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Reduce jank in the wifi detail status page.

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Currently, when anything changes, the wifi detail status page
removes and then redraws all IP address information. This causes
the whole screen to flicker. Instead, only add and remove things
when they actually change.

In order to do this, convert the IPv6 addresses from a list of
Preference objects to a single newline-separated text field.
This removes the need to keep track of addresses as they are
added and deleted, and also looks a bit better.

Also, minor correctness fixes:
- Get the gateway from the default route, not from the last route
  with a non-null gateway.
- Get the IPv4 subnet mask from the IPv4 address prefix, not from
  the last route with prefix length > 0.

Bug: 62171690
Test: make -j64 RunSettingsRoboTests
Test: IP information does not flicker when signal strength changes
Change-Id: Ia9f2a277e53a2800407ae327701c5b95a9eec20a
This commit is contained in:
Lorenzo Colitti
2017-05-02 12:06:32 +09:00
parent 8b1926888f
commit 0bde06cd59
4 changed files with 89 additions and 96 deletions
Download Patch File Download Diff File Expand all files Collapse all files

116
src/com/android/settings/wifi/details/WifiDetailPreferenceController.java
View File

@@ -27,6 +27,7 @@ import android.graphics.drawable.Drawable;
import android.net.ConnectivityManager;
import android.net.ConnectivityManager.NetworkCallback;
import android.net.IpPrefix;
import android.net.LinkAddress;
import android.net.LinkProperties;
import android.net.Network;
import android.net.NetworkBadging;
@@ -67,6 +68,7 @@ import java.net.InetAddress;
import java.net.UnknownHostException;
import java.util.List;
import java.util.StringJoiner;
import java.util.stream.Collectors;
/**
* Controller for logic pertaining to displaying Wifi information for the
@@ -100,7 +102,9 @@ public class WifiDetailPreferenceController extends PreferenceController impleme
@VisibleForTesting
static final String KEY_DNS_PREF = "dns";
@VisibleForTesting
static final String KEY_IPV6_ADDRESS_CATEGORY = "ipv6_details_category";
static final String KEY_IPV6_CATEGORY = "ipv6_category";
@VisibleForTesting
static final String KEY_IPV6_ADDRESSES_PREF = "ipv6_addresses";
private AccessPoint mAccessPoint;
private final ConnectivityManagerWrapper mConnectivityManagerWrapper;
@@ -133,8 +137,9 @@ public class WifiDetailPreferenceController extends PreferenceController impleme
private WifiDetailPreference mGatewayPref;
private WifiDetailPreference mSubnetPref;
private WifiDetailPreference mDnsPref;
private PreferenceCategory mIpv6Category;
private Preference mIpv6AddressPref;
private PreferenceCategory mIpv6AddressCategory;
private final IntentFilter mFilter;
private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
@Override
@@ -241,8 +246,8 @@ public class WifiDetailPreferenceController extends PreferenceController impleme
mSubnetPref = (WifiDetailPreference) screen.findPreference(KEY_SUBNET_MASK_PREF);
mDnsPref = (WifiDetailPreference) screen.findPreference(KEY_DNS_PREF);
mIpv6AddressCategory =
(PreferenceCategory) screen.findPreference(KEY_IPV6_ADDRESS_CATEGORY);
mIpv6Category = (PreferenceCategory) screen.findPreference(KEY_IPV6_CATEGORY);
mIpv6AddressPref = (Preference) screen.findPreference(KEY_IPV6_ADDRESSES_PREF);
mSecurityPref.setDetailText(mAccessPoint.getSecurityString(false /* concise */));
mForgetButton = (Button) mButtonsPref.findViewById(R.id.left_button);
@@ -315,8 +320,6 @@ public class WifiDetailPreferenceController extends PreferenceController impleme
mFrequencyPref.setDetailText(band);
updateIpLayerInfo();
mButtonsPref.setVisible(mForgetButton.getVisibility() == View.VISIBLE
|| mSignInButton.getVisibility() == View.VISIBLE);
}
private void exitActivity() {
