Is there code for Snackbars in Android L or are we expected to implement them ourselves?

问题

The Material design website mentions a new Toast-like element called a Snackbar: http://www.google.com/design/spec/components/snackbars-and-toasts.html

The Android L preview SDK documentation (sorry can't link since it's only downloadable) doesn't have any mention of Snackbar in the classes list or as a modifier in the Toast class documentation. Am I missing something obvious or should I build my own Snackbar.java?

回答1:

Update 2015-05-29:

Google released a Design Support Library which includes a Snackbar and other Material Design widgets.

The Snackbar lib mentioned in the original answer is now deprecated.

Original answer

I'm sure Google will eventually include it in a future SDK, along with a Floating Action Button that is also missing in the preview SDK.

As @friedrich nietzche pointed out, I implemented a library to include a Snackbar in your project.

https://github.com/nispok/snackbar

Hope it helps!

回答2:

FWIW,

It would appear that there is no Snackbar implementation in the L Developer Preview. I've also implemented a Snackbar library with the intentions of being as close to the material design guidelines as I can. Thanks.

回答3:

Mabye take a look at this here. http://www.williammora.com/2014/08/snackbar-android-library.html

I am guessing the native version will show up in the sdk eventually. It is a bit odd I agree.

回答4:

Snackbar is effectively just a Crouton with some margins. Crouton in its current form only supports adding to start (0th item) of a ViewGroup, however you can find the very "strayan" enhancement to Crouton, DownUnderMode, at my github. Just beware that the official Crouton library and DownUnderMode version are a little out of sync (which will hopefully be fixed in the year 2058 when the DownUnderMode pull request is accepted).

回答5:

Using design library we can implement for all the versions of Android 2.1 onward.

Here is the working example code http://www.feelzdroid.com/2015/06/snackbar-android-example-using-design-support-library.html.

If you need any help, drop comment.

回答6:

Here is simple way to implement snackbar in android

