Android – implementation code for switching fragment page function

Scenario: use fragment to realize page cutting.

Class structure:

1： Activity

Getsupportfragmentmanager(). Begintransaction() is used in the activity to fill in a fragment (fragmenta for management)

Activity part code:

XML:

2： Fragmenta

Load a main fragmenta to manage other sub blade fragmentx.

Now, for example, there are two sub blades fragmentb and fragmentc

Fragmenta uses fragmentmanager and fragmenttransaction to manage the switching between fragmentb and fragmentc

Fragmenta Code:

XML:

3： Fragmentx (fragmentb, fragmentc)

The logic of the sub page is defined according to the specific business, and the implementation is the same as that of the general fragmeng

For example:

Here, you can simply implement the function of page cutting by switching fragment with the bottom tab

Attached drawings:

PS: error during implementation

Correct method: false should be added to the initialization layout of the relevant fragment to establish a relationship with the parent class layout.

Reason: if it is not added, the view system from the inflator will bind an unknown parent class. At this time, when you bind this fragment to an activity or another fragment as a child page, the above error will occur.

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