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Enqueue cached layout inflation on background thread.

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This commit is contained in:
Alan Evans
2020-11-30 13:21:20 -04:00
committed by GitHub
parent 7efd8be238
commit 221cf56ddc
1 changed files with 23 additions and 8 deletions
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31
app/src/main/java/org/thoughtcrime/securesms/util/CachedInflater.java
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@@ -13,12 +13,15 @@ import androidx.annotation.Nullable;
import androidx.asynclayoutinflater.view.AsyncLayoutInflater;
import org.thoughtcrime.securesms.logging.Log;
import org.thoughtcrime.securesms.util.concurrent.SerialExecutor;
import org.thoughtcrime.securesms.util.concurrent.SignalExecutors;
import java.util.Collections;
import java.util.HashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.concurrent.Executor;
/**
* A class that can be used to pre-cache layouts. Usage flow:
@@ -81,7 +84,8 @@ public class CachedInflater {
private static class ViewCache {
private static final ViewCache INSTANCE = new ViewCache();
private static final ViewCache INSTANCE = new ViewCache();
private static final Executor ENQUEUING_EXECUTOR = new SerialExecutor(SignalExecutors.BOUNDED);
private final Map<Integer, List<View>> cache = new HashMap<>();
@@ -107,12 +111,19 @@ public class CachedInflater {
AsyncLayoutInflater inflater = new AsyncLayoutInflater(context);
int existingCount = Util.getOrDefault(cache, layoutRes, Collections.emptyList()).size();
int inflateCount = Math.max(limit - existingCount, 0);
int existingCount = Util.getOrDefault(cache, layoutRes, Collections.emptyList()).size();
int inflateCount = Math.max(limit - existingCount, 0);
long enqueueTime = System.currentTimeMillis();
for (int i = 0; i < inflateCount; i++) {
final long enqueueTime = System.currentTimeMillis();
inflater.inflate(layoutRes, parent, (view, resId, p) -> {
// Calling AsyncLayoutInflator#inflate can block the calling thread when there's a large number of requests.
// The method is annotated @UiThread, but unnecessarily so.
ENQUEUING_EXECUTOR.execute(() -> {
if (enqueueTime < lastClearTime) {
Log.d(TAG, "Prefetch is no longer valid. Ignoring " + inflateCount + " inflates.");
return;
}
AsyncLayoutInflater.OnInflateFinishedListener onInflateFinishedListener = (view, resId, p) -> {
Util.assertMainThread();
if (enqueueTime < lastClearTime) {
Log.d(TAG, "Prefetch is no longer valid. Ignoring.");
@@ -125,8 +136,12 @@ public class CachedInflater {
views.add(view);
cache.put(resId, views);
});
}
};
for (int i = 0; i < inflateCount; i++) {
inflater.inflate(layoutRes, parent, onInflateFinishedListener);
}
});
}
@MainThread