If none of the actions can match the actions specified by the Intent, the Intent Filter is considered to have failed the action match check. According to the matching results of the three, find the Activity that should be started.Īction matching means that the Android Intent Filter contains specific actions or no specified actions.Īn Intent Filter has one or more defined actions. This requires three matches, one is action, one is category, and one is data. Which activity is the Implicit Intent sent to? If there are multiple activities that have the ability to perform a given action on specific data, Android will select the best one to start.
When using startActivity, the implicit Intent resolves to a single Activity.
There is no clear designation of which Activity to start, but by setting some Intent Filters to let the system filter the appropriate Acitivity to start. Such as the following Java code, which clearly specifies B to be started: There are two ways to start that Acitivity: implicit (hidden) intent and explicit (clear) intent Explicit IntentĬlearly specify the Acitivity to be started,
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