A simple example to understand KNN algorithm.

(You can download Iris data set here.)

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All you have to do is follow these steps:

Step 1: Go to your project directory in VS Code.

Step 2: Open terminal.

Step 3: Run “cd android”.

Step 4: Run “.\gradlew signingReport”.

And then tadaa! It will display like that:

> Task :app:authReport

Variant: debug

Config: debug

Store: C:\Users\User\.android\debug.keystore

Alias: AndroidDebugKey

MD5: 6B:64:......

SHA1: 52:B0...   //SHA1 ***

SHA-256: 80:BF:B3:A8:....

Valid until: Monday, 10 May, 2050

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You can try to set AppBar Border like this :

appBar: AppBar(
    shape: Border(bottom: BorderSide(color: Colors.red)),
     ....

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You can use TabBar indicator like this:

TabBar(
            controller: _tabController,
            indicatorColor: Colors.grey,
            labelColor: Colors.black,
            unselectedLabelColor: Colors.grey,
            tabs: [
                   ...
            ],
)

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You can make Instagram change account UI with this. You can delete the margins in this row margin: EdgeInsets.only(bottom: 50, left: 12, right:12).Then it will be exactly the same UI with Instagram account changer Dialog.

Here is the source code :

floatingActionButton: FloatingActionButton(
  onPressed: () {
    showGeneralDialog(
      barrierLabel: "Label",
      barrierDismissible: true,
      barrierColor: Colors.black.withOpacity(0.5),
      transitionDuration: Duration(milliseconds: 700),
      context: context,
      pageBuilder: (context, anim1, anim2) {
        return Align(
          alignment: Alignment.bottomCenter,
          child: Container(
            height: 300,
            child: SizedBox.expand(child: FlutterLogo()),
            margin: EdgeInsets.only(bottom: 50, left: 12, right:12),
            decoration: BoxDecoration(
              color: Colors.white,
              borderRadius: BorderRadius.circular(40),
            ),
          ),
        );
      },
      transitionBuilder: (context, anim1, anim2, child) {
        return SlideTransition(
          position: Tween(begin: Offset(0, 1), 
                          end: Offset(0,0)).animate(anim1),
          child: child,
        );
      },
    );
  },
)

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To perform network operations in your application, your manifest must include the following permissions:

<manifest xlmns:android...>
 ...
 <uses-permission android:name="android.permission.INTERNET" />
 <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />  <application ...
</manifest>

Permission name is case sensitive. So wrong case means your application won’t get permission.

Here is the other permission you might want to use for your app.

<manifest xlmns:android...>
 ... <uses-permission android:name="android.permission.INTERNET" />
 <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
 <uses-permission android:name="android.permission.ACCESS_LOCATION_EXTRA_COMMANDS" />
 <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
 <uses-permission android:name="com.example.towntour.permission.MAPS_RECEIVE" />
 <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
 <uses-permission android:name="android.permission.CALL_PHONE" />
 <uses-permission android:name="android.permission.READ_PHONE_STATE" />
 <uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES" /> <application ...
</manifest>

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You can solve this problem by setting resizeToAvoidBottomInset: false in Scaffold().

( resizeToAvoidBottomPadding is deprecated. )

Use resizeToAvoidBottomInset :

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold( 
     resizeToAvoidBottomInset : false,
     appBar: AppBar(
        title: Text('First App'),
      ),
      ...
    );
  }
}

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