ios-oc-listen for Bluetooth on (open)

1. import Header File

#import <CoreBluetooth/CoreBluetooth.h>

2. The object

@property (strong,nonatomic) cbcentralmanager* CM;

3. Compliance with Agency methods

Cbcentralmanagerdelegate

4. Initialize the object and set the proxy

Self. CM = [[Cbcentralmanageralloc] initWithDelegate:selfqueue:nil];

5. Proxy method

-(void) Centralmanagerdidupdatestate: (Cbcentralmanager *) central{

NSString *message = nil;

Switch (central.state) {

Case 1:

Message = @ "This device does not support Bluetooth, please check system settings";

Break

Case 2:

Message = @ "This device Bluetooth is not authorized, please check system settings";

Break

Case 3:

Message = @ "This device Bluetooth is not authorized, please check system settings";

Break

Case 4:

Message = @ "This device has not yet turned on Bluetooth, open in Settings";

Break

Case 5:

message = @ "Bluetooth has been successfully opened, please try again later";

Break

Default

Break

}

if (message!=nil&&message.length!=0)

{

NSLog (@ "message = =%@", message);

}

}