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Added check for backStackEntryCount before trying to read the first entry.

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This commit is contained in:
Rossen Hristov
2015-10-08 11:14:08 +03:00
parent 87d2943f6c
commit 02748f4fc0
1 changed files with 7 additions and 4 deletions
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11
ui/frame/frame.android.ts
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@ -234,7 +234,8 @@ export class Frame extends frameCommon.Frame {
// Clear history // Clear history
if (backstackEntry.entry.clearHistory && !this._isFirstNavigation) { if (backstackEntry.entry.clearHistory && !this._isFirstNavigation) {
var i = manager.getBackStackEntryCount() - 1; var backStackEntryCount = manager.getBackStackEntryCount();
var i = backStackEntryCount - 1;
var fragment: android.app.Fragment; var fragment: android.app.Fragment;
while (i >= 0) { while (i >= 0) {
fragment = manager.findFragmentByTag(manager.getBackStackEntryAt(i--).getName()); fragment = manager.findFragmentByTag(manager.getBackStackEntryAt(i--).getName());
@ -251,9 +252,11 @@ export class Frame extends frameCommon.Frame {
} }
} }
var firstEntryName = manager.getBackStackEntryAt(0).getName(); if (backStackEntryCount) {
trace.write(`manager.popBackStack(${firstEntryName}, android.app.FragmentManager.POP_BACK_STACK_INCLUSIVE);`, trace.categories.NativeLifecycle); var firstEntryName = manager.getBackStackEntryAt(0).getName();
manager.popBackStack(firstEntryName, android.app.FragmentManager.POP_BACK_STACK_INCLUSIVE); trace.write(`manager.popBackStack(${firstEntryName}, android.app.FragmentManager.POP_BACK_STACK_INCLUSIVE);`, trace.categories.NativeLifecycle);
manager.popBackStack(firstEntryName, android.app.FragmentManager.POP_BACK_STACK_INCLUSIVE);
}
this._currentEntry = null; this._currentEntry = null;
navDepth = -1; navDepth = -1;
} }