From 9fad6fc9616bc317f88433b136a79f41905134ff Mon Sep 17 00:00:00 2001 From: Michael Manganiello Date: Wed, 21 Sep 2022 01:47:38 -0300 Subject: Fix memory leak on ConnectivityManager (#1066) MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Leak found using LeakCanary. Steps: 1. Enable the LeakCanary dependency. 1. Open the app. 1. Go to the "All" tab. 1. Open any post, and go back to the post list. Leak trace: ``` 2022-09-04 17:56:05.904 32018-32018/ml.docilealligator.infinityforreddit.debug D/LeakCanary: ┬─── │ GC Root: System class │ ├─ android.net.ConnectivityManager class │ Leaking: NO (a class is never leaking) │ ↓ static ConnectivityManager.sInstance │ ~~~~~~~~~ ├─ android.net.ConnectivityManager instance │ Leaking: UNKNOWN │ Retaining 114 B in 5 objects │ mContext instance of ml.docilealligator.infinityforreddit.activities.ViewPostDetailActivity with mDestroyed = true │ ↓ ConnectivityManager.mContext │ ~~~~~~~~ ╰→ ml.docilealligator.infinityforreddit.activities.ViewPostDetailActivity instance Leaking: YES (ObjectWatcher was watching this because ml.docilealligator.infinityforreddit.activities. ViewPostDetailActivity received Activity#onDestroy() callback and Activity#mDestroyed is true) Retaining 1.8 MB in 27752 objects key = 22e99901-9689-4f70-b88c-092a4a7efad9 watchDurationMillis = 5518 retainedDurationMillis = 517 mApplication instance of ml.docilealligator.infinityforreddit.Infinity mBase instance of androidx.appcompat.view.ContextThemeWrapper ``` Solution based on [this StackOverflow answer](https://stackoverflow.com/a/41431693) --- .../main/java/ml/docilealligator/infinityforreddit/utils/Utils.java | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'app/src/main/java/ml/docilealligator/infinityforreddit') diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/utils/Utils.java b/app/src/main/java/ml/docilealligator/infinityforreddit/utils/Utils.java index 0819daac..ff65b536 100644 --- a/app/src/main/java/ml/docilealligator/infinityforreddit/utils/Utils.java +++ b/app/src/main/java/ml/docilealligator/infinityforreddit/utils/Utils.java @@ -279,7 +279,7 @@ public final class Utils { } public static int getConnectedNetwork(Context context) { - ConnectivityManager connMgr = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE); + ConnectivityManager connMgr = (ConnectivityManager) context.getApplicationContext().getSystemService(Context.CONNECTIVITY_SERVICE); if (connMgr != null) { if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) { Network nw = connMgr.getActiveNetwork(); @@ -326,7 +326,7 @@ public final class Utils { } public static boolean isConnectedToWifi(Context context) { - ConnectivityManager connMgr = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE); + ConnectivityManager connMgr = (ConnectivityManager) context.getApplicationContext().getSystemService(Context.CONNECTIVITY_SERVICE); if (connMgr != null) { if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) { Network nw = connMgr.getActiveNetwork(); @@ -347,7 +347,7 @@ public final class Utils { } public static boolean isConnectedToCellularData(Context context) { - ConnectivityManager connMgr = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE); + ConnectivityManager connMgr = (ConnectivityManager) context.getApplicationContext().getSystemService(Context.CONNECTIVITY_SERVICE); if (connMgr != null) { if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) { Network nw = connMgr.getActiveNetwork(); -- cgit v1.2.3