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Merge "Fix bug #16660405 Stability: ISE in Settings: Observer ... com.android.settings.SettingsPreferenceFragment$1@3c1d9ecb was not registered" into lmp-dev

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This commit is contained in:
Fabrice Di Meglio
2014-07-29 23:07:27 +00:00
committed by Android (Google) Code Review
parent 01daaca547 7c435f6b44
commit 76307f52d0
1 changed files with 11 additions and 6 deletions
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17
src/com/android/settings/SettingsPreferenceFragment.java
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@@ -66,6 +66,7 @@ public class SettingsPreferenceFragment extends PreferenceFragment implements Di
private boolean mPreferenceHighlighted = false;
private Drawable mHighlightDrawable;
private Object mRegisterLock = new Object();
private boolean mIsDataSetObserverRegistered = false;
private DataSetObserver mDataSetObserver = new DataSetObserver() {
@Override
@@ -153,16 +154,20 @@ public class SettingsPreferenceFragment extends PreferenceFragment implements Di
}
public void registerObserverIfNeeded() {
if (!mIsDataSetObserverRegistered) {
getPreferenceScreen().getRootAdapter().registerDataSetObserver(mDataSetObserver);
mIsDataSetObserverRegistered = true;
synchronized (mRegisterLock) {
if (!mIsDataSetObserverRegistered) {
getPreferenceScreen().getRootAdapter().registerDataSetObserver(mDataSetObserver);
mIsDataSetObserverRegistered = true;
}
}
}
public void unregisterObserverIfNeeded() {
if (mIsDataSetObserverRegistered) {
getPreferenceScreen().getRootAdapter().unregisterDataSetObserver(mDataSetObserver);
mIsDataSetObserverRegistered = false;
synchronized (mRegisterLock) {
if (mIsDataSetObserverRegistered) {
getPreferenceScreen().getRootAdapter().unregisterDataSetObserver(mDataSetObserver);
mIsDataSetObserverRegistered = false;
}
}
}