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Added links to scanning settings

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Bug: 19918721
Change-Id: Ifb1508807d34b675e9ea1522f86a9310ed6b663f
This commit is contained in:
Lifu Tang
2015-03-26 17:56:19 -07:00
parent 8019aa6b7b
commit be794c30ca
4 changed files with 168 additions and 20 deletions
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84
src/com/android/settings/LinkifyUtils.java Normal file
View File

@@ -0,0 +1,84 @@
/*
* Copyright (C) 2015 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.settings;
import android.text.Spannable;
import android.text.TextPaint;
import android.text.method.LinkMovementMethod;
import android.text.style.ClickableSpan;
import android.view.View;
import android.widget.TextView;
import android.widget.TextView.BufferType;
/**
* Utility class to create clickable links inside {@link TextView TextViews}.
*/
public class LinkifyUtils {
private static final String PLACE_HOLDER_LINK_BEGIN = "LINK_BEGIN";
private static final String PLACE_HOLDER_LINK_END = "LINK_END";
private LinkifyUtils() {
}
/** Interface that handles the click event of the link */
public interface OnClickListener {
void onClick();
}
/**
* Applies the text into the {@link TextView} and part of it a clickable link.
* The text surrounded with "LINK_BEGIN" and "LINK_END" will become a clickable link. Only
* supports at most one link.
* @return true if the link has been successfully applied, or false if the original text
* contains no link place holders.
*/
public static boolean linkify(TextView textView, StringBuilder text,
final OnClickListener listener) {
// Remove place-holders from the string and record their positions
final int beginIndex = text.indexOf(PLACE_HOLDER_LINK_BEGIN);
if (beginIndex == -1) {
textView.setText(text);
return false;
}
text.delete(beginIndex, beginIndex + PLACE_HOLDER_LINK_BEGIN.length());
final int endIndex = text.indexOf(PLACE_HOLDER_LINK_END);
if (endIndex == -1) {
textView.setText(text);
return false;
}
text.delete(endIndex, endIndex + PLACE_HOLDER_LINK_END.length());
textView.setText(text.toString(), BufferType.SPANNABLE);
textView.setMovementMethod(LinkMovementMethod.getInstance());
Spannable spannableContent = (Spannable) textView.getText();
ClickableSpan spannableLink = new ClickableSpan() {
@Override
public void onClick(View widget) {
listener.onClick();
}
@Override
public void updateDrawState(TextPaint ds) {
super.updateDrawState(ds);
ds.setUnderlineText(false);
}
};
spannableContent.setSpan(spannableLink, beginIndex, endIndex,
Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
return true;
}
}

37
src/com/android/settings/bluetooth/BluetoothSettings.java
View File

@@ -33,7 +33,10 @@ import android.preference.Preference;
import android.preference.PreferenceCategory;
import android.preference.PreferenceGroup;
import android.preference.PreferenceScreen;
import android.text.Spannable;
import android.text.style.TextAppearanceSpan;
import android.util.Log;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuInflater;
@@ -45,8 +48,10 @@ import android.widget.EditText;
import android.widget.TextView;
import com.android.internal.logging.MetricsLogger;
import com.android.settings.LinkifyUtils;
import com.android.settings.R;
import com.android.settings.SettingsActivity;
import com.android.settings.location.ScanningSettings;
import com.android.settings.search.BaseSearchIndexProvider;
import com.android.settings.search.Indexable;
import com.android.settings.search.SearchIndexableRaw;
@@ -136,6 +141,7 @@ public final class BluetoothSettings extends DeviceListPreferenceFragment implem
mEmptyView = (TextView) getView().findViewById(android.R.id.empty);
getListView().setEmptyView(mEmptyView);
mEmptyView.setGravity(Gravity.START | Gravity.CENTER_VERTICAL);
final SettingsActivity activity = (SettingsActivity) getActivity();
mSwitchBar = activity.getSwitchBar();
@@ -352,7 +358,7 @@ public final class BluetoothSettings extends DeviceListPreferenceFragment implem
break;
case BluetoothAdapter.STATE_OFF:
messageId = R.string.bluetooth_empty_list_bluetooth_off;
setOffMessage();
if (isUiRestricted()) {
messageId = R.string.bluetooth_empty_list_user_restricted;
}
@@ -366,12 +372,39 @@ public final class BluetoothSettings extends DeviceListPreferenceFragment implem
setDeviceListGroup(preferenceScreen);
removeAllDevices();
mEmptyView.setText(messageId);
if (messageId != 0) {
mEmptyView.setText(messageId);
}
if (!isUiRestricted()) {
getActivity().invalidateOptionsMenu();
}
}
private void setOffMessage() {
if (mEmptyView == null) {
return;
}
final CharSequence briefText = getText(R.string.bluetooth_empty_list_bluetooth_off);
final StringBuilder contentBuilder = new StringBuilder();
contentBuilder.append(briefText);
contentBuilder.append("\n\n");
contentBuilder.append(getText(R.string.ble_scan_notify_text));
getPreferenceScreen().removeAll();
LinkifyUtils.linkify(mEmptyView, contentBuilder, new LinkifyUtils.OnClickListener() {
@Override
public void onClick() {
final SettingsActivity activity =
(SettingsActivity) BluetoothSettings.this.getActivity();
activity.startPreferencePanel(ScanningSettings.class.getName(), null,
R.string.location_scanning_screen_title, null, null, 0);
}
});
Spannable boldSpan = (Spannable) mEmptyView.getText();
boldSpan.setSpan(
new TextAppearanceSpan(getActivity(), android.R.style.TextAppearance_Medium), 0,
briefText.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
}
@Override
public void onBluetoothStateChanged(int bluetoothState) {
super.onBluetoothStateChanged(bluetoothState);

