Here we see, that package name for twitter is com.twitter.android. Let's see the code, that will go through all installed apps on the device and check if given packages are avaliable. For further usage, we'll write it in a way, that it returns list of matching ResolveInfo objects. In the loadApps method of theAppsListActivity class, we use the queryIntentActivitiesmethod of thePackageManager class to fetch all theIntents that have a category ofIntent.CATEGORY_LAUNCHER. The query returns a list of the applications that can be launched by a launcher.
We loop through the results of the query and add each item to a list named apps. Take a look at the following code snippet for clarification. Every time an app fires an intent, the Android system will search for one or more components that can handle this intent, by examining each app's Manifest for intent filters. An intent filter specifies the type of intent that a component can handle, so if the Android system finds a match then it'll launch the intent filter's corresponding component. If a device has multiple apps that are capable of handling an intent, then the system will present a dialog box to the user, and they can choose which application they want to use. The Android system automatically routes a broadcast to all the applications that are setup to receive that broadcast's particular type of intent.
By implementing one or more BroadcastReceivers, your app can respond to events that are happening outside of the application context. For example, imagine your app occasionally needs to perform a battery-intensive task; you can provide a better user experience by delaying this task until the device is charging. PackageManager.ActivityInfo Information you can retrieve about a particular application activity or receiver.
PackageManager.ApplicationInfo Information you can retrieve about a particular application. PackageManager.InstrumentationInfo Information you can retrieve about a particular piece of test instrumentation. PackageManager.NameNotFoundException This exception is thrown when a given package, application, or component name can not be found. PackageManager.PackageInfo Overall information about the contents of a package.
PackageManager.PermissionInfo Information you can retrieve about a particular security permission known to the system. PackageManager.ResolveInfo Information that is returned from resolving an intent against an IntentFilter. PackageManager.ServiceInfo Information you can retrieve about a particular application service.
Convert this Intent into a String holding a URI representation of it. The returned URI string has been properly URI encoded, so it can be used with Uri.parse. The URI contains the Intent's data as the base URI, with an additional fragment describing the action, categories, type, flags, package, component, and extras. A List of PackageInfo objects, one for each package that is installed on the device. In the unlikely case of there being no installed packages, an empty list is returned. If flag GET_UNINSTALLED_PACKAGES is set, a list of all applications including those deleted with DONT_DELETE_DATA will be returned.
Return a List of all application packages that are installed on the device. If flag GET_UNINSTALLED_PACKAGES has been set, a list of all applications including those deleted with DONT_DELETE_DATA will be returned. Finally, create a third XML file in the same location and name itlist_item.xml.
Each list view item represents an application installed on the user's device. It shows the application's icon, label, and package name. We display the application icon using anImageViewinstance andTextView instances for the label and package name. If set, this intent will not match any components in packages that are currently stopped. If this is not set, then the default behavior is to include such applications in the result.
Set if the activity should be an option for the default action to perform on a piece of data. Setting this will hide from the user any activities without it set when performing an action on some data. Note that this is normally -not- set in the Intent when initiating an action -- it is for use in intent filters specified in packages. Component The full component name (i.e. com.google.apps.media/com.google.apps.media.BackgroundPlayback) of a Service class. Use any combination of GET_META_DATA, GET_SHARED_LIBRARY_FILES, to modify the data returned.
You can use the Manifest merge feature to reduce the need to include any SDK requirements in your application's manifest file. You'll need to add either the Fine or Coarse location permission if you plan to display a user's location on the map or get the user's location information. The user location permission should also be checked during runtime using the PermissionsManager. An example of where this may be used is with things like CATEGORY_APP_BROWSER.
This category allows you to build an Intent that will launch the Browser application. However, the correct main entry point of an application is actually ACTION_MAIN CATEGORY_LAUNCHER with setComponent(android.content.ComponentName)used to specify the actual Activity to launch. If you launch the browser with something different, undesired behavior may happen if the user has previously or later launches it the normal way, since they do not match. Instead, you can build an Intent with the MAIN action and set a selector with ACTION_MAIN and CATEGORY_APP_BROWSER to point it specifically to the browser activity.
