Example usage for android.view ViewGroup startViewTransition

List of usage examples for android.view ViewGroup startViewTransition

Introduction

In this page you can find the example usage for android.view ViewGroup startViewTransition.

Prototype

public void startViewTransition(View view) 

Source Link

Document

This method tells the ViewGroup that the given View object, which should have this ViewGroup as its parent, should be kept around (re-displayed when the ViewGroup draws its children) even if it is removed from its parent.

Usage

From source file:android.app.FragmentManager.java

void moveToState(Fragment f, int newState, int transit, int transitionStyle, boolean keepActive) {
    if (DEBUG && false)
        Log.v(TAG, "moveToState: " + f + " oldState=" + f.mState + " newState=" + newState + " mRemoving="
                + f.mRemoving + " Callers=" + Debug.getCallers(5));

    // Fragments that are not currently added will sit in the onCreate() state.
    if ((!f.mAdded || f.mDetached) && newState > Fragment.CREATED) {
        newState = Fragment.CREATED;//  w  w w .j  a v  a 2  s  . c  o  m
    }
    if (f.mRemoving && newState > f.mState) {
        // While removing a fragment, we can't change it to a higher state.
        newState = f.mState;
    }
    // Defer start if requested; don't allow it to move to STARTED or higher
    // if it's not already started.
    if (f.mDeferStart && f.mState < Fragment.STARTED && newState > Fragment.STOPPED) {
        newState = Fragment.STOPPED;
    }
    if (f.mState < newState) {
        // For fragments that are created from a layout, when restoring from
        // state we don't want to allow them to be created until they are
        // being reloaded from the layout.
        if (f.mFromLayout && !f.mInLayout) {
            return;
        }
        if (f.mAnimatingAway != null) {
            // The fragment is currently being animated...  but!  Now we
            // want to move our state back up.  Give up on waiting for the
            // animation, move to whatever the final state should be once
            // the animation is done, and then we can proceed from there.
            f.mAnimatingAway = null;
            moveToState(f, f.mStateAfterAnimating, 0, 0, true);
        }
        switch (f.mState) {
        case Fragment.INITIALIZING:
            if (DEBUG)
                Log.v(TAG, "moveto CREATED: " + f);
            if (f.mSavedFragmentState != null) {
                f.mSavedViewState = f.mSavedFragmentState
                        .getSparseParcelableArray(FragmentManagerImpl.VIEW_STATE_TAG);
                f.mTarget = getFragment(f.mSavedFragmentState, FragmentManagerImpl.TARGET_STATE_TAG);
                if (f.mTarget != null) {
                    f.mTargetRequestCode = f.mSavedFragmentState
                            .getInt(FragmentManagerImpl.TARGET_REQUEST_CODE_STATE_TAG, 0);
                }
                f.mUserVisibleHint = f.mSavedFragmentState.getBoolean(FragmentManagerImpl.USER_VISIBLE_HINT_TAG,
                        true);
                if (!f.mUserVisibleHint) {
                    f.mDeferStart = true;
                    if (newState > Fragment.STOPPED) {
                        newState = Fragment.STOPPED;
                    }
                }
            }
            f.mActivity = mActivity;
            f.mParentFragment = mParent;
            f.mFragmentManager = mParent != null ? mParent.mChildFragmentManager : mActivity.mFragments;
            f.mCalled = false;
            f.onAttach(mActivity);
            if (!f.mCalled) {
                throw new SuperNotCalledException(
                        "Fragment " + f + " did not call through to super.onAttach()");
            }
            if (f.mParentFragment == null) {
                mActivity.onAttachFragment(f);
            }

