refact some code

doric-iOS/Devkit/Classes/DoricDev.m

@@ -95,20 +95,20 @@ - (void)sendDevCommand:(NSString *)command {
 }
 
 - (void)onOpenEvent {
-    ShowToast(@"dev kit connected", DoricBottom);
+    ShowToast(@"dev kit connected", DoricGravityBottom);
 }
 
 - (void)onEOFEvent {
-    ShowToast(@"dev kit eof exception", DoricBottom);
+    ShowToast(@"dev kit eof exception", DoricGravityBottom);
 }
 
 - (void)onConnectExceptionEvent {
-    ShowToast(@"dev kit connection exception", DoricBottom);
+    ShowToast(@"dev kit connection exception", DoricGravityBottom);
 }
 
 - (void)onStartDebugEvent:(NSNotification *)notification {
     NSString *contextId = notification.object;
-    ShowToast(contextId, DoricBottom);
+    ShowToast(contextId, DoricGravityBottom);
     for (NSValue *value in  [[DoricContextManager instance] aliveContexts]) {
         DoricContext *context = value.nonretainedObjectValue;
         BOOL result = [context.contextId compare:contextId] == NSOrderedSame;

doric-iOS/Devkit/Classes/DoricDevViewController.m

@@ -53,7 +53,7 @@ - (void)viewDidLoad {
         NSString *result = @"127.0.0.1";
         [DoricJSRemoteExecutor configIp:result];
         [[DoricDev instance] connectDevKit:[NSString stringWithFormat:@"ws://%@:7777", result]];
-        ShowToast([NSString stringWithFormat:@"Connected to %@", result], DoricBottom);
+        ShowToast([NSString stringWithFormat:@"Connected to %@", result], DoricGravityBottom);
     } else {
         [self.navigationController pushViewController:[QRScanViewController new] animated:NO];
     }

doric-iOS/Devkit/Classes/QRScanViewController.m

@@ -106,7 +106,7 @@ - (void)captureOutput:(AVCaptureOutput *)captureOutput didOutputMetadataObjects:
         NSLog(@"Scan result is %@", result);
         [[DoricDev instance] connectDevKit:[NSString stringWithFormat:@"ws://%@:7777", result]];
         [DoricJSRemoteExecutor configIp:result];
-        ShowToast([NSString stringWithFormat:@"Connected to %@", result], DoricBottom);
+        ShowToast([NSString stringWithFormat:@"Connected to %@", result], DoricGravityBottom);
         [self.navigationController popViewControllerAnimated:NO];
     }
 }