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read/writeCharacteristic, read/writeDescriptor, setNotification for i…
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…OS. #20
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demarcoMac committed Mar 6, 2018
1 parent 5db3a9a commit 3f1f201
Showing 1 changed file with 150 additions and 23 deletions.
173 changes: 150 additions & 23 deletions ios/Classes/FlutterBluePlugin.m
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Original file line number Diff line number Diff line change
Expand Up @@ -89,42 +89,117 @@ - (void)handleMethodCall:(FlutterMethodCall*)call result:(FlutterResult)result {
result(nil);
} else if([@"disconnect" isEqualToString:call.method]) {
NSString *remoteId = [call arguments];
CBPeripheral *peripheral = [self findPeripheral:remoteId];
if(peripheral != nil) {
@try {
CBPeripheral *peripheral = [self findPeripheral:remoteId];
[_centralManager cancelPeripheralConnection:peripheral];
result(nil);
} @catch(FlutterError *e) {
result(e);
}
result(nil);
} else if([@"deviceState" isEqualToString:call.method]) {
NSString *remoteId = [call arguments];
CBPeripheral *peripheral = [self findPeripheral:remoteId];
if(peripheral != nil) {
@try {
CBPeripheral *peripheral = [self findPeripheral:remoteId];
result([self toFlutterData:[self toDeviceStateProto:peripheral state:peripheral.state]]);
} else {
result([FlutterError errorWithCode:@"deviceState"
message:@"Peripheral not found in findPeripheral"
details:nil]);
} @catch(FlutterError *e) {
result(e);
}
} else if([@"discoverServices" isEqualToString:call.method]) {
NSString *remoteId = [call arguments];
CBPeripheral *peripheral = [self findPeripheral:remoteId];
if(peripheral != nil) {
// TODO: Service list filter (#34)
@try {
CBPeripheral *peripheral = [self findPeripheral:remoteId];
[peripheral discoverServices:nil];
result(nil);
} else {
result([FlutterError errorWithCode:@"discoverServices"
message:@"Peripheral not found in findPeripheral"
details:nil]);
} @catch(FlutterError *e) {
result(e);
}
} else if([@"services" isEqualToString:call.method]) {
NSString *remoteId = [call arguments];
CBPeripheral *peripheral = [self findPeripheral:remoteId];
if(peripheral != nil) {
@try {
CBPeripheral *peripheral = [self findPeripheral:remoteId];
result([self toFlutterData:[self toServicesResultProto:peripheral]]);
} else {
result([FlutterError errorWithCode:@"services"
message:@"Peripheral not found in findPeripheral"
details:nil]);
} @catch(FlutterError *e) {
result(e);
}
} else if([@"readCharacteristic" isEqualToString:call.method]) {
FlutterStandardTypedData *data = [call arguments];
ProtosReadCharacteristicRequest *request = [[ProtosReadCharacteristicRequest alloc] initWithData:[data data] error:nil];
NSString *remoteId = [request remoteId];
@try {
// Find peripheral
CBPeripheral *peripheral = [self findPeripheral:remoteId];
// Find characteristic
CBCharacteristic *characteristic = [self locateCharacteristic:[request characteristicUuid] peripheral:peripheral serviceId:[request serviceUuid] secondaryServiceId:[request secondaryServiceUuid]];
// Trigger a read
[peripheral readValueForCharacteristic:characteristic];
result(nil);
} @catch(FlutterError *e) {
result(e);
}
} else if([@"readDescriptor" isEqualToString:call.method]) {
FlutterStandardTypedData *data = [call arguments];
ProtosReadDescriptorRequest *request = [[ProtosReadDescriptorRequest alloc] initWithData:[data data] error:nil];
NSString *remoteId = [request remoteId];
@try {
// Find peripheral
CBPeripheral *peripheral = [self findPeripheral:remoteId];
// Find characteristic
CBCharacteristic *characteristic = [self locateCharacteristic:[request characteristicUuid] peripheral:peripheral serviceId:[request serviceUuid] secondaryServiceId:[request secondaryServiceUuid]];
// Find descriptor
CBDescriptor *descriptor = [self locateDescriptor:[request descriptorUuid] characteristic:characteristic];
[peripheral readValueForDescriptor:descriptor];
result(nil);
} @catch(FlutterError *e) {
result(e);
}
} else if([@"writeCharacteristic" isEqualToString:call.method]) {
FlutterStandardTypedData *data = [call arguments];
ProtosWriteCharacteristicRequest *request = [[ProtosWriteCharacteristicRequest alloc] initWithData:[data data] error:nil];
NSString *remoteId = [request remoteId];
@try {
// Find peripheral
CBPeripheral *peripheral = [self findPeripheral:remoteId];
// Find characteristic
CBCharacteristic *characteristic = [self locateCharacteristic:[request characteristicUuid] peripheral:peripheral serviceId:[request serviceUuid] secondaryServiceId:[request secondaryServiceUuid]];
// Get correct write type
CBCharacteristicWriteType type = ([request writeType] == ProtosWriteCharacteristicRequest_WriteType_WithoutResponse) ? CBCharacteristicWriteWithoutResponse : CBCharacteristicWriteWithResponse;
// Write to characteristic
[peripheral writeValue:[request value] forCharacteristic:characteristic type:type];
result(nil);
} @catch(FlutterError *e) {
result(e);
}
} else if([@"writeDescriptor" isEqualToString:call.method]) {
FlutterStandardTypedData *data = [call arguments];
ProtosWriteDescriptorRequest *request = [[ProtosWriteDescriptorRequest alloc] initWithData:[data data] error:nil];
NSString *remoteId = [request remoteId];
@try {
// Find peripheral
CBPeripheral *peripheral = [self findPeripheral:remoteId];
// Find characteristic
CBCharacteristic *characteristic = [self locateCharacteristic:[request characteristicUuid] peripheral:peripheral serviceId:[request serviceUuid] secondaryServiceId:[request secondaryServiceUuid]];
// Find descriptor
CBDescriptor *descriptor = [self locateDescriptor:[request descriptorUuid] characteristic:characteristic];
// Write descriptor
[peripheral writeValue:[request value] forDescriptor:descriptor];
result(nil);
} @catch(FlutterError *e) {
result(e);
}
} else if([@"setNotification" isEqualToString:call.method]) {
FlutterStandardTypedData *data = [call arguments];
ProtosSetNotificationRequest *request = [[ProtosSetNotificationRequest alloc] initWithData:[data data] error:nil];
NSString *remoteId = [request remoteId];
@try {
// Find peripheral
CBPeripheral *peripheral = [self findPeripheral:remoteId];
// Find characteristic
CBCharacteristic *characteristic = [self locateCharacteristic:[request characteristicUuid] peripheral:peripheral serviceId:[request serviceUuid] secondaryServiceId:[request secondaryServiceUuid]];
// Set notification value
[peripheral setNotifyValue:[request enable] forCharacteristic:characteristic];
result(nil);
} @catch(FlutterError *e) {
result(e);
}
} else {
result(FlutterMethodNotImplemented);
Expand All @@ -133,9 +208,59 @@ - (void)handleMethodCall:(FlutterMethodCall*)call result:(FlutterResult)result {