            if (!f.mRetaining) {
                f.performCreate(f.mSavedFragmentState);
            }
            f.mRetaining = false;
            if (f.mFromLayout) {
                // For fragments that are part of the content view
                // layout, we need to instantiate the view immediately
                // and the inflater will take care of adding it.
                f.mView = f.performCreateView(f.getLayoutInflater(f.mSavedFragmentState), null,
                        f.mSavedFragmentState);
                if (f.mView != null) {
                    f.mView.setSaveFromParentEnabled(false);
                    if (f.mHidden)
                        f.mView.setVisibility(View.GONE);
                    f.onViewCreated(f.mView, f.mSavedFragmentState);
                }
            }
        case Fragment.CREATED:
            if (newState > Fragment.CREATED) {
                if (DEBUG)
                    Log.v(TAG, "moveto ACTIVITY_CREATED: " + f);
                if (!f.mFromLayout) {
                    ViewGroup container = null;
                    if (f.mContainerId != 0) {
                        container = (ViewGroup) mContainer.findViewById(f.mContainerId);
                        if (container == null && !f.mRestored) {
                            throwException(new IllegalArgumentException(
                                    "No view found for id 0x" + Integer.toHexString(f.mContainerId) + " ("
                                            + f.getResources().getResourceName(f.mContainerId)
                                            + ") for fragment " + f));
                        }
                    }
                    f.mContainer = container;
                    f.mView = f.performCreateView(f.getLayoutInflater(f.mSavedFragmentState), container,
                            f.mSavedFragmentState);
                    if (f.mView != null) {
                        f.mView.setSaveFromParentEnabled(false);
                        if (container != null) {
                            Animator anim = loadAnimator(f, transit, true, transitionStyle);
                            if (anim != null) {
                                anim.setTarget(f.mView);
                                anim.start();
                            }
                            container.addView(f.mView);
                        }
                        if (f.mHidden)
                            f.mView.setVisibility(View.GONE);
                        f.onViewCreated(f.mView, f.mSavedFragmentState);
                    }
                }

                f.performActivityCreated(f.mSavedFragmentState);
                if (f.mView != null) {
                    f.restoreViewState(f.mSavedFragmentState);
                }
                f.mSavedFragmentState = null;
            }
        case Fragment.ACTIVITY_CREATED:
        case Fragment.STOPPED:
            if (newState > Fragment.STOPPED) {
                if (DEBUG)
                    Log.v(TAG, "moveto STARTED: " + f);
                f.performStart();
            }
        case Fragment.STARTED:
            if (newState > Fragment.STARTED) {
                if (DEBUG)
                    Log.v(TAG, "moveto RESUMED: " + f);
                f.mResumed = true;
                f.performResume();
                // Get rid of this in case we saved it and never needed it.
                f.mSavedFragmentState = null;
                f.mSavedViewState = null;
            }
        }
    } else if (f.mState > newState) {
        switch (f.mState) {
        case Fragment.RESUMED:
            if (newState < Fragment.RESUMED) {
                if (DEBUG)
                    Log.v(TAG, "movefrom RESUMED: " + f);
                f.performPause();
                f.mResumed = false;
            }
        case Fragment.STARTED:
            if (newState < Fragment.STARTED) {
                if (DEBUG)
                    Log.v(TAG, "movefrom STARTED: " + f);
                f.performStop();
            }
        case Fragment.STOPPED:
        case Fragment.ACTIVITY_CREATED:
            if (newState < Fragment.ACTIVITY_CREATED) {
                if (DEBUG)
                    Log.v(TAG, "movefrom ACTIVITY_CREATED: " + f);
                if (f.mView != null) {
                    // Need to save the current view state if not
                    // done already.
                    if (!mActivity.isFinishing() && f.mSavedViewState == null) {
                        saveFragmentViewState(f);
                    }
                }
                f.performDestroyView();
                if (f.mView != null && f.mContainer != null) {
                    Animator anim = null;
                    if (mCurState > Fragment.INITIALIZING && !mDestroyed) {
                        anim = loadAnimator(f, transit, false, transitionStyle);
                    }
                    if (anim != null) {
                        final ViewGroup container = f.mContainer;
                        final View view = f.mView;
                        final Fragment fragment = f;
                        container.startViewTransition(view);
                        f.mAnimatingAway = anim;
                        f.mStateAfterAnimating = newState;
                        anim.addListener(new AnimatorListenerAdapter() {
                            @Override
                            public void onAnimationEnd(Animator anim) {
                                container.endViewTransition(view);
                                if (fragment.mAnimatingAway != null) {
                                    fragment.mAnimatingAway = null;
                                    moveToState(fragment, fragment.mStateAfterAnimating, 0, 0, false);
                                }
                            }
                        });
                        anim.setTarget(f.mView);
                        anim.start();

