###展讯volte视频通话
- 初始化状态读取
TelephonyManager.isImsRegistered()在远程服务端中对应的接口实际上为:
frameworks\opt\telephony\src\java\com\android\internal\telephony\PhoneBase.java
/**
* Get IMS Registration Status
*/
@Override
public boolean isImsRegistered() {
ImsPhone imsPhone = mImsPhone;
boolean isImsRegistered = false;
if (imsPhone != null) {
isImsRegistered = imsPhone.isImsRegistered();
} else {
ServiceStateTracker sst = getServiceStateTracker();
if (sst != null) {
isImsRegistered = sst.isImsRegistered();
}
}
Rlog.d(LOG_TAG, "isImsRegistered =" + isImsRegistered);
return isImsRegistered;
}在ImsPhone中
frameworks\opt\telephony\src\java\com\android\internal\telephony\imsphone
public boolean isImsRegistered() {
return mImsRegistered;
}
public void setImsRegistered(boolean value) {
mImsRegistered = value;
}
/* SPRD: Add for VoLTE. @{ */
public boolean isVideoEnabled(){
return isVideoCallEnabled();
}**该接口存在一定问题，在某些时候，会始终返回false状态 **
目前可依照展讯6.0平台系统拨号应用方案实现
- 展讯6.0实现
//使用TelephonyManager.listen(mPhoneStateListener,PhoneStateListener.LISTEN_VOLTE_STATE)注册一个PhoneState的监听器
//当注册监听器时，接口会理解回调onVoLteServiceStateChanged方法，返回当前volte状态
class DialVoLteStateListener extends PhoneStateListener {
@Override
public void onVoLteServiceStateChanged(VoLteServiceState stateInfo) {
if (stateInfo.getSrvccState() == VoLteServiceState.IMS_REG_STATE_REGISTERED) {
LogUtil.d("VOLTE_SERVICE_STATE_IMS_REGISTERED");
} else if (stateInfo.getSrvccState() == VoLteServiceState.IMS_REG_STATE_NOT_EGISTERED) {
LogUtil.d("VOLTE_SERVICE_STATE_IMS_UNREGISTERED");
}
}}
- 当注册监听器时，立即回调，返回当前volte状态
- 当volte状态变化时回调，对变化之后的状态给出通知
需注意，该监听方案不稳定，可能存在延迟、丢失等情况，只在进程启动时注册监听，会出现遗漏volte状态变化通知的情况，所以按照底版本方案，依靠该接口注册后立即返回状态的特点，在界面进入前台时注册，读取当前volte状态，当界面离开前台时反注册掉，依此反复。
- 展讯7.0实现
private class DialVoLteStateListener extends IImsRegisterListener.Stub {
@Override
public void imsRegisterStateChange(boolean isRegistered) {
LogUtil.d("imsRegisterStateChange: "+isRegistered);
}
}与展讯6.0实现思想相同，只是接口变化了
展讯7.0平台上，特别增加了一个aidl接口IImsRegisterListener,其中只定义了一个回调函数，imsRegisterStateChange。该接口相比6.0更加稳定可靠，只是注册和反注册该监听需要反射调用。
接口：IImsServiceEx imsService = ImsManagerEx.getIImsServiceEx(); imsService.registerforImsRegisterStateChanged(mPhoneStateListener);
private void reflect(String methodName,DialVoLteStateListener listener) {
Class<?> clazz = null;
Object result = null;
try {
clazz = Class.forName("com.android.ims.internal.ImsManagerEx");
if(clazz != null){
Method method = clazz.getMethod("getIImsServiceEx", null);
if(method != null){
result = method.invoke(obj, null);
}
}
} catch (ClassNotFoundException e) {
printError(e);
}
if (result != null) {
Class<?> clazz = result.getClass();
try {
Method method = clazz.getMethod(methodName, new Class[]{IImsRegisterListener.class});
if (null != method) {
method.invoke(obj, new Object[]{listener});
}
} catch (IllegalAccessException e) {
e.printStackTrace();
} catch (InvocationTargetException e) {
e.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
}
}
}
//注册监听器
reflect("registerforImsRegisterStateChanged",mPhoneStateListener);
//反注册监听器
reflect("unregisterforImsRegisterStateChanged",mPhoneStateListener);###MTK平台volte视频通话
MTK平台6.0和7.0的方案可通用
- 主动读取当前volte状态
TelephonyManager.isImsRegistered()与展讯相同，该方法依然存在问题,目前可有两种解决方案
1.修改Phone代码
packages\services\Telephony\src\com\android\phone\PhoneInterfaceManager.java
public boolean isImsRegistered() {
