![]() Their behaviors, create separate intent filters to specify which actions are acceptableįor example, suppose your activity handles both text and images for both the ACTION_SEND and ACTION_SENDTO intents. If any two pairs of action and data are mutually exclusive in Instances of the, , and elements in each Tip: If you want the icon in the chooser dialog to be differentįrom your activity's default icon, add android:icon in the Įach incoming intent specifies only one action and one data type, but it's OK to declare multiple In your intent filter, you can declare which criteria your activity acceptsīy declaring each of them with corresponding XML elements nested in the įor example, here's an activity with an intent filter that handles the ACTION_SEND intent when the data type is either text or an image: Specify this in your intent filter with the However, all implicit intents are defined with Supported by the system, but most are rarely used. To the user gesture or location from which it's started. Category Provides an additional way to characterize the activity handling the intent, usually related ![]() Other kind of "extra" data, instead of a URI, specify only the android:mimeType attribute to declare the type ofĭata your activity handles, such as text/plain or image/jpeg. Note: If you don't need to declare specifics about the data Or more attributes in this element, you can specify the MIME type, a URI prefix,Ī URI scheme, or a combination of these and others that indicate the data type Specify this in your intent filter with the element. Data A description of the data associated with the intent. The value you specify in this element must be the full string name for the action, instead of theĪPI constant, as shown in the examples on this page. Usually one of the platform-defined values, such ![]() The system might send a given Intent to an activity if that activity hasĪn intent filter that fulfills the following criteria of the Intent object: Action A string naming the action to perform. To properly define which intents your activity can handle, make each intent filter you addĪs specific as possible in terms of the type of action and data the activity With an implicit intent, the system checks for activities that can respond to the When an app calls startActivity() or startActivityForResult() When your app is installed on a device, the system identifies your intentįilters and adds the information to an internal catalog of intents supported by all installed apps. To let other apps start your activity in this way, you need to add an Įlement in your manifest file for the corresponding element. Then, when users initiate a "share" action from another app, your app appears as an option in theĬhooser dialog (also known as the disambiguation dialog), as shown in figure 1. The appropriate intent filter in your activity.īuild a social app that can share messages or photos with the user's friends, Prepare it to respond to action requests by specifying If your app can perform an action that might be useful to another app,
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