                    }
                    f.mContainer.removeView(f.mView);
                }
                f.mContainer = null;
                f.mView = null;
            }
        case Fragment.CREATED:
            if (newState < Fragment.CREATED) {
                if (mDestroyed) {
                    if (f.mAnimatingAway != null) {
                        // The fragment's containing activity is
                        // being destroyed, but this fragment is
                        // currently animating away.  Stop the
                        // animation right now -- it is not needed,
                        // and we can't wait any more on destroying
                        // the fragment.
                        Animator anim = f.mAnimatingAway;
                        f.mAnimatingAway = null;
                        anim.cancel();
                    }
                }
                if (f.mAnimatingAway != null) {
                    // We are waiting for the fragment's view to finish
                    // animating away.  Just make a note of the state
                    // the fragment now should move to once the animation
                    // is done.
                    f.mStateAfterAnimating = newState;
                    newState = Fragment.CREATED;
                } else {
                    if (DEBUG)
                        Log.v(TAG, "movefrom CREATED: " + f);
                    if (!f.mRetaining) {
                        f.performDestroy();
                    }

                    f.mCalled = false;
                    f.onDetach();
                    if (!f.mCalled) {
                        throw new SuperNotCalledException(
                                "Fragment " + f + " did not call through to super.onDetach()");
                    }
                    if (!keepActive) {
                        if (!f.mRetaining) {
                            makeInactive(f);
                        } else {
                            f.mActivity = null;
                            f.mParentFragment = null;
                            f.mFragmentManager = null;
                        }
                    }
                }
            }
        }
    }

    f.mState = newState;
}

From source file:android.app.FragmentManager.java

void moveToState(Fragment f, int newState, int transit, int transitionStyle, boolean keepActive) {
    if (DEBUG && false)
        Log.v(TAG, "moveToState: " + f + " oldState=" + f.mState + " newState=" + newState + " mRemoving="
                + f.mRemoving + " Callers=" + Debug.getCallers(5));

