Unload widget previews when launcher is not visible
Can save ~1-2MB of RAM
Bug #5104303
Change-Id: I992bec33052f4d2c201e528b5edf384d05960e71
diff --git a/src/com/android/launcher2/AppsCustomizePagedView.java b/src/com/android/launcher2/AppsCustomizePagedView.java
index 0189d6c..ca02e1e 100644
--- a/src/com/android/launcher2/AppsCustomizePagedView.java
+++ b/src/com/android/launcher2/AppsCustomizePagedView.java
@@ -393,15 +393,17 @@
mWidgetSpacingLayout.measure(widthSpec, heightSpec);
mContentWidth = mWidgetSpacingLayout.getContentWidth();
+ AppsCustomizeTabHost host = (AppsCustomizeTabHost) getTabHost();
+ final boolean hostIsTransitioning = host.isTransitioning();
+
// Restore the page
int page = getPageForComponent(mSaveInstanceStateItemIndex);
- invalidatePageData(Math.max(0, page));
+ invalidatePageData(Math.max(0, page), hostIsTransitioning);
// Show All Apps cling if we are finished transitioning, otherwise, we will try again when
// the transition completes in AppsCustomizeTabHost (otherwise the wrong offsets will be
// returned while animating)
- AppsCustomizeTabHost host = (AppsCustomizeTabHost) getTabHost();
- if (!host.isTransitioning()) {
+ if (!hostIsTransitioning) {
post(new Runnable() {
@Override
public void run() {
@@ -662,6 +664,18 @@
cancelAllTasks();
}
+ public void clearAllWidgetPages() {
+ cancelAllTasks();
+ int count = getChildCount();
+ for (int i = 0; i < count; i++) {
+ View v = getPageAt(i);
+ if (v instanceof PagedViewGridLayout) {
+ ((PagedViewGridLayout) v).removeAllViewsOnPage();
+ mDirtyPageContent.set(i, true);
+ }
+ }
+ }
+
private void cancelAllTasks() {
// Clean up all the async tasks
Iterator<AppsCustomizeAsyncTask> iter = mRunningTasks.iterator();
diff --git a/src/com/android/launcher2/AppsCustomizeTabHost.java b/src/com/android/launcher2/AppsCustomizeTabHost.java
index 778d6bc..2963240 100644
--- a/src/com/android/launcher2/AppsCustomizeTabHost.java
+++ b/src/com/android/launcher2/AppsCustomizeTabHost.java
@@ -366,6 +366,11 @@
}
mContent.setVisibility(VISIBLE);
+ if (!toWorkspace) {
+ // Make sure the current page is loaded (we start loading the side pages after the
+ // transition to prevent slowing down the animation)
+ mAppsCustomizePane.loadAssociatedPages(mAppsCustomizePane.getCurrentPage(), true);
+ }
if (animated && !delayLauncherTransitionUntilLayout) {
enableAndBuildHardwareLayer();
}
@@ -391,6 +396,9 @@
// Dismiss the workspace cling and show the all apps cling (if not already shown)
l.dismissWorkspaceCling(null);
mAppsCustomizePane.showAllAppsCling();
+ // Make sure adjacent pages are loaded (we wait until after the transition to
+ // prevent slowing down the animation)
+ mAppsCustomizePane.loadAssociatedPages(mAppsCustomizePane.getCurrentPage());
if (!LauncherApplication.isScreenLarge()) {
mAppsCustomizePane.hideScrollingIndicator(false);
@@ -398,6 +406,23 @@
}
}
+ public void onResume() {
+ if (getVisibility() == VISIBLE) {
+ mContent.setVisibility(VISIBLE);
+ // We unload the widget previews when the UI is hidden, so need to reload pages
+ // Load the current page synchronously, and the neighboring pages asynchronously
+ mAppsCustomizePane.loadAssociatedPages(mAppsCustomizePane.getCurrentPage(), true);
+ mAppsCustomizePane.loadAssociatedPages(mAppsCustomizePane.getCurrentPage());
+ }
+ }
+
+ public void onTrimMemory() {
+ mContent.setVisibility(GONE);
+ // Clear the widget pages of all their subviews - this will trigger the widget previews
+ // to delete their bitmaps
+ mAppsCustomizePane.clearAllWidgetPages();
+ }
+
boolean isTransitioning() {
return mInTransition;
}
diff --git a/src/com/android/launcher2/Launcher.java b/src/com/android/launcher2/Launcher.java
index 6ea14db..c917aec 100644
--- a/src/com/android/launcher2/Launcher.java
+++ b/src/com/android/launcher2/Launcher.java
@@ -36,6 +36,7 @@
import android.content.BroadcastReceiver;
import android.content.ClipData;
import android.content.ClipDescription;
+import android.content.ComponentCallbacks2;
import android.content.ComponentName;
import android.content.ContentResolver;
import android.content.Context;
@@ -563,6 +564,7 @@
// When we resume Launcher, a different Activity might be responsible for the app
// market intent, so refresh the icon
updateAppMarketIcon();
+ mAppsCustomizeTabHost.onResume();
if (!mWorkspaceLoading) {
final ViewTreeObserver observer = mWorkspace.getViewTreeObserver();
final Workspace workspace = mWorkspace;
@@ -2397,6 +2399,14 @@
}
}
+ @Override
+ public void onTrimMemory(int level) {
+ super.onTrimMemory(level);
+ if (level == ComponentCallbacks2.TRIM_MEMORY_UI_HIDDEN) {
+ mAppsCustomizeTabHost.onTrimMemory();
+ }
+ }
+
void showWorkspace(boolean animated) {
Resources res = getResources();
int stagger = res.getInteger(R.integer.config_appsCustomizeWorkspaceAnimationStagger);
diff --git a/src/com/android/launcher2/PagedView.java b/src/com/android/launcher2/PagedView.java
index ba303a1..3f5652e 100644
--- a/src/com/android/launcher2/PagedView.java
+++ b/src/com/android/launcher2/PagedView.java
@@ -143,7 +143,7 @@
private PageSwitchListener mPageSwitchListener;
- private ArrayList<Boolean> mDirtyPageContent;
+ protected ArrayList<Boolean> mDirtyPageContent;
// choice modes
protected static final int CHOICE_MODE_NONE = 0;
diff --git a/src/com/android/launcher2/PagedViewGridLayout.java b/src/com/android/launcher2/PagedViewGridLayout.java
index 5c32e09..b1b6215 100644
--- a/src/com/android/launcher2/PagedViewGridLayout.java
+++ b/src/com/android/launcher2/PagedViewGridLayout.java
@@ -68,6 +68,12 @@
heightMeasureSpec);
}
+ @Override
+ protected void onDetachedFromWindow() {
+ super.onDetachedFromWindow();
+ mOnLayoutListener = null;
+ }
+
public void setOnLayoutListener(Runnable r) {
mOnLayoutListener = r;
}