@@ -348,74 +351,69 @@ public class WifiDetailPreferenceController extends PreferenceController impleme
mSignalStrengthPref.setDetailText(mSignalStr[summarySignalLevel]);
}
private void updatePreference(WifiDetailPreference pref, String detailText) {
if (!TextUtils.isEmpty(detailText)) {
pref.setDetailText(detailText);
pref.setVisible(true);
} else {
pref.setVisible(false);
}
}
private void updateIpLayerInfo() {
mSignInButton.setVisibility(canSignIntoNetwork() ? View.VISIBLE : View.INVISIBLE);
// Reset all fields
mIpv6AddressCategory.removeAll();
mIpv6AddressCategory.setVisible(false);
mIpAddressPref.setVisible(false);
mSubnetPref.setVisible(false);
mGatewayPref.setVisible(false);
mDnsPref.setVisible(false);
mButtonsPref.setVisible(mForgetButton.getVisibility() == View.VISIBLE
|| mSignInButton.getVisibility() == View.VISIBLE);
if (mNetwork == null || mLinkProperties == null) {
mIpAddressPref.setVisible(false);
mSubnetPref.setVisible(false);
mGatewayPref.setVisible(false);
mDnsPref.setVisible(false);
mIpv6Category.setVisible(false);
return;
}
List<InetAddress> addresses = mLinkProperties.getAddresses();
// Set IPv4 and IPv6 addresses
for (int i = 0; i < addresses.size(); i++) {
InetAddress addr = addresses.get(i);
if (addr instanceof Inet4Address) {
mIpAddressPref.setDetailText(addr.getHostAddress());
mIpAddressPref.setVisible(true);
} else if (addr instanceof Inet6Address) {
String ip = addr.getHostAddress();
Preference pref = new Preference(mPrefContext);
pref.setKey(ip);
pref.setTitle(ip);
pref.setSelectable(false);
mIpv6AddressCategory.addPreference(pref);
mIpv6AddressCategory.setVisible(true);
}
}
// Set up IPv4 gateway and subnet mask
String gateway = null;
// Find IPv4 and IPv6 addresses.
String ipv4Address = null;
String subnet = null;
StringJoiner ipv6Addresses = new StringJoiner("\n");
for (LinkAddress addr : mLinkProperties.getLinkAddresses()) {
if (addr.getAddress() instanceof Inet4Address) {
ipv4Address = addr.getAddress().getHostAddress();
subnet = ipv4PrefixLengthToSubnetMask(addr.getPrefixLength());
} else if (addr.getAddress() instanceof Inet6Address) {
ipv6Addresses.add(addr.getAddress().getHostAddress());
}
}
// Find IPv4 default gateway.
String gateway = null;
for (RouteInfo routeInfo : mLinkProperties.getRoutes()) {
if (routeInfo.hasGateway() && routeInfo.getGateway() instanceof Inet4Address) {
if (routeInfo.isIPv4Default() && routeInfo.hasGateway()) {
gateway = routeInfo.getGateway().getHostAddress();
}
IpPrefix ipPrefix = routeInfo.getDestination();
if (ipPrefix != null && ipPrefix.getAddress() instanceof Inet4Address
&& ipPrefix.getPrefixLength() > 0) {
subnet = ipv4PrefixLengthToSubnetMask(ipPrefix.getPrefixLength());
break;
}
}
if (!TextUtils.isEmpty(subnet)) {
mSubnetPref.setDetailText(subnet);
mSubnetPref.setVisible(true);
}
// Find IPv4 DNS addresses.
String dnsServers = mLinkProperties.getDnsServers().stream()
.filter(Inet4Address.class::isInstance)
.map(InetAddress::getHostAddress)
.collect(Collectors.joining(","));
if (!TextUtils.isEmpty(gateway)) {
mGatewayPref.setDetailText(gateway);
mGatewayPref.setVisible(true);
}
// Update UI.
updatePreference(mIpAddressPref, ipv4Address);
updatePreference(mSubnetPref, subnet);
updatePreference(mGatewayPref, gateway);
updatePreference(mDnsPref, dnsServers);
// Set IPv4 DNS addresses
StringJoiner stringJoiner = new StringJoiner(",");
for (InetAddress dnsServer : mLinkProperties.getDnsServers()) {
if (dnsServer instanceof Inet4Address) {
stringJoiner.add(dnsServer.getHostAddress());
}
}
String dnsText = stringJoiner.toString();
if (!dnsText.isEmpty()) {
mDnsPref.setDetailText(dnsText);
mDnsPref.setVisible(true);
if (ipv6Addresses.length() > 0) {
mIpv6AddressPref.setSummary(ipv6Addresses.toString());
mIpv6Category.setVisible(true);
} else {
mIpv6Category.setVisible(false);
}
}