    // Fragments that are not currently added will sit in the onCreate() state.
    if ((!f.mAdded || f.mDetached) && newState > Fragment.CREATED) {
        newState = Fragment.CREATED;/*from   ww w .  jav  a  2s.c om*/
    }
    if (f.mRemoving && newState > f.mState) {
        // While removing a fragment, we can't change it to a higher state.
        newState = f.mState;
    }
    // Defer start if requested; don't allow it to move to STARTED or higher
    // if it's not already started.
    if (f.mDeferStart && f.mState < Fragment.STARTED && newState > Fragment.STOPPED) {
        newState = Fragment.STOPPED;
    }
    if (f.mState < newState) {
        // For fragments that are created from a layout, when restoring from
        // state we don't want to allow them to be created until they are
        // being reloaded from the layout.
        if (f.mFromLayout && !f.mInLayout) {
            return;
        }
        if (f.mAnimatingAway != null) {
            // The fragment is currently being animated...  but!  Now we
            // want to move our state back up.  Give up on waiting for the
            // animation, move to whatever the final state should be once
            // the animation is done, and then we can proceed from there.
            f.mAnimatingAway = null;
            moveToState(f, f.mStateAfterAnimating, 0, 0, true);
        }
        switch (f.mState) {
        case Fragment.INITIALIZING:
            if (DEBUG)
                Log.v(TAG, "moveto CREATED: " + f);
            if (f.mSavedFragmentState != null) {
                f.mSavedViewState = f.mSavedFragmentState
                        .getSparseParcelableArray(FragmentManagerImpl.VIEW_STATE_TAG);
                f.mTarget = getFragment(f.mSavedFragmentState, FragmentManagerImpl.TARGET_STATE_TAG);
                if (f.mTarget != null) {
                    f.mTargetRequestCode = f.mSavedFragmentState
                            .getInt(FragmentManagerImpl.TARGET_REQUEST_CODE_STATE_TAG, 0);
                }
                f.mUserVisibleHint = f.mSavedFragmentState.getBoolean(FragmentManagerImpl.USER_VISIBLE_HINT_TAG,
                        true);
                if (!f.mUserVisibleHint) {
                    f.mDeferStart = true;
                    if (newState > Fragment.STOPPED) {
                        newState = Fragment.STOPPED;
                    }
                }
            }
            f.mActivity = mActivity;
            f.mParentFragment = mParent;
            f.mFragmentManager = mParent != null ? mParent.mChildFragmentManager : mActivity.mFragments;
            f.mCalled = false;
            f.onAttach(mActivity);
            if (!f.mCalled) {
                throw new SuperNotCalledException(
                        "Fragment " + f + " did not call through to super.onAttach()");
            }
            if (f.mParentFragment == null) {
                mActivity.onAttachFragment(f);
            }

            if (!f.mRetaining) {
                f.performCreate(f.mSavedFragmentState);
            }
            f.mRetaining = false;
            if (f.mFromLayout) {
                // For fragments that are part of the content view
                // layout, we need to instantiate the view immediately
                // and the inflater will take care of adding it.
                f.mView = f.performCreateView(f.getLayoutInflater(f.mSavedFragmentState), null,
                        f.mSavedFragmentState);
                if (f.mView != null) {
                    f.mView.setSaveFromParentEnabled(false);
                    if (f.mHidden)
                        f.mView.setVisibility(View.GONE);
                    f.onViewCreated(f.mView, f.mSavedFragmentState);
                }
            }
        case Fragment.CREATED:
            if (newState > Fragment.CREATED) {
                if (DEBUG)
                    Log.v(TAG, "moveto ACTIVITY_CREATED: " + f);
                if (!f.mFromLayout) {
                    ViewGroup container = null;
                    if (f.mContainerId != 0) {
                        container = (ViewGroup) mContainer.findViewById(f.mContainerId);
                        if (container == null && !f.mRestored) {
                            throwException(new IllegalArgumentException(
                                    "No view found for id 0x" + Integer.toHexString(f.mContainerId) + " ("
                                            + f.getResources().getResourceName(f.mContainerId)
                                            + ") for fragment " + f));
                        }
                    }
                    f.mContainer = container;
                    f.mView = f.performCreateView(f.getLayoutInflater(f.mSavedFragmentState), container,
                            f.mSavedFragmentState);
                    if (f.mView != null) {
                        f.mView.setSaveFromParentEnabled(false);
                        if (container != null) {
                            Animator anim = loadAnimator(f, transit, true, transitionStyle);
                            if (anim != null) {
                                anim.setTarget(f.mView);
                                anim.start();
                            }
                            container.addView(f.mView);
                        }
                        if (f.mHidden)
                            f.mView.setVisibility(View.GONE);
                        f.onViewCreated(f.mView, f.mSavedFragmentState);
                    }
                }