If left with the default value of null, the system will determine the appropriate class to use based on the other fields in the Intent. If this class is defined, the specified class will always be used regardless of the other fields. Component The full component name (i.e. com.google.apps.calendar/com.google.apps.calendar.CalendarAlarm) of a Receiver class. A List of ApplicationInfo objects, one for each application that is installed on the device. In the unlikely case of there being no installed applications, an empty list is returned.
PackageName The full name (i.e. com.google.apps.contacts) of an application. Use any combination of GET_META_DATA, GET_SHARED_LIBRARY_FILES, GET_UNINSTALLED_PACKAGES to modify the data returned. Component The full component name (i.e. com.google.apps.contacts/com.google.apps.contacts.ContactsList) of an Activity class. Content providers allow you to store data in any persistent storage location that your application can access, such as the file system or a SQLite database. This component also provides a consistent approach to sharing data with other applications, and defines mechanisms for data security. In this tutorial we would going to create an android application which would display us all the only externally installed applications on our android mobile phone device.
The application display into custom ListView and show us App icon, app name and app package name on screen. This application is designed into RecyclerView along with CardView. So here is the complete step by step tutorial for Android Get List of Installed Apps Package Name With Icons Programmatically. Above code will show standard share dialog allowing user to pick the appropriate app. What if you need to filter out the apps or share to a distinct application (that e.g. don't have the SDK like Facebookor Twitter)?
Let's say we'd like to check if a given application is installed. Having in mind, that Android has a very strict rule, that package name can't be changed for the application, makes it possible to map the application in question to the package. To find the package name for the app, it's enough to search for it in Google Play on your browser. If the ID is set to null or not set at all, it returns the package information of the current application. The list of installed packages and their package IDs is obtained using getPackagesInfo(). Caller The class name of the activity that is making the request.
Specifics An array of Intents that should be resolved to the first specific results. The most important is MATCH_DEFAULT_ONLY, to limit the resolution to only those activities that support the DEFAULT_CATEGORY. If set, this intent will always match any components in packages that are currently stopped. This is the default behavior when FLAG_EXCLUDE_STOPPED_PACKAGES is not set. By default a document created by FLAG_ACTIVITY_NEW_DOCUMENT will have its entry in recent tasks removed when the user closes it (with back or however else it may finish()).
If you would like to instead allow the document to be kept in recents so that it can be re-launched, you can use this flag. When set and the task's activity is finished, the recents entry will remain in the interface for the user to re-launch it, like a recents entry for a top-level application. Used as a boolean extra field in ACTION_PACKAGE_REMOVED, ACTION_UID_REMOVED, and ACTION_PACKAGE_ADDEDintents to indicate that this package is changing its UID. This would only be set when a package is leaving sharedUserId in an upgrade, or when a system app upgrade that had left sharedUserId is getting uninstalled.
Used as a boolean extra field with ACTION_INSTALL_PACKAGE or ACTION_UNINSTALL_PACKAGE. Specifies that the installer UI should return to the application the result code of the install/uninstall. The returned result code will be Activity.RESULT_OK on success or Activity.RESULT_FIRST_USER on failure. Used as an optional int extra field in ACTION_PACKAGE_ADDEDintents to supply the previous uid the package had been assigned. Used as an optional int extra field in ACTION_PACKAGE_REMOVEDintents to supply the new uid the package will be assigned. Callers can optionally specify EXTRA_LOCAL_ONLY to request that the launched content chooser only returns results representing data that is locally available on the device.
For example, if this extra is set to true then an image picker should not show any pictures that are available from a remote server but not already on the local device . String ACTION_CLOSE_SYSTEM_DIALOGS This constant was deprecated in API level 31. This intent is deprecated for third-party applications starting from Android Build.VERSION_CODES#S for security reasons. Instrumentation initiated from the shell (eg. tests) is still able to use the intent. The platform will automatically collapse the proper system dialogs in the proper use-cases.
For all others, the user is the one in control of closing dialogs. This filter describes the ability to return to the caller a note selected by the user without needing to know where it came from. The data type vnd.android.cursor.item/vnd.google.note is a URI from which a Cursor of exactly one (vnd.android.cursor.item) item can be retrieved which contains our note pad data (vnd.google.note).
