turn 1
Android set a button in the activity, the click jumps fragments, but after the jump shows at the same time, two pages content bosses how to settle this problem I!!

 
@ Override 
Public void onClick (View v) {
Androidx. Fragments. App. FragmentManager FragmentManager=getSupportFragmentManager (); 
Androidx. Fragments. App. FragmentTransaction beginTransaction=fragmentManager. BeginTransaction (); 
The switch (v.g etId ()) {
Case R.i d.f rg1: 
The d (TAG, "click jump events"); 
BeginTransaction. Replace (R.i d.m ain_re, new BlankFragment ()); 
BeginTransaction. AddToBackStack (null); 
break; 
} 
BeginTransaction.com MIT (); 
//moveTaskToBack (true); 
} 

This is MainActivity layout

 
<? The XML version="1.0" encoding="utf-8"?> 
XMLNS: app="http://schemas.android.com/apk/res-auto" 
XMLNS: tools="http://schemas.android.com/tools" 
Android: layout_width="match_parent" 
Android: layout_height="match_parent" 
Tools: context="MainActivity" & gt; 

<frameLayout 
The android: id="@ + id/main_re" 
Android: layout_width="match_parent" 
Android: layout_height="match_parent" & gt; 

The android: id="@ + id/frg1" 
Android: layout_width="match_parent" 
Android: layout_height="wrap_content" 
Android: autoLink="all" 
Android: text="jump" 
Tools: ignore="MissingConstraints" 
Tools: layout_editor_absoluteX="248 dp" 
Tools: layout_editor_absoluteY="295 dp/& gt;" 

 

 

This is to run the results

CodePudding user response:

To hide, show again

CodePudding user response:

Fragments attached to the Activity itself, it cannot be called a jump, you just fragments in the Activity of the container, if the container can't cover the Activity all layout, isn't that shows at the same time