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Correct error in Configuration.updateFrom

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When updating the non direction members of screenLayout
we check that they are not in total undefined, before
accepting the new value in full. This was enough for LONG/SIZE
which are always undefined or set together. It seems we have paths
now where SCREENLAYOUT_ROUND however can be undefined and the others
will be set. In this case if we pass a configuration with SCREENLAYOUT_ROUND_UNDEFINED
but LONG/SIZE set to updateFrom then we will overwrite our previous SCREENLAYOUT_ROUND value.
This triggers extra configuration changes.

Bug: 33098677
Test: bit FrameworksCoreTests:android.content.res.ConfigurationTest
Change-Id: I6eb321d27011a2af2134d0ed5b6864d4cd902dc3
This commit is contained in:
Robert Carr
2016-12-05 20:33:10 -08:00
parent cac1d6a00b
commit 4647acb60e
2 changed files with 68 additions and 10 deletions
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31
core/java/android/content/res/Configuration.java
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@@ -1047,18 +1047,29 @@ public final class Configuration implements Parcelable, Comparable<Configuration
changed |= ActivityInfo.CONFIG_ORIENTATION;
orientation = delta.orientation;
}
if (getScreenLayoutNoDirection(delta.screenLayout) !=
(SCREENLAYOUT_SIZE_UNDEFINED | SCREENLAYOUT_LONG_UNDEFINED)
&& (getScreenLayoutNoDirection(screenLayout) !=
getScreenLayoutNoDirection(delta.screenLayout))) {
if (((delta.screenLayout & SCREENLAYOUT_SIZE_MASK) != SCREENLAYOUT_SIZE_UNDEFINED)
&& (delta.screenLayout & SCREENLAYOUT_SIZE_MASK)
!= (screenLayout & SCREENLAYOUT_SIZE_MASK)) {
changed |= ActivityInfo.CONFIG_SCREEN_LAYOUT;
// We need to preserve the previous layout dir bits if they were defined
if ((delta.screenLayout&SCREENLAYOUT_LAYOUTDIR_MASK) == 0) {
screenLayout = (screenLayout&SCREENLAYOUT_LAYOUTDIR_MASK)|delta.screenLayout;
} else {
screenLayout = delta.screenLayout;
}
screenLayout = (screenLayout & ~SCREENLAYOUT_SIZE_MASK)
| (delta.screenLayout & SCREENLAYOUT_SIZE_MASK);
}
if (((delta.screenLayout & SCREENLAYOUT_LONG_MASK) != SCREENLAYOUT_LONG_UNDEFINED)
&& (delta.screenLayout & SCREENLAYOUT_LONG_MASK)
!= (screenLayout & SCREENLAYOUT_LONG_MASK)) {
changed |= ActivityInfo.CONFIG_SCREEN_LAYOUT;
screenLayout = (screenLayout & ~SCREENLAYOUT_LONG_MASK)
| (delta.screenLayout & SCREENLAYOUT_LONG_MASK);
}
if (((delta.screenLayout & SCREENLAYOUT_ROUND_MASK) != SCREENLAYOUT_ROUND_UNDEFINED)
&& (delta.screenLayout & SCREENLAYOUT_ROUND_MASK)
!= (screenLayout & SCREENLAYOUT_ROUND_MASK)) {
changed |= ActivityInfo.CONFIG_SCREEN_LAYOUT;
screenLayout = (screenLayout & ~SCREENLAYOUT_ROUND_MASK)
| (delta.screenLayout & SCREENLAYOUT_ROUND_MASK);
}
if (delta.uiMode != (UI_MODE_TYPE_UNDEFINED|UI_MODE_NIGHT_UNDEFINED)
&& uiMode != delta.uiMode) {
changed |= ActivityInfo.CONFIG_UI_MODE;