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Diffstat (limited to 'docs/html/guide/topics/manifest/activity-element.jd')
| -rw-r--r-- | docs/html/guide/topics/manifest/activity-element.jd | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/docs/html/guide/topics/manifest/activity-element.jd b/docs/html/guide/topics/manifest/activity-element.jd index a8d7615..3c623f6 100644 --- a/docs/html/guide/topics/manifest/activity-element.jd +++ b/docs/html/guide/topics/manifest/activity-element.jd @@ -453,7 +453,7 @@ Similarly, a new instance of a "{@code singleTop}" activity may also be created to handle a new intent. However, if the target task already has an existing instance of the activity at the top of its stack, that instance will receive the new intent (in an -<code>{@link android.app.Activity#onNewIntent onNewIntent()}</code> call); +{@link android.app.Activity#onNewIntent onNewIntent()} call); a new instance is not created. In other circumstances — for example, if an existing instance of the "{@code singleTop}" activity is in the target task, but not at the top of @@ -461,6 +461,22 @@ the stack, or if it's at the top of a stack, but not in the target task — a new instance would be created and pushed on the stack. </p> +<p>Similarly, if you +<a href="{@docRoot}training/implementing-navigation/ancestral.html">navigate +up</a> to an activity on the current stack, the behavior is determined by the +parent activity's launch mode. If the parent activity has launch mode {@code +singleTop} (or the <code>up</code> intent contains {@link +android.content.Intent#FLAG_ACTIVITY_CLEAR_TOP}), the parent is brought to the +top of the stack, and its state is preserved. The navigation intent is received +by the parent activity's {@link android.app.Activity#onNewIntent onNewIntent()} +method. If the parent activity has launch mode {@code standard} (and the +<code>up</code> intent does not contain {@link +android.content.Intent#FLAG_ACTIVITY_CLEAR_TOP}), the current activity and its +parent are both popped off the stack, and a new instance of the parent activity +is created to receive the navigation intent. +</p> + + <p> The "{@code singleTask}" and "{@code singleInstance}" modes also differ from each other in only one respect: A "{@code singleTask}" activity allows other |