#FragmentBuilder
FragmentBuilder is designed for solving back stack behaviour with nested fragments.
http://stackoverflow.com/a/24176614/1584100
@Override
public void onBackPressed() {
if (FragmentBuilder.hasPopBackStack(this)) {
return;
}
super.onBackPressed();
}
// Use FragmentManager
getSupportFragmentManager()
.beginTransaction()
.add(R.id.container,fragment)
.commit();
// Use FragmentBuilder
FragmentBuilder
.create(this)
.add(R.id.container,fragment)
.build();
You can implement the PopFragmentListener on FragmentActicity, Fragment, even View.
@Override
public void onPopFragment(Fragment fragment) {
// Access any you want from Fragment
}
// Or exactly class
public void onPopFragment(SelectDateFragment fragment) {
// Access any you want from Fragment
}
-keepclassmembers class ** {
public void onPopFragment(**);
}
FragmentBuilder has two Actions can be used. It is same to FragmentTransaction add() and replace().
BUT there are two PreActions back() and reset() can use.
back() PreAction is used to transfer TargetObject and ContainerViewId even Action according back FragmentPath
back() is useful to implement wizard steps!
A -> B -> C
then onBackPressed C is popped out from FragmentManager's back stack. B will receive C by onPopFragment().
A -> B <-(C)
then onBackPressed B is popped out from FragmentManager's back stack. A will receive B by onPopFragment().
A <-(B)
A <-(B) <-(C)
C refer B's setting and pass to A, so A will receive C and B.
reset() PreAction is used to replace Fragment and follow old FragmentBuilder setting. Like below:
A -> B -> C
( When C reset to D )
A -> B -> D
You did not to setting everything you do to C.
FragmentPath is this whole library core. We use it to find all Fragment from FragmentActivity.
We put all information to FragmentTransaction's addStackName method, and parse information by RegEx.
Before popBackState(), We parse BackStackEntry's name(naming by addStackName method), then create PopFragmentSender to trigger onPopFragment method.
Fragment.getId() equals containerViewId.
Wherever you call FragmentBuilder, it will find FragmentPath. ( FragmentActivity, Fragment, View )
onAttachedToWindow -> onRestoreInstanceState -> onActivityResult
onAttachedToWindow -> onRestoreInstanceState -> FragmentManager.OnBackStackChangedListener
onRestoreInstanceState -> onAttachedToWindow
onActivityResult
FragmentManager.OnBackStackChangedListener
onRestoreInstanceState -> onActivityResult -> onAttachedToWindow
為了處理不同的資料來源，所以使用 View.post 的方式來延遲，得到所有資料後再進行處理。
在所有可能觸發的地方使用延遲處理!
private boolean isPostRun = false;
private void delayRun() {
if (!isPostRun) {
isPostRun = true;
post(this);
}
}
@Override
public void run() {
//after handle data
isPostRun = false;
}
@Override
protected void onAttachedToWindow() {
delayRun();
super.onAttachedToWindow();
// if data is null set default data
}
@Override
public void onRestoreInstanceState(Parcelable state) {
delayRun();
super.onRestoreInstanceState(state);
// set data
}
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
delayRun();
// set data
}
public void onPopFragment(F11Fragment fragment) {
delayRun();
// set data
}
--------------- enter
performCreate before
State:0
isAdded:true
isResumed:false
isInLayout:false
isInBackStack:false
isDetached:false
isRemoving:false
isMenuVisible:true
isVisible:false
isHidden:false
performCreate after
State:1
performCreateView before
performCreateView after
onCreateAnimation
performActivityCreated before
isVisible:true
performActivityCreated after
State:2
onViewStateRestored
performStart before
onStart
State:4
performStart after
performResume before
onResume
State:5
isResumed:true
performResume after
--------------- exit
performPause before
State:5
isAdded:false
isResumed:true
isInBackStack:false
isDetached:false
isRemoving:true
isVisible:false
onPause
State:4
isResumed:false
performPause after
直接移除不用保存狀態
performStop before
onStop
State:3
performStop after
performReallyStop before
performReallyStop after
State:2
performDestroyView before
onDestroyView
State:1
performDestroyView after
onCreateAnimation
performDestroy before
onDestroy
State:0
performDestroy after
getFragmentManagerActivity(fragment.getChildFragmentManager())==null:true
---------------rotation exit then enter
performPause before
State:5
isAdded:true
isResumed:true
isInBackStack:false
isDetached:false
isRemoving:false
isVisible:true
onPause
State:4
isResumed:false
performPause after
performSaveInstanceState before
onSaveInstanceState
performSaveInstanceState after
performStop before
onStop
State:3
performStop after
performReallyStop before
performReallyStop after
State:2
performDestroyView before
onDestroyView
State:1
performDestroyView after
onCreateAnimation
performDestroy before
onDestroy
State:0
performDestroy after
getFragmentManagerActivity(fragment.getChildFragmentManager())==null:true
performCreate before
State:0
isAdded:true
isResumed:false
isVisible:false *
performCreate after
State:1
performCreateView before
performCreateView after
State:2
onCreateAnimation
performActivityCreated before
isVisible:false *
performActivityCreated after
onViewStateRestored
performStart before
onStart
State:4
performStart after
performResume before
onResume
State:5
isResumed:true
---------------addBackStack push enter
performCreate before
State:0
isAdded:true
isResumed:false
isInBackStack:true
isDetached:false
isRemoving:false
isVisible:false
performCreate after
State:1
performCreateView before
performCreateView after
onCreateAnimation
performActivityCreated before
isVisible:true
performActivityCreated after
State:2
onViewStateRestored
performStart before
onStart
State:4
performStart after
performResume before
onResume
State:5
isResumed:true
performResume after
---------------addBackStack push exit
performPause before
State:5
isAdded:false
isResumed:true
isInBackStack:true
isDetached or isRemoving:true
isVisible:false
onPause
State:4
isResumed:false
performPause after
performStop before
onStop
State:3
performStop after
performReallyStop before
performReallyStop after
State:2
performDestroyView before
onDestroyView
State:1
performDestroyView after
onCreateAnimation
如果在接 Rotation 會進行 performSaveInstanceState, performDestroy, performCreate
因此保持 pop enter時步驟不變
---------------addBackStack pop enter
performCreateView before
State:1
isAdded:true
isResumed:false
isInLayout:false
isInBackStack:true
isDetached:false
isRemoving:false
isMenuVisible:true
isVisible:false
isHidden:false
performCreateView after
onCreateAnimation
performActivityCreated before
isVisible:true
performActivityCreated after
State:2
onViewStateRestored
performStart before
onStart
State:4
performStart after
performResume before
onResume
State:5
isResumed:true
performResume after
---------------addBackStack pop exit
performPause before
State:5
isAdded:false
isResumed:true
isInBackStack:false
isDetached or isRemoving:true
isVisible:false
onPause
State:4
isResumed:false
performPause after
performStop before
onStop
State:3
performStop after
performReallyStop before
performReallyStop after
State:2
performDestroyView before
onDestroyView
State:1
performDestroyView after
onCreateAnimation
performDestroy before
onDestroy
State:0
performDestroy after
getFragmentManagerActivity(fragment.getChildFragmentManager())==null:true
Detach cause fragment call onPause(),but attach cause fragment call onCreateView() expect onResume()