The GET_CONTENT action is similar to the PICK action, where the activity will return to its caller a piece of data selected by the user. Here, however, the caller specifies the type of data they desire instead of the type of data the user will be picking from. Put together, the set of actions, data types, categories, and extra data defines a language for the system allowing for the expression of phrases such as "call john smith's cell". The most important is MATCH_DEFAULT_ONLY, to limit the resolution to only those activities that support the CATEGORY_DEFAULT.
Component The full component name (i.e. com.google.providers.media/com.google.providers.media.MediaProvider) of a ContentProvider class. Returns a PackageInfo object containing information about the package. If flag GET_UNINSTALLED_PACKAGES is set and if the package is not found in the list of installed applications, the package information is retrieved from the list of uninstalled applications. PackageName The full name (i.e. com.google.apps.contacts) of the desired package.
ApplicationInfo Returns ApplicationInfo object containing information about the package. If flag GET_UNINSTALLED_PACKAGES is set and if the package is not found in the list of installed applications, the application information is retrieved from the list of uninstalled applications. Class is used for retrieving various kinds of information related to the application packages that are currently installed on the device. You can get an instance of this class through getPackageManager(). When adding a new activity to feature module you will be asked to specify the app link. The intent filter will be created only with https scheme so I would recommend you to go to manifest file and also include http.
In setupMap(), add a listener that detects when the status of the location data source changes. In the listener's lambda, call the request permissions method so the user can approve location permissions. Check whether your app already has permissions for accessing fine location and coarse location by calling checkSelfPermission(). If one or both permissions have not been granted, then request permission from the user by calling ActivityCompat.requestPermissions().
Otherwise, show a Toast with a non-permission error, if any, retrieved from the status changed event that is passed to the current method. Intent An intent containing all of the desired specification (action, data, type, category, and/or component). Parses the "intent" element from XML and instantiates an Intent object.
The given XML parser should be located at the tag where parsing should start (often named "intent"), from which the basic action, data, type, and package and class name will be retrieved. The function will then parse in to any child elements, looking for tags to add categories and to attach extra data to the intent. This flag is used to create a new task and launch an activity into it. This flag is always paired with either FLAG_ACTIVITY_NEW_DOCUMENTor FLAG_ACTIVITY_NEW_TASK. In both cases these flags alone would search through existing tasks for ones matching this Intent. Only if no such task is found would a new task be created. When paired with FLAG_ACTIVITY_MULTIPLE_TASK both of these behaviors are modified to skip the search for a matching task and unconditionally start a new task.
When used with FLAG_ACTIVITY_NEW_TASK do not use this flag unless you are implementing your own top-level application launcher. Used in conjunction with FLAG_ACTIVITY_NEW_TASK to disable the behavior of bringing an existing task to the foreground. When set, a new task is always started to host the Activity for the Intent, regardless of whether there is already an existing task running the same thing.
A Bundle forming a mapping of potential target package names to different extras Bundles to add to the default intent extras in EXTRA_INTENT when used with ACTION_CHOOSER. The package need not be currently installed on the device. A Parcelable[] of Intent or LabeledIntent objects as set with putExtra(java.lang.String, android.os.Parcelable[]) to place at the front of the list of choices, when shown to the user with an ACTION_CHOOSER. You can choose up to two additional activities to show before the app suggestions . Sent the first time a user is starting, to allow system apps to perform one time initialization. This is sent as a foreground broadcast, since it is part of a visible user interaction; be as quick as possible when handling it.
This happens when an Activity is launched, but the split that contains the application isn't installed. When a split is installed in this manner, the containing package usually doesn't know this is happening. However, if an error occurs during installation, the containing package can define a single activity handling this action to deal with such failures. There are a variety of standard Intent action and category constants defined in the Intent class, but applications can also define their own. These strings use Java-style scoping, to ensure they are unique -- for example, the standard ACTION_VIEW is called "android.intent.action.VIEW".
Filter The set of intents under which this activity will be made preferred. Match The IntentFilter match category that this preference applies to. Set The set of activities that the user was picking from when this preference was made. Activity The component name of the activity that is to be preferred. (IntentFilter filter, int match, ComponentName[] set, ComponentName activity) This method was deprecated in API level 8. This is a protected API that should not have been available to third party applications.
