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Performance: Keep reference to sharedPreferences.

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So far, we opened the SharedPreferences very often, which is very slow; also happened in the UI thread a lot.

Fixes #642.
This commit is contained in:
Dennis Guse
2021-03-15 12:01:32 +01:00
committed by GitHub
parent eebc33f60c
commit 15fbd90ca4
39 changed files with 355 additions and 344 deletions
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src/main/java/de/dennisguse/opentracks/content/TrackDataHub.java
+10 -5
View File
@@ -71,6 +71,8 @@ public class TrackDataHub implements SharedPreferences.OnSharedPreferenceChangeL
private final ContentProviderUtils contentProviderUtils;
private final int targetNumPoints;
private SharedPreferences sharedPreferences;
private boolean started;
private HandlerThread handlerThread;
private Handler handler;
@@ -140,8 +142,10 @@ public class TrackDataHub implements SharedPreferences.OnSharedPreferenceChangeL
contentResolver.registerContentObserver(TrackPointsColumns.CONTENT_URI_BY_ID, false, trackPointsTableObserver);
PreferencesUtils.register(context, this);
onSharedPreferenceChanged(null, null);
sharedPreferences = PreferencesUtils.getSharedPreferences(context);
sharedPreferences.registerOnSharedPreferenceChangeListener(this);
onSharedPreferenceChanged(sharedPreferences, null);
handler.post(() -> {
if (started) {
loadDataForAll();
@@ -155,7 +159,8 @@ public class TrackDataHub implements SharedPreferences.OnSharedPreferenceChangeL
return;
}
PreferencesUtils.unregister(context, this);
sharedPreferences.unregisterOnSharedPreferenceChangeListener(this);
sharedPreferences = null;
started = false;
@@ -224,10 +229,10 @@ public class TrackDataHub implements SharedPreferences.OnSharedPreferenceChangeL
public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, final String key) {
handler.post(() -> {
if (PreferencesUtils.isKey(context, R.string.recording_track_id_key, key)) {
recordingTrackId = PreferencesUtils.getRecordingTrackId(context);
recordingTrackId = PreferencesUtils.getRecordingTrackId(sharedPreferences, context);
}
if (PreferencesUtils.isKey(context, R.string.recording_track_paused_key, key)) {
recordingTrackPaused = PreferencesUtils.isRecordingTrackPaused(context);
recordingTrackPaused = PreferencesUtils.isRecordingTrackPaused(sharedPreferences, context);
}
});
}