Ensure that fragments are created in added order. (a7245b42) · Commits · e / os / android_frameworks_base

core/java/android/app/BackStackRecord.java

+23 −27

Original line number	Diff line number	Diff line
		@@ -16,8 +16,6 @@

		package android.app;

		import com.android.internal.util.FastPrintWriter;

		import android.graphics.Rect;
		import android.os.Parcel;
		import android.os.Parcelable;
		@@ -33,6 +31,8 @@ import android.view.View;
		import android.view.ViewGroup;
		import android.view.ViewTreeObserver;

		import com.android.internal.util.FastPrintWriter;

		import java.io.FileDescriptor;
		import java.io.PrintWriter;
		import java.util.ArrayList;
		@@ -713,10 +713,12 @@ final class BackStackRecord extends FragmentTransaction implements

		bumpBackStackNesting(1);

		if (mManager.mCurState >= Fragment.CREATED) {
		SparseArray<Fragment> firstOutFragments = new SparseArray<Fragment>();
		SparseArray<Fragment> lastInFragments = new SparseArray<Fragment>();
		calculateFragments(firstOutFragments, lastInFragments);
		beginTransition(firstOutFragments, lastInFragments, false);
		}

		Op op = mHead;
		while (op != null) {
		@@ -838,6 +840,14 @@ final class BackStackRecord extends FragmentTransaction implements
		firstOutFragments.remove(containerId);
		}
		}
		/**
		* Ensure that fragments that are entering are at least at the CREATED state
		* so that they may load Transitions using TransitionInflater.
		*/
		if (fragment.mState < Fragment.CREATED && mManager.mCurState >= Fragment.CREATED) {
		mManager.makeActive(fragment);
		mManager.moveToState(fragment, Fragment.CREATED, 0, 0, false);
		}
		}
		}

		@@ -982,7 +992,6 @@ final class BackStackRecord extends FragmentTransaction implements
		*/
		private TransitionState beginTransition(SparseArray<Fragment> firstOutFragments,
		SparseArray<Fragment> lastInFragments, boolean isBack) {
		ensureFragmentsAreInitialized(lastInFragments);
		TransitionState state = new TransitionState();

		// Adding a non-existent target view makes sure that the transitions don't target
		@@ -1008,21 +1017,6 @@ final class BackStackRecord extends FragmentTransaction implements
		return state;
		}

		/**
		* Ensure that fragments that are entering are at least at the CREATED state
		* so that they may load Transitions using TransitionInflater.
		*/
		private void ensureFragmentsAreInitialized(SparseArray<Fragment> lastInFragments) {
		final int count = lastInFragments.size();
		for (int i = 0; i < count; i++) {
		final Fragment fragment = lastInFragments.valueAt(i);
		if (fragment.mState < Fragment.CREATED) {
		mManager.makeActive(fragment);
		mManager.moveToState(fragment, Fragment.CREATED, 0, 0, false);
		}
		}
		}

		private static Transition cloneTransition(Transition transition) {
		if (transition != null) {
		transition = transition.clone();
		@@ -1659,6 +1653,7 @@ final class BackStackRecord extends FragmentTransaction implements
		pw.flush();
		}

		if (mManager.mCurState >= Fragment.CREATED) {
		if (state == null) {
		if (firstOutFragments.size() != 0 \|\| lastInFragments.size() != 0) {
		state = beginTransition(firstOutFragments, lastInFragments, true);
		@@ -1666,6 +1661,7 @@ final class BackStackRecord extends FragmentTransaction implements
		} else if (!doStateMove) {
		setNameOverrides(state, mSharedElementTargetNames, mSharedElementSourceNames);
		}
		}

		bumpBackStackNesting(-1);

core/java/android/app/FragmentManager.java

+7 −3

Original line number	Diff line number	Diff line
		@@ -1612,7 +1612,9 @@ final class FragmentManagerImpl extends FragmentManager implements LayoutInflate
		final BackStackRecord bss = mBackStack.remove(last);
		SparseArray<Fragment> firstOutFragments = new SparseArray<Fragment>();
		SparseArray<Fragment> lastInFragments = new SparseArray<Fragment>();
		if (mCurState >= Fragment.CREATED) {
		bss.calculateBackFragments(firstOutFragments, lastInFragments);
		}
		bss.popFromBackStack(true, null, firstOutFragments, lastInFragments);
		reportBackStackChanged();
		} else {
		@@ -1659,9 +1661,11 @@ final class FragmentManagerImpl extends FragmentManager implements LayoutInflate
		final int LAST = states.size()-1;
		SparseArray<Fragment> firstOutFragments = new SparseArray<Fragment>();
		SparseArray<Fragment> lastInFragments = new SparseArray<Fragment>();
		if (mCurState >= Fragment.CREATED) {
		for (int i = 0; i <= LAST; i++) {
		states.get(i).calculateBackFragments(firstOutFragments, lastInFragments);
		}
		}
		BackStackRecord.TransitionState state = null;
		for (int i=0; i<=LAST; i++) {
		if (DEBUG) Log.v(TAG, "Popping back stack state: " + states.get(i));