WEBVTT 00:00.080 --> 00:00.920 Welcome back. 00:00.960 --> 00:05.320 We finished the predict mileage function and the validate features. 00:05.480 --> 00:09.800 Also we finished the car mileage predictor class. 00:09.960 --> 00:14.600 Now let's make use of this class and execute the functions. 00:14.720 --> 00:17.240 Open the car mileage predictor screen. 00:17.240 --> 00:22.720 And inside this composable let's create some variables. 00:23.000 --> 00:30.880 So here val predictor equals remember and car mileage predictor class. 00:31.120 --> 00:33.920 And what we need to pass is a context. 00:33.920 --> 00:37.360 So for that let's create a val app. 00:37.400 --> 00:40.400 Context equals to context. 00:40.560 --> 00:46.440 And if it is not null then go and get the current local context. 00:46.640 --> 00:50.200 Pass it here to the car mileage predictor. 00:50.240 --> 00:56.280 Also we need to create an instance of prediction results bar. 00:56.400 --> 01:01.080 Remember it's a mutable state of float. 01:01.120 --> 01:06.040 We need to get the result as a float and make it null. 01:06.360 --> 01:08.240 Then var is loading. 01:08.280 --> 01:10.360 Check if it is loading or not. 01:10.360 --> 01:20.400 So we need to check if the model is calculating and loading or not, just in case displaying a circular 01:20.400 --> 01:21.840 progress bar or not. 01:21.880 --> 01:27.280 Okay, we have the validation errors and car features. 01:27.320 --> 01:27.800 Okay. 01:27.960 --> 01:30.680 Scroll down to the button. 01:30.680 --> 01:33.000 And here the prediction button. 01:33.000 --> 01:34.560 We need to work here. 01:34.560 --> 01:36.880 Here in the onClick. 01:37.040 --> 01:47.880 We need to start by creating a new variable called validation equals to predictor dot validate features 01:47.880 --> 01:50.960 and pass the car features variable. 01:50.960 --> 01:58.930 So here the predictor is an instance of the predictor car mileage predictor class and validate features 01:58.930 --> 02:04.610 is the function that we use we we created in the previous video. 02:04.650 --> 02:05.210 Okay. 02:05.330 --> 02:12.250 We need to pass a car feature variable I pass the car features mutable state. 02:12.290 --> 02:19.050 Now set the validation errors to validation dot errors. 02:19.170 --> 02:29.250 So get from this function the errors list and store it inside the validation errors variable. 02:29.290 --> 02:34.530 Here, let me check if validation is valid. 02:34.570 --> 02:47.050 I told you that this validation is of type uh validate results and this takes two parameters is valid 02:47.050 --> 02:48.090 and errors. 02:48.250 --> 02:50.850 If it is valid it's a boolean. 02:50.850 --> 02:58.450 No errors go and return true if there is any error, return false. 02:58.770 --> 03:01.850 So if there is, there is no errors. 03:01.890 --> 03:05.930 The validation errors list is empty. 03:06.130 --> 03:09.730 This is the logic get is loading to true. 03:09.930 --> 03:11.050 Set it to true. 03:11.330 --> 03:12.610 Prediction. 03:12.650 --> 03:20.410 A result equals to predict dot, predict mileage and pass the card features and is loading. 03:20.450 --> 03:22.010 Set it to false. 03:22.050 --> 03:28.490 Here we are checking if everything every input is valid. 03:28.810 --> 03:38.530 Then go and set the validation to true and if it is true, go and execute the predict mileage function. 03:38.570 --> 03:46.410 Okay, so we used this function validate features to check for all valid inputs. 03:46.610 --> 03:51.850 If all valid inputs are okay and no errors. 03:52.170 --> 03:57.610 So the that validate results returns as valid to true and errors empty. 03:57.970 --> 04:01.170 Then go and execute this function. 04:01.170 --> 04:05.450 Predict mileage and pass the card features as a parameter. 04:05.490 --> 04:10.290 Okay, this is the logic behind using this function. 04:10.370 --> 04:11.810 Then enabled. 04:11.810 --> 04:20.970 If it is not loading then set it to loading so it's opposite to loading if it is loading. 04:21.210 --> 04:23.530 So disable the button. 04:23.530 --> 04:30.050 If it is not loading anything go and enable this button okay. 04:30.090 --> 04:31.050 Inside it. 04:31.090 --> 04:32.330 What we need to do. 04:32.370 --> 04:41.010 We can set a circular progress indicator for uh for displaying that we are making calculation and the 04:41.010 --> 04:43.370 TensorFlow model is working. 04:43.570 --> 04:45.530 So if is loading. 04:45.730 --> 04:50.490 What we need to do create a circular progress indicator. 04:50.780 --> 04:52.380 Said the modifier. 04:52.380 --> 04:58.380 Set the color and make a spacer ATP text. 04:58.500 --> 05:06.620 Set it to predicting and else if it is not, go and display predict mileage. 05:06.780 --> 05:08.020 Then create. 05:08.020 --> 05:14.540 Outside this button we need to display our predictions result. 05:14.540 --> 05:18.500 So let me create a spacer modifier. 05:18.700 --> 05:21.460 Then the predictions result. 05:21.460 --> 05:30.740 If it is not null, go and create an mpg parameter and pass it to the prediction results card. 05:30.860 --> 05:39.980 Okay, so if there is a prediction result, go and display it in the in the prediction result card. 05:40.060 --> 05:43.980 Okay this is our application. 05:44.180 --> 05:47.780 Now let's test our amazing application.