adv_async_widget

Utility widgets for standard future and stream uses.

New advanced async builders

This package contains 2 utility classes:

• AdvFutureBuilder
• AdvStreamBuilder

AdvFutureBuilder

This class replace the standard FutureBuilder allowing you to have multiple build methods based on the connectionState.

Usage example:

• case with standard FutureBuilder

FutureBuilder<String>(
    future: exampleFuture,
    //old standard builder with one method for everything
    builder: (context, snapshot) {
      if(snapshot.connectionState == ConnectionState.waiting) {
        return CircularProgressIndicator();
      }
      if(snapshot.hasError) {
        return Text("Error: ${snapshot.error}");
      }
      return Text(snapshot.data ?? "No data");
    }
)

• case with AdvFutureBuilder

AdvFutureBuilder<String>(
    future: exampleFuture,
    //three different methods, one for each case
    onWait: (context) => CircularProgressIndicator(),
    onError: (context, error) => Text("Error: $error"),
    onData: (context, data) => Text(data ?? "No data"),
)

AdvStreamBuilder

This class replace the standard StreamBuilder allowing you to have multiple build methods based on the connectionState. (yeah, they're the same, but this one is for stream instead of future)

Usage example:

• case with standard StreamBuilder

StreamBuilder<String>(
    stream: exampleStream,
    //old standard builder with one method for everything
    builder: (context, snapshot) {
      if(snapshot.connectionState == ConnectionState.waiting) {
        return CircularProgressIndicator();
      }
      if(snapshot.hasError) {
        return Text("Error: ${snapshot.error}");
      }
      return Text(snapshot.data ?? "No data");
    }
)

• case with AdvStreamBuilder

AdvStreamBuilder<String>(
    stream: exampleStream,
    //three different methods, one for each case
    onWait: (context) => CircularProgressIndicator(),
    onError: (context, error) => Text("Error: $error"),
    onData: (context, data) => Text(data ?? "No data"),
)

Full example

You can find a full flutter example on pub example tab or inside GitHub example