will come back to discuss how this is done in the code in a moment. Essentially there are two activities and two different fragments used to implement this when the code runs in portrait mode; these activities are FragmentLayout and DetailsActivity. This article helps every android application development company like us Moon Technolabs.

IPhone app development improves requirements but android app development competes with clients' requirements in a short time. Here described issues are going to be more helpful for my developers. Very helpful and informative post to understand the development things which should consider during android application development. Most of the android app developers make mistakes during programming and not using the fragment is common in all. Thanks to updating to us with helpful things to keep in mind we will implement in our recent project. This is very special launch mode and only used in the applications that has only one activity.

It is similar to singleTask except that no other activities will be created in the same task. Any other activity started from here will create in a new task. If an instance is not present on top of task then new instance will be created. To use Splunk Web, follow the instructions in Use Splunk Web to extract fields from structured data files earlier in this topic. Specify the structured data file that you want the software to monitor. It sets the source type of the data based on its interpretation of that data.

For example, if you upload a CSV file, it sets the source type to csv. Core Foundation has the concept of Toll-free bridged types - data types which can be used interchangeably with their Objective-C counterparts. When dealing with a toll-free bridged type NativeScript always treats it as its Objective-C counterpart. Core Foundation objects on the toll-free bridged types list are exposed as if they were instances of the equivalent Objective-C class. This means that a CFDictionaryRef value in JavaScript has the same methods on its prototype as if it were a NSDictionary object.

The source code of application.android.ts is bundled separately as application.js file which is loaded from the native Application.java class on launch. The screen shows a product with an image, name, brand and price. Since everybody loves promotions you're going to use deep links to add functionality to apply discounts to the product. In addition to that you can use the setRetainState method call on the fragment.

This retains the fragment instances between configuration changes. It only works if the fragments are not added to the backstack. The FragmentManager class allows you to add, remove and replace fragments in the layout of your activity. It can accessed in an activity via the getFragmentManager() method. Activity and fragment instance have been created as well as the view hierarchy of the activity.

At this point, view can be accessed with thefindViewById()method. After you enable Safe Args, the plugin generates code that contains classes and methods for each action you've defined. For each action, Safe Args also generates a class for each originating destination, which is the destination from which the action originates. The generated class name is a combination of the originating destination class name and the word "Directions". For example, if the destination is named SpecifyAmountFragment, the generated class is named SpecifyAmountFragmentDirections.

The generated class contains a static method for each action defined in the originating destination. This method takes any defined action parameters as arguments and returns a NavDirectionsobject that you can pass to navigate(). The fragment lifecycle ensures that onCreateView() to build the layout for the fragment.

It builds the fragment with a textview -- text.setText(Shakespeare.DIALOGUE[getShownIndex()]) -- and attaches it to a scroller and returns the view which is drawn. The end of this thread is the drawing of the details fragment by the new activity as shown below. Assume in the path through the onCreate() for the activity that its the first time through the application/activity running. We first create a new fragment , set the index for the item selected and the we use the programmatic approach to adding the fragment. But, if you are starting fresh and trying to create a beautiful experience for your users, do consider eliminating the past.

Sharing content, taking pictures, recording video, picking contacts, adding events, opening links with native apps, etc. The java.lang.Thread.run() method is called if this thread was constructed using a separate Runnable run object, else this method does nothing and returns. This configuration indexes all extracted fields from the splunk_resource_usage source type that begin with the string data..

This is the format for a source-type-scoped custom indexed field configuration. It uses a wildcard expression to target a set of fields that have been extracted from structured data. Then the method returns this combined View, with the ViewGroup as the root. When attachToRoot is false, the layout file from the first parameter is inflated and returned as a View.

The root of the returned View would simply be the root specified in the layout file. In either case, the ViewGroup's LayoutParams are needed to correctly size and position the View created from the layout file. To have access and Intellisense for the native APIs with NativeScript + TypeScript or NativeScript + Angular projects, you have to add a dev dependency to @nativescript/types. More details about accessing native APIs with TypeScript can be found (#intellisense-and-access-to-native-apis-via-typescript). One of NativeScript's strongest capabilities is the access to Android (also referred to as 'Java/Kotlin' or 'native') APIs inside JavaScript/TypeScript. First, copy in the SmartFragmentStatePagerAdapter.java which provides the intelligent caching of registered fragments within our ViewPager.