Workarounds to avoid removing all prefs
Removing all prefs causes ugly animations, so avoid it at all cost and cache all the prefs (while still added) as long as possible. Bug: 26271353 Change-Id: I33b84d751938b460f4b66c0158057407dd45d974
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@@ -84,6 +84,10 @@ public final class BluetoothDevicePreference extends Preference implements
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onDeviceAttributesChanged();
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}
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void rebind() {
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notifyChanged();
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}
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CachedBluetoothDevice getCachedDevice() {
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return mCachedDevice;
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}
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@@ -39,7 +39,6 @@ import android.view.MenuInflater;
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import android.view.MenuItem;
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import android.view.View;
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import android.widget.TextView;
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import com.android.internal.logging.MetricsLogger;
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import com.android.internal.logging.MetricsProto.MetricsEvent;
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import com.android.settings.LinkifyUtils;
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@@ -77,6 +76,8 @@ public final class BluetoothSettings extends DeviceListPreferenceFragment implem
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private static final String BTOPP_ACTION_OPEN_RECEIVED_FILES =
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"android.btopp.intent.action.OPEN_RECEIVED_FILES";
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private static final String KEY_PAIRED_DEVICES = "paired_devices";
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private static View mSettingsDialogView = null;
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private BluetoothEnabler mBluetoothEnabler;
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@@ -154,6 +155,21 @@ public final class BluetoothSettings extends DeviceListPreferenceFragment implem
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void addPreferencesForActivity() {
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addPreferencesFromResource(R.xml.bluetooth_settings);
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mPairedDevicesCategory = new PreferenceCategory(getPrefContext());
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mPairedDevicesCategory.setKey(KEY_PAIRED_DEVICES);
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mPairedDevicesCategory.setOrder(1);
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getPreferenceScreen().addPreference(mPairedDevicesCategory);
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mAvailableDevicesCategory = new BluetoothProgressCategory(getActivity());
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mAvailableDevicesCategory.setSelectable(false);
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mAvailableDevicesCategory.setOrder(2);
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getPreferenceScreen().addPreference(mAvailableDevicesCategory);
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mMyDevicePreference = new Preference(getPrefContext());
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mMyDevicePreference.setSelectable(false);
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mMyDevicePreference.setOrder(3);
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getPreferenceScreen().addPreference(mMyDevicePreference);
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setHasOptionsMenu(true);
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}
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@@ -275,14 +291,15 @@ public final class BluetoothSettings extends DeviceListPreferenceFragment implem
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private void addDeviceCategory(PreferenceGroup preferenceGroup, int titleId,
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BluetoothDeviceFilter.Filter filter, boolean addCachedDevices) {
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cacheRemoveAllPrefs(preferenceGroup);
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preferenceGroup.setTitle(titleId);
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getPreferenceScreen().addPreference(preferenceGroup);
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setFilter(filter);
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setDeviceListGroup(preferenceGroup);
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if (addCachedDevices) {
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addCachedDevices();
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}
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preferenceGroup.setEnabled(true);
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removeCachedPrefs(preferenceGroup);
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}
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private void updateContent(int bluetoothState) {
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@@ -291,8 +308,6 @@ public final class BluetoothSettings extends DeviceListPreferenceFragment implem
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switch (bluetoothState) {
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case BluetoothAdapter.STATE_ON:
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preferenceScreen.removeAll();
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preferenceScreen.setOrderingAsAdded(true);
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mDevicePreferenceMap.clear();
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if (isUiRestricted()) {
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@@ -301,44 +316,32 @@ public final class BluetoothSettings extends DeviceListPreferenceFragment implem
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}
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// Paired devices category
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if (mPairedDevicesCategory == null) {
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mPairedDevicesCategory = new PreferenceCategory(getPrefContext());
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} else {
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mPairedDevicesCategory.removeAll();
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}
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addDeviceCategory(mPairedDevicesCategory,
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R.string.bluetooth_preference_paired_devices,
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BluetoothDeviceFilter.BONDED_DEVICE_FILTER, true);
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int numberOfPairedDevices = mPairedDevicesCategory.getPreferenceCount();
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if (isUiRestricted() || numberOfPairedDevices <= 0) {
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preferenceScreen.removePreference(mPairedDevicesCategory);
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if (preferenceScreen.findPreference(KEY_PAIRED_DEVICES) != null) {
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preferenceScreen.removePreference(mPairedDevicesCategory);
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}
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} else {
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if (preferenceScreen.findPreference(KEY_PAIRED_DEVICES) == null) {
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preferenceScreen.addPreference(mPairedDevicesCategory);
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}
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}
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// Available devices category
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if (mAvailableDevicesCategory == null) {
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mAvailableDevicesCategory = new BluetoothProgressCategory(getActivity());
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mAvailableDevicesCategory.setSelectable(false);
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} else {
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mAvailableDevicesCategory.removeAll();
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}
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addDeviceCategory(mAvailableDevicesCategory,
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R.string.bluetooth_preference_found_devices,
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BluetoothDeviceFilter.UNBONDED_DEVICE_FILTER, mInitialScanStarted);
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int numberOfAvailableDevices = mAvailableDevicesCategory.getPreferenceCount();
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if (!mInitialScanStarted) {
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startScanning();
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}
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if (mMyDevicePreference == null) {
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mMyDevicePreference = new Preference(getPrefContext());
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}
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mMyDevicePreference.setSummary(getResources().getString(
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R.string.bluetooth_is_visible_message, mLocalAdapter.getName()));
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mMyDevicePreference.setSelectable(false);
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preferenceScreen.addPreference(mMyDevicePreference);
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getActivity().invalidateOptionsMenu();
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@@ -176,11 +176,19 @@ public abstract class DeviceListPreferenceFragment extends
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return;
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}
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BluetoothDevicePreference preference = new BluetoothDevicePreference(
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getPrefContext(), cachedDevice);
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String key = cachedDevice.getDevice().getAddress();
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BluetoothDevicePreference preference = (BluetoothDevicePreference) getCachedPreference(key);
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if (preference == null) {
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preference = new BluetoothDevicePreference(getPrefContext(), cachedDevice);
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mDeviceListGroup.addPreference(preference);
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} else {
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// Tell the preference it is being re-used in case there is new info in the
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// cached device.
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preference.rebind();
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}
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initDevicePreference(preference);
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mDeviceListGroup.addPreference(preference);
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mDevicePreferenceMap.put(cachedDevice, preference);
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}
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