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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
Download Patch File Download Diff File Expand all files Collapse all files
src/main/java/de/dennisguse/opentracks/fragments/ChartFragment.java
+19 -15
View File
@@ -65,31 +65,28 @@ public class ChartFragment extends Fragment implements TrackDataListener {
return chartFragment;
}
private final List<ChartPoint> pendingPoints = new ArrayList<>();
private SharedPreferences sharedPreferences;
private int recordingDistanceInterval;
private TrackDataHub trackDataHub;
// Stats gathered from the received data
private TrackStatisticsUpdater trackStatisticsUpdater = new TrackStatisticsUpdater();
private ChartBinding viewBinding;
//TODO REMOVE: Used to restore the TrackStatistics via TrackStatisticsUpdater; for the diagrams we should consider not this setting and just use all data that is in the database
@Deprecated
private int recordingDistanceInterval;
private final List<ChartPoint> pendingPoints = new ArrayList<>();
private String category = "";
// Modes of operation
private boolean chartByDistance;
private ChartBinding viewBinding;
// UI elements
private ChartView chartView;
private final SharedPreferences.OnSharedPreferenceChangeListener sharedPreferenceChangeListener = new SharedPreferences.OnSharedPreferenceChangeListener() {
@Override
public void onSharedPreferenceChanged(SharedPreferences preferences, String key) {
public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, String key) {
if (PreferencesUtils.isKey(getContext(), R.string.stats_units_key, key)) {
boolean metricUnits = PreferencesUtils.isMetricUnits(getContext());
boolean metricUnits = PreferencesUtils.isMetricUnits(sharedPreferences, getContext());
if (metricUnits != chartView.getMetricUnits()) {
chartView.setMetricUnits(metricUnits);
runOnUiThread(() -> {
@@ -100,7 +97,7 @@ public class ChartFragment extends Fragment implements TrackDataListener {
}
}
if (PreferencesUtils.isKey(getContext(), R.string.stats_rate_key, key)) {
boolean reportSpeed = PreferencesUtils.isReportSpeed(getContext(), category);
boolean reportSpeed = PreferencesUtils.isReportSpeed(sharedPreferences, getContext(), category);
if (reportSpeed != chartView.getReportSpeed()) {
chartView.setReportSpeed(reportSpeed);
chartView.applyReportSpeed();
@@ -114,7 +111,7 @@ public class ChartFragment extends Fragment implements TrackDataListener {
}
if (PreferencesUtils.isKey(getContext(), R.string.recording_distance_interval_key, key)) {
recordingDistanceInterval = PreferencesUtils.getRecordingDistanceInterval(getContext());
recordingDistanceInterval = PreferencesUtils.getRecordingDistanceInterval(sharedPreferences, getContext());
}
}
};
@@ -165,8 +162,9 @@ public class ChartFragment extends Fragment implements TrackDataListener {
public void onResume() {
super.onResume();
resumeTrackDataHub();
PreferencesUtils.register(getContext(), sharedPreferenceChangeListener);
sharedPreferenceChangeListener.onSharedPreferenceChanged(null, null);
sharedPreferences = PreferencesUtils.getSharedPreferences(getContext());
sharedPreferences.registerOnSharedPreferenceChangeListener(sharedPreferenceChangeListener);
sharedPreferenceChangeListener.onSharedPreferenceChanged(sharedPreferences, null);
checkChartSettings();
getActivity().runOnUiThread(updateChart);
@@ -176,7 +174,7 @@ public class ChartFragment extends Fragment implements TrackDataListener {
public void onPause() {
super.onPause();
pauseTrackDataHub();
PreferencesUtils.unregister(getContext(), sharedPreferenceChangeListener);
sharedPreferences.unregisterOnSharedPreferenceChangeListener(sharedPreferenceChangeListener);
}
@Override
@@ -192,6 +190,12 @@ public class ChartFragment extends Fragment implements TrackDataListener {
viewBinding = null;
}
@Override
public void onDestroy() {
super.onDestroy();
sharedPreferences = null;
}
@Override
public void onTrackUpdated(Track track) {
if (isResumed()) {
@@ -201,7 +205,7 @@ public class ChartFragment extends Fragment implements TrackDataListener {
}
category = track.getCategory();
boolean reportSpeed = PreferencesUtils.isReportSpeed(getContext(), category);
boolean reportSpeed = PreferencesUtils.isReportSpeed(PreferencesUtils.getSharedPreferences(getContext()), getContext(), category);
if (reportSpeed != chartView.getReportSpeed()) {
chartView.setReportSpeed(reportSpeed);
chartView.applyReportSpeed();