How does Android select the best component to run for an implicit intent

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i am not getting about the way android use to determine which among the available component are best to run ?

if two component have the same importance, then how does the android decide whom to run ?

Thank You
 
When Intents are broadcast they will be picked up by all receivers that listen for that intent.

So, for example, when an SMS_RECEIVED intent is broadcast, it'll be received by the Messaging app, and on my phone my Phone Finder app, Missed Call, and a bunch of others that respond to SMS commands.

If an app is launched by an Intent (such as Radar, or opening a URL) and there are multiple applications that can handle that Intent, then Android either uses the default all that's selected, or pops up a selection box asking you to choose which app to use (optionally checking a box to make that choice the default).
 
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