- (CBPeripheral*)findPeripheral:(NSString*)remoteId {
NSArray<CBPeripheral*> *peripherals = [_centralManager retrievePeripheralsWithIdentifiers:@[[[NSUUID alloc] initWithUUIDString:remoteId]]];
CBPeripheral *peripheral;
for(CBPeripheral *p in peripherals) {
if([[p.identifier UUIDString] isEqualToString:remoteId]) {
return p;
peripheral = p;
break;
}
}
if(peripheral == nil) {
@throw [FlutterError errorWithCode:@"findPeripheral"
message:@"Peripheral not found"
details:nil];
}
return peripheral;
}

- (CBCharacteristic*)locateCharacteristic:(NSString*)characteristicId peripheral:(CBPeripheral*)peripheral serviceId:(NSString*)serviceId secondaryServiceId:(NSString*)secondaryServiceId {
CBService *primaryService = [self getAttributeFromArray:serviceId array:[peripheral services]];
if(primaryService == nil || [primaryService isPrimary] == false) {
@throw [FlutterError errorWithCode:@"locateCharacteristic"
message:@"service could not be located on the device"
details:nil];
}
CBService *secondaryService;
if(secondaryServiceId != nil) {
secondaryService = [self getAttributeFromArray:secondaryServiceId array:[primaryService includedServices]];
@throw [FlutterError errorWithCode:@"locateCharacteristic"
message:@"secondary service could not be located on the device"
details:nil];
}
CBService *service = (secondaryService != nil) ? secondaryService : primaryService;
CBCharacteristic *characteristic = [self getAttributeFromArray:characteristicId array:[service characteristics]];
if(characteristic == nil) {
@throw [FlutterError errorWithCode:@"locateCharacteristic"
message:@"characteristic could not be located on the device"
details:nil];
}
return characteristic;
}

- (CBDescriptor*)locateDescriptor:(NSString*)descriptorId characteristic:(CBCharacteristic*)characteristic {
CBDescriptor *descriptor = [self getAttributeFromArray:descriptorId array:[characteristic descriptors]];
if(descriptor == nil) {
@throw [FlutterError errorWithCode:@"locateDescriptor"
message:@"descriptor could not be located on the device"
details:nil];
}
return descriptor;
}

- (CBAttribute*)getAttributeFromArray:(NSString*)uuidString array:(NSArray<CBAttribute*>*)array {
for(CBAttribute *a in array) {
if([[a.UUID UUIDString] isEqualToString:uuidString]) {
return a;
}
}
return nil;
Expand Down Expand Up @@ -286,6 +411,8 @@ - (ProtosDiscoverServicesResult*)toServicesResultProto:(CBPeripheral *)periphera

- (ProtosBluetoothService*)toServiceProto:(CBPeripheral *)peripheral service:(CBService *)service {
ProtosBluetoothService *result = [[ProtosBluetoothService alloc] init];
NSLog(@"peripheral uuid:%@", [peripheral.identifier UUIDString]);
NSLog(@"service uuid:%@", [service.UUID UUIDString]);
[result setRemoteId:[peripheral.identifier UUIDString]];
[result setUuid:[service.UUID UUIDString]];
[result setIsPrimary:[service isPrimary]];
Expand Down

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