                f.performActivityCreated(f.mSavedFragmentState);
                if (f.mView != null) {
                    f.restoreViewState(f.mSavedFragmentState);
                }
                f.mSavedFragmentState = null;
            }
        case Fragment.ACTIVITY_CREATED:
        case Fragment.STOPPED:
            if (newState > Fragment.STOPPED) {
                if (DEBUG)
                    Log.v(TAG, "moveto STARTED: " + f);
                f.performStart();
            }
        case Fragment.STARTED:
            if (newState > Fragment.STARTED) {
                if (DEBUG)
                    Log.v(TAG, "moveto RESUMED: " + f);
                f.mResumed = true;
                f.performResume();
                // Get rid of this in case we saved it and never needed it.
                f.mSavedFragmentState = null;
                f.mSavedViewState = null;
            }
        }
    } else if (f.mState > newState) {
        switch (f.mState) {
        case Fragment.RESUMED:
            if (newState < Fragment.RESUMED) {
                if (DEBUG)
                    Log.v(TAG, "movefrom RESUMED: " + f);
                f.performPause();
                f.mResumed = false;
            }
        case Fragment.STARTED:
            if (newState < Fragment.STARTED) {
                if (DEBUG)
                    Log.v(TAG, "movefrom STARTED: " + f);
                f.performStop();
            }
        case Fragment.STOPPED:
        case Fragment.ACTIVITY_CREATED:
            if (newState < Fragment.ACTIVITY_CREATED) {
                if (DEBUG)
                    Log.v(TAG, "movefrom ACTIVITY_CREATED: " + f);
                if (f.mView != null) {
                    // Need to save the current view state if not
                    // done already.
                    if (!mActivity.isFinishing() && f.mSavedViewState == null) {
                        saveFragmentViewState(f);
                    }
                }
                f.performDestroyView();
                if (f.mView != null && f.mContainer != null) {
                    Animator anim = null;
                    if (mCurState > Fragment.INITIALIZING && !mDestroyed) {
                        anim = loadAnimator(f, transit, false, transitionStyle);
                    }
                    if (anim != null) {
                        final ViewGroup container = f.mContainer;
                        final View view = f.mView;
                        final Fragment fragment = f;
                        container.startViewTransition(view);
                        f.mAnimatingAway = anim;
                        f.mStateAfterAnimating = newState;
                        anim.addListener(new AnimatorListenerAdapter() {
                            @Override
                            public void onAnimationEnd(Animator anim) {
                                container.endViewTransition(view);
                                if (fragment.mAnimatingAway != null) {
                                    fragment.mAnimatingAway = null;
                                    moveToState(fragment, fragment.mStateAfterAnimating, 0, 0, false);
                                }
                            }
                        });
                        anim.setTarget(f.mView);
                        anim.start();

                    }
                    f.mContainer.removeView(f.mView);
                }
                f.mContainer = null;
                f.mView = null;
            }
        case Fragment.CREATED:
            if (newState < Fragment.CREATED) {
                if (mDestroyed) {
                    if (f.mAnimatingAway != null) {
                        // The fragment's containing activity is
                        // being destroyed, but this fragment is
                        // currently animating away.  Stop the
                        // animation right now -- it is not needed,
                        // and we can't wait any more on destroying
                        // the fragment.
                        Animator anim = f.mAnimatingAway;
                        f.mAnimatingAway = null;
                        anim.cancel();
                    }
                }
                if (f.mAnimatingAway != null) {
                    // We are waiting for the fragment's view to finish
                    // animating away.  Just make a note of the state
                    // the fragment now should move to once the animation
                    // is done.
                    f.mStateAfterAnimating = newState;
                    newState = Fragment.CREATED;
                } else {
                    if (DEBUG)
                        Log.v(TAG, "movefrom CREATED: " + f);
                    if (!f.mRetaining) {
                        f.performDestroy();
                    }

                    f.mCalled = false;
                    f.onDetach();
                    if (!f.mCalled) {
                        throw new SuperNotCalledException(
                                "Fragment " + f + " did not call through to super.onDetach()");
                    }
                    if (!keepActive) {
                        if (!f.mRetaining) {
                            makeInactive(f);
                        } else {
                            f.mActivity = null;
                            f.mParentFragment = null;
                            f.mFragmentManager = null;
                            f.mChildFragmentManager = null;
                        }
                    }
                }
            }
        }
    }

    f.mState = newState;
}