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Refactored cell broadcast area info support

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Area info cell broadcast messages are not handled
by cell broadcast receiver anymore. Instead, they will
be processed in cell broadcast service. Privileged apps
that are interested in getting the information will need
to get it directly from cell broadcast service.

Note this is only enabled for certain countries and carriers.

Test: Manual
Bug: 141318859
Change-Id: If6a0a0c6a76e8b90a8feaea1e2771993e2d0edfe
This commit is contained in:
Jack Yu
2020-01-30 00:04:06 -08:00
parent f38bff9e0b
commit c4da22a2ce
3 changed files with 112 additions and 30 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
AndroidManifest.xml
View File

@@ -102,6 +102,7 @@
<uses-permission android:name="android.permission.CAMERA" />
<uses-permission android:name="android.permission.MEDIA_CONTENT_CONTROL" />
<uses-permission android:name="android.permission.INSTALL_DYNAMIC_SYSTEM" />
<uses-permission android:name="android.permission.BIND_CELL_BROADCAST_SERVICE" />
<application android:label="@string/settings_label"
android:icon="@drawable/ic_launcher_settings"

135
src/com/android/settings/deviceinfo/simstatus/SimStatusDialogController.java
View File

@@ -16,22 +16,26 @@
package com.android.settings.deviceinfo.simstatus;
import android.Manifest;
import android.annotation.Nullable;
import android.content.BroadcastReceiver;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.ServiceConnection;
import android.content.res.Resources;
import android.os.Bundle;
import android.os.IBinder;
import android.os.PersistableBundle;
import android.os.UserHandle;
import android.os.RemoteException;
import android.telephony.Annotation;
import android.telephony.CarrierConfigManager;
import android.telephony.CellBroadcastIntents;
import android.telephony.CellBroadcastService;
import android.telephony.CellSignalStrength;
import android.telephony.ICellBroadcastService;
import android.telephony.PhoneStateListener;
import android.telephony.ServiceState;
import android.telephony.SignalStrength;
import android.telephony.SmsCbMessage;
import android.telephony.SubscriptionInfo;
import android.telephony.SubscriptionManager;
import android.telephony.SubscriptionManager.OnSubscriptionsChangedListener;
@@ -39,6 +43,7 @@ import android.telephony.TelephonyManager;
import android.telephony.UiccCardInfo;
import android.telephony.euicc.EuiccManager;
import android.text.TextUtils;
import android.util.Log;
import androidx.annotation.NonNull;
import androidx.annotation.VisibleForTesting;
@@ -58,6 +63,8 @@ public class SimStatusDialogController implements LifecycleObserver, OnResume, O
private final static String TAG = "SimStatusDialogCtrl";
private static final String CELL_BROADCAST_SERVICE_PACKAGE = "com.android.cellbroadcastservice";
@VisibleForTesting
final static int NETWORK_PROVIDER_VALUE_ID = R.id.operator_name_value;
@VisibleForTesting
@@ -96,12 +103,6 @@ public class SimStatusDialogController implements LifecycleObserver, OnResume, O
@VisibleForTesting
static final int MAX_PHONE_COUNT_SINGLE_SIM = 1;
private final static String CB_AREA_INFO_RECEIVED_ACTION =
"com.android.cellbroadcastreceiver.CB_AREA_INFO_RECEIVED";
private final static String GET_LATEST_CB_AREA_INFO_ACTION =
"com.android.cellbroadcastreceiver.GET_LATEST_CB_AREA_INFO";
private final static String CELL_BROADCAST_RECEIVER_APP = "com.android.cellbroadcastreceiver";
private final OnSubscriptionsChangedListener mOnSubscriptionsChangedListener =
new OnSubscriptionsChangedListener() {
@Override
@@ -131,23 +132,48 @@ public class SimStatusDialogController implements LifecycleObserver, OnResume, O
private final BroadcastReceiver mAreaInfoReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
final String action = intent.getAction();
if (TextUtils.equals(action, CB_AREA_INFO_RECEIVED_ACTION)) {
final Bundle extras = intent.getExtras();
if (extras == null) {
return;
}
final SmsCbMessage cbMessage = (SmsCbMessage) extras.get("message");
if (cbMessage != null && mSlotIndex == cbMessage.getSlotIndex()) {
final String latestAreaInfo = cbMessage.getMessageBody();
mDialog.setText(OPERATOR_INFO_VALUE_ID, latestAreaInfo);
}
}
updateAreaInfoText();
}
};
private PhoneStateListener mPhoneStateListener;
private CellBroadcastServiceConnection mCellBroadcastServiceConnection;
private class CellBroadcastServiceConnection implements ServiceConnection {