//Solve inserted on Sim2 and reg ims always return false >>>start
int phoneId = TelephonyUtilsEx.getMainPhoneId();
if(SubscriptionManager.isValidPhoneId(phoneId)) {
Phone phone = PhoneFactory.getPhone(phoneId);
if(null != phone) {
return phone.isImsRegistered();
}
}
//>>>end 此间为增加代码
return mPhone.isImsRegistered();
}2.反射MTK平台特有接口读取
调用ITelephonyEx的isImsRegistered(int subId)
boolean isImsRegistered() {
boolean flags = false;
//获取主数据sim卡的 subId
int subId = SubscriptionManager.getDefaultDataSubId();
//注：7.0 接口变化为SubscriptionManager.getDefaultDataSubscriptionId()
IBinder phoneEx = ServiceManager.getService("phoneEx");
if (phoneEx != null) {
Object telephonyEx = ReflectUtil.invokeStatic("com.mediatek.internal.telephony.ITelephonyEx$Stub", "asInterface",
new Class[] { IBinder.class }, new Object[] { phoneEx });
if (telephonyEx != null) {
Object r = ReflectUtil.invoke(telephonyEx,"isImsRegistered",new Class[]{int.class},new Object[]{subId});
if (r instanceof Boolean) {
flags = (Boolean) r;
LogUtil.d("ITelephonyEx isImsRegistered :" + flags);
}
}
}
return flags;
}- 动态监听volte状态变化
可以通过广播获取volte状态变化的通知，但是该广播不是StickyBroadcast，注册时无法获取当前状态，需上述接口辅助
//注册广播
IntentFilter filter = new IntentFilter();
filter.addAction("com.android.ims.IMS_STATE_CHANGED");
mContext.registerReceiver(mVoLTEStateBroadcast, filter);
class VoLTEStateBroadcast extends BroadcastReceiver{
private static final String REG_STATE = "android:regState";
private static final String REG_PHONE_ID = "android:phone_id";
@Override
public void onReceive(Context context, Intent intent) {
final String action = intent.getAction();
LogUtil.d("VoLTEStateBroadcast action:"+action);
if ("com.android.ims.IMS_STATE_CHANGED".equals(action)) {
int regState = intent.getIntExtra(REG_STATE, -1);
int phoneId = intent.getIntExtra(REG_PHONE_ID, -1 );
boolean enabled = (regState == ServiceState.STATE_IN_SERVICE）;
}
}
}###高通平台volte视频通话
高通平台6.0和7.0的实现方案亦可通用
高通平台也通过注册广播实现，并且该广播是StickyBroadcast，注册立即返回当前volte状态
//注册粘性广播
final IntentFilter intentFilter = new IntentFilter();
intentFilter.addAction("android.intent.action.SERVICE_STATE");
mContext.registerReceiver(mServiceStateListener, intentFilter);
class ServiceStateListener extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
if ("android.intent.action.SERVICE_STATE".equals(action)){
int state = intent.getIntExtra("imsRadioTechnology",-1);
boolean register = (state == ServiceState.RIL_RADIO_TECHNOLOGY_LTE）
//最终结果
boolean result = isVideoRegister() && register;
}
}
}
//需要判断当前卡是否有视频通话的能力
public boolean isVideoRegister(Context context) {
TelecomManager telecommMgr = (TelecomManager)context.getSystemService(Context.TELECOM_SERVICE);
if (telecommMgr == null) {
return false;
}
List<PhoneAccountHandle> accountHandles = telecommMgr.getCallCapablePhoneAccounts();
for (PhoneAccountHandle accountHandle : accountHandles) {
PhoneAccount account = telecommMgr.getPhoneAccount(accountHandle);
if (account != null) {
if(account.hasCapabilities(PhoneAccount.CAPABILITY_VIDEO_CALLING)) {
return true;
}
}
}
LogUtil.d("isVideoRegister : false");
return false;
}在读取volte状态之前，首先要判断当前手机系统版本是否支持volte视频通话，这是一个属性配置:
ImsManager.isVtEnabledByPlatform(mContext)
另，以上API的调用，需注意请求相关权限：
<uses-permission android:name="android.permission.READ_PHONE_STATE"/> <uses-permission android:name="android.permission.READ_PRIVILEGED_PHONE_STATE" />
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