53
src/com/android/settings/wifi/WifiSettings.java
View File

@@ -18,6 +18,7 @@ package com.android.settings.wifi;
import static android.net.wifi.WifiConfiguration.INVALID_NETWORK_ID;
import static android.os.UserManager.DISALLOW_CONFIG_WIFI;
import android.app.Activity;
import android.app.Dialog;
import android.content.Context;
@@ -25,7 +26,7 @@ import android.content.DialogInterface;
import android.content.Intent;
import android.content.res.Resources;
import android.content.res.TypedArray;
import android.location.LocationManager;
import android.graphics.drawable.Drawable;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.net.NetworkInfo.State;
@@ -36,21 +37,27 @@ import android.nfc.NfcAdapter;
import android.os.Bundle;
import android.preference.Preference;
import android.preference.PreferenceScreen;
import android.text.Spannable;
import android.text.style.TextAppearanceSpan;
import android.util.Log;
import android.view.ContextMenu;
import android.view.ContextMenu.ContextMenuInfo;
import android.view.Gravity;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView.AdapterContextMenuInfo;
import android.widget.TextView;
import android.widget.TextView.BufferType;
import android.widget.Toast;
import com.android.internal.logging.MetricsLogger;
import com.android.settings.LinkifyUtils;
import com.android.settings.R;
import com.android.settings.RestrictedSettingsFragment;
import com.android.settings.SettingsActivity;
import com.android.settings.location.ScanningSettings;
import com.android.settings.search.BaseSearchIndexProvider;
import com.android.settings.search.Indexable;
import com.android.settings.search.SearchIndexableRaw;
@@ -608,27 +615,41 @@ public class WifiSettings extends RestrictedSettingsFragment
protected TextView initEmptyView() {
TextView emptyView = (TextView) getActivity().findViewById(android.R.id.empty);
emptyView.setGravity(Gravity.START | Gravity.CENTER_VERTICAL);
getListView().setEmptyView(emptyView);
return emptyView;
}
private void setOffMessage() {
if (mEmptyView != null) {
mEmptyView.setText(R.string.wifi_empty_list_wifi_off);
if (android.provider.Settings.Global.getInt(getActivity().getContentResolver(),
android.provider.Settings.Global.WIFI_SCAN_ALWAYS_AVAILABLE, 0) == 1) {
mEmptyView.append("\n\n");
int resId;
if (android.provider.Settings.Secure.isLocationProviderEnabled(
getActivity().getContentResolver(), LocationManager.NETWORK_PROVIDER)) {
resId = R.string.wifi_scan_notify_text_location_on;
} else {
resId = R.string.wifi_scan_notify_text_location_off;
}
CharSequence charSeq = getText(resId);
mEmptyView.append(charSeq);
}
if (mEmptyView == null) {
return;
}
final CharSequence briefText = getText(R.string.wifi_empty_list_wifi_off);
if (isUiRestricted()) {
// Show only the brief text if the user is not allowed to configure scanning settings.
mEmptyView.setText(briefText, BufferType.SPANNABLE);
} else {
// Append the description of scanning settings with link.
final StringBuilder contentBuilder = new StringBuilder();
contentBuilder.append(briefText);
contentBuilder.append("\n\n");
contentBuilder.append(getText(R.string.wifi_scan_notify_text));
LinkifyUtils.linkify(mEmptyView, contentBuilder, new LinkifyUtils.OnClickListener() {
@Override
public void onClick() {
final SettingsActivity activity =
(SettingsActivity) WifiSettings.this.getActivity();
activity.startPreferencePanel(ScanningSettings.class.getName(), null,
R.string.location_scanning_screen_title, null, null, 0);
}
});
}
// Embolden and enlarge the brief description anyway.
Spannable boldSpan = (Spannable) mEmptyView.getText();
boldSpan.setSpan(
new TextAppearanceSpan(getActivity(), android.R.style.TextAppearance_Medium), 0,
briefText.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
getPreferenceScreen().removeAll();
}