Intent display intent and implicit intent

Intent is intended, the communication between the four components is divided into explicit and implicit intent through intent.

Intent a good understanding is to specify the interface to jump:

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You can pass different types of information through Putextra, which is just a few examples. You can then receive this information at secondactivity:

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The int type is displayed when the Boolean type is received when the message to be written is not received, and is to be noted separately from the information being passed.

The implicit intent of the intent is in contrast to the interface that does not specify a jump, which jumps according to the value of the set action, as long as it matches the action value set:

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Then set the filter condition in the manifest file Androidmanifest.xml

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Of course intent's implicit intent can also jump to another apk, as long as the value of the action is matched.

Explicit and implicit intentions of Intent