In fact, this situation has been implemented before, that is, calling the startActivity() method directly to start it. Next, according to the three situations I have worked out here, I will talk about them briefly and implement them in Code: When A starts B, it needs to transfer data, jump from A with data to B, and receive data from B Ī starts B, optional to transfer data, jumps from a (with or without data) to B, receives data from B, and returns data from B to a So there are three situations in the process of Activity interaction:Ī starts B, does not need to transfer data, and directly jumps from a to B

The Intent object can also carry a small amount of data used by the started Activity. The Intent object specifies the Activity you want to start, or describes the type of operation you want to perform (the system selects the corresponding Activity for you, which can even come from different applications). Both methods need to pass in an Intent object. You can start a new Activity by using the startActivity() or startActivityForResult() method, depending on whether your Activity wants to get the return result from the new Activity that is about to start.

In the process of Activity interaction, data must be transferred between two activities.

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