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Reduce jank in wifi settings

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- Fix view recycling for AccessPointPreferences by adding a dummy
   during initial inflation
 - Cut down on what is done during onBindView and refresh()
 - Try to re-use AccessPointPreferences when possible

Some jank still occurs when scan results come in, but it is less
than before.

Bug: 16518752
Change-Id: I2619303281dd50aa3864783c49738ae9f221834a
This commit is contained in:
Jason Monk
2015-06-29 13:28:21 -04:00
parent 52dce9d334
commit 55dd8869db
4 changed files with 79 additions and 47 deletions
Download Patch File Download Diff File Expand all files Collapse all files

89
src/com/android/settings/wifi/AccessPointPreference.java
View File

@@ -16,12 +16,15 @@
package com.android.settings.wifi;
import android.content.Context;
import android.content.pm.PackageManager;
import android.graphics.drawable.Drawable;
import android.graphics.drawable.StateListDrawable;
import android.net.wifi.WifiConfiguration;
import android.os.Looper;
import android.os.UserHandle;
import android.preference.Preference;
import android.util.AttributeSet;
import android.util.SparseArray;
import android.view.View;
import android.widget.TextView;
@@ -37,22 +40,39 @@ public class AccessPointPreference extends Preference {
private static int[] wifi_signal_attributes = { R.attr.wifi_signal };
private final StateListDrawable mWifiSld;
private final int mBadgePadding;
private final UserBadgeCache mBadgeCache;
private TextView mTitleView;
private TextView mSummaryView;
private boolean mShowSummary = true;
private boolean mForSavedNetworks = false;
private AccessPoint mAccessPoint;
private Drawable mBadge;
private int mBadgePadding;
private int mLevel;
public AccessPointPreference(AccessPoint accessPoint, Context context,
// Used for dummy pref.
public AccessPointPreference(Context context, AttributeSet attrs) {
super(context, attrs);
mWifiSld = null;
mBadgePadding = 0;
mBadgeCache = null;
}
public AccessPointPreference(AccessPoint accessPoint, Context context, UserBadgeCache cache,
boolean forSavedNetworks) {
super(context);
mBadgeCache = cache;
mAccessPoint = accessPoint;
mForSavedNetworks = forSavedNetworks;
mAccessPoint.setTag(this);
mLevel = -1;
mWifiSld = (StateListDrawable) context.getTheme()
.obtainStyledAttributes(wifi_signal_attributes).getDrawable(0);
// Distance from the end of the title at which this AP's user badge should sit.
mBadgePadding = context.getResources()
.getDimensionPixelSize(R.dimen.wifi_preference_badge_padding);
refresh();
}
@@ -63,6 +83,10 @@ public class AccessPointPreference extends Preference {
@Override
protected void onBindView(View view) {
super.onBindView(view);
if (mAccessPoint == null) {
// Used for dummy pref.
return;
}
Drawable drawable = getIcon();
if (drawable != null) {
drawable.setLevel(mLevel);
@@ -74,11 +98,6 @@ public class AccessPointPreference extends Preference {
mTitleView.setCompoundDrawablesRelativeWithIntrinsicBounds(null, null, mBadge, null);
mTitleView.setCompoundDrawablePadding(mBadgePadding);
}
mSummaryView = (TextView) view.findViewById(com.android.internal.R.id.summary);
mSummaryView.setVisibility(mShowSummary ? View.VISIBLE : View.GONE);
updateBadge(getContext());
}
protected void updateIcon(int level, Context context) {
@@ -88,15 +107,13 @@ public class AccessPointPreference extends Preference {
if (getIcon() == null) {
// To avoid a drawing race condition, we first set the state (SECURE/NONE) and then
// set the icon (drawable) to that state's drawable.
StateListDrawable sld = (StateListDrawable) context.getTheme()
.obtainStyledAttributes(wifi_signal_attributes).getDrawable(0);
// If sld is null then we are indexing and therefore do not have access to
// (nor need to display) the drawable.
if (sld != null) {
sld.setState((mAccessPoint.getSecurity() != AccessPoint.SECURITY_NONE)
if (mWifiSld != null) {
mWifiSld.setState((mAccessPoint.getSecurity() != AccessPoint.SECURITY_NONE)
? STATE_SECURED
: STATE_NONE);
Drawable drawable = sld.getCurrent();
Drawable drawable = mWifiSld.getCurrent();
if (!mForSavedNetworks) {
setIcon(drawable);
} else {
@@ -111,12 +128,9 @@ public class AccessPointPreference extends Preference {
WifiConfiguration config = mAccessPoint.getConfig();
if (config != null) {
// Fetch badge (may be null)
UserHandle creatorUser = new UserHandle(UserHandle.getUserId(config.creatorUid));
mBadge = context.getPackageManager().getUserBadgeForDensity(creatorUser, 0 /* dpi */);
// Distance from the end of the title at which this AP's user badge should sit.
mBadgePadding = context.getResources()
.getDimensionPixelSize(R.dimen.wifi_preference_badge_padding);
// Get the badge using a cache since the PM will ask the UserManager for the list
// of profiles every time otherwise.
mBadge = mBadgeCache.getUserBadge(config.creatorUid);
}
}
@@ -139,20 +153,8 @@ public class AccessPointPreference extends Preference {
}
updateBadge(context);
// Force new summary
setSummary(null);
String summary = mForSavedNetworks ? mAccessPoint.getSavedNetworkSummary()
: mAccessPoint.getSettingsSummary();
boolean showSummary = summary.length() > 0;
if (showSummary) {
setSummary(summary);
}
if (showSummary != mShowSummary) {
mShowSummary = showSummary;
notifyChanged();
}
setSummary(mForSavedNetworks ? mAccessPoint.getSavedNetworkSummary()
: mAccessPoint.getSettingsSummary());
}
@Override
@@ -181,4 +183,23 @@ public class AccessPointPreference extends Preference {
notifyChanged();
}
};
public static class UserBadgeCache {
private final SparseArray<Drawable> mBadges = new SparseArray<>();
private final PackageManager mPm;
UserBadgeCache(PackageManager pm) {
mPm = pm;
}
private Drawable getUserBadge(int userId) {
int index = mBadges.indexOfKey(userId);
if (index < 0) {
Drawable badge = mPm.getUserBadgeForDensity(new UserHandle(userId), 0 /* dpi */);
mBadges.put(userId, badge);
return badge;
}
return mBadges.valueAt(index);
}
}
}