private IBinder mService;
@Nullable
public IBinder getService() {
return mService;
}
@Override
public void onServiceConnected(ComponentName className, IBinder service) {
Log.d(TAG, "connected to CellBroadcastService");
this.mService = service;
updateAreaInfoText();
}
@Override
public void onServiceDisconnected(ComponentName className) {
this.mService = null;
Log.d(TAG, "mICellBroadcastService has disconnected unexpectedly");
}
@Override
public void onBindingDied(ComponentName name) {
this.mService = null;
Log.d(TAG, "Binding died");
}
@Override
public void onNullBinding(ComponentName name) {
this.mService = null;
Log.d(TAG, "Null binding");
}
}
public SimStatusDialogController(@NonNull SimStatusDialogFragment dialog, Lifecycle lifecycle,
int slotId) {
mDialog = dialog;
@@ -190,6 +216,19 @@ public class SimStatusDialogController implements LifecycleObserver, OnResume, O
updateImsRegistrationState();
}
/**
* Deinitialization works
*/
public void deinitialize() {
if (mShowLatestAreaInfo) {
if (mCellBroadcastServiceConnection != null
&& mCellBroadcastServiceConnection.getService() != null) {
mContext.unbindService(mCellBroadcastServiceConnection);
}
mCellBroadcastServiceConnection = null;
}
}
@Override
public void onResume() {
if (mSubscriptionInfo == null) {
@@ -204,14 +243,9 @@ public class SimStatusDialogController implements LifecycleObserver, OnResume, O
mSubscriptionManager.addOnSubscriptionsChangedListener(mOnSubscriptionsChangedListener);
if (mShowLatestAreaInfo) {
updateAreaInfoText();
mContext.registerReceiver(mAreaInfoReceiver,
new IntentFilter(CB_AREA_INFO_RECEIVED_ACTION),
Manifest.permission.RECEIVE_EMERGENCY_BROADCAST, null /* scheduler */);
// Ask CellBroadcastReceiver to broadcast the latest area info received
final Intent getLatestIntent = new Intent(GET_LATEST_CB_AREA_INFO_ACTION);
getLatestIntent.setPackage(CELL_BROADCAST_RECEIVER_APP);
mContext.sendBroadcastAsUser(getLatestIntent, UserHandle.ALL,
Manifest.permission.RECEIVE_EMERGENCY_BROADCAST);
new IntentFilter(CellBroadcastIntents.ACTION_AREA_INFO_UPDATED));
}
}
@@ -265,13 +299,54 @@ public class SimStatusDialogController implements LifecycleObserver, OnResume, O
mDialog.setText(CELLULAR_NETWORK_STATE, networkStateValue);
}
/**
* Update area info text retrieved from
* {@link CellBroadcastService#getCellBroadcastAreaInfo(int)}
*/
private void updateAreaInfoText() {
if (!mShowLatestAreaInfo || mCellBroadcastServiceConnection == null) return;
ICellBroadcastService cellBroadcastService =
ICellBroadcastService.Stub.asInterface(
mCellBroadcastServiceConnection.getService());
if (cellBroadcastService == null) return;
try {
mDialog.setText(OPERATOR_INFO_VALUE_ID,
cellBroadcastService.getCellBroadcastAreaInfo(
SimStatusDialogController.this.mSlotIndex));
} catch (RemoteException e) {
Log.d(TAG, "Can't get area info. e=" + e);
}
}
/**
* Bind cell broadcast service.
*/
private void bindCellBroadcastService() {
mCellBroadcastServiceConnection = new CellBroadcastServiceConnection();
Intent intent = new Intent(CellBroadcastService.CELL_BROADCAST_SERVICE_INTERFACE);
intent.setPackage(CELL_BROADCAST_SERVICE_PACKAGE);
if (mCellBroadcastServiceConnection != null
&& mCellBroadcastServiceConnection.getService() == null) {
if (!mContext.bindService(intent, mCellBroadcastServiceConnection,
Context.BIND_AUTO_CREATE)) {
Log.e(TAG, "Unable to bind to service");
}
} else {
Log.d(TAG, "skipping bindService because connection already exists");
}
}
private void updateLatestAreaInfo() {
mShowLatestAreaInfo = Resources.getSystem().getBoolean(
com.android.internal.R.bool.config_showAreaUpdateInfoSettings)
&& mTelephonyManager.getPhoneType() != TelephonyManager.PHONE_TYPE_CDMA;
if (!mShowLatestAreaInfo) {
if (mShowLatestAreaInfo) {
// Bind cell broadcast service to get the area info. The info will be updated once
// the service is connected.
bindCellBroadcastService();
} else {
mDialog.removeSettingFromScreen(OPERATOR_INFO_LABEL_ID);
mDialog.removeSettingFromScreen(OPERATOR_INFO_VALUE_ID);
}

6
src/com/android/settings/deviceinfo/simstatus/SimStatusDialogFragment.java
View File

@@ -74,6 +74,12 @@ public class SimStatusDialogFragment extends InstrumentedDialogFragment {
return builder.setView(mRootView).create();
}
@Override
public void onDestroy() {
mController.deinitialize();
super.onDestroy();
}
public void removeSettingFromScreen(int viewId) {
final View view = mRootView.findViewById(viewId);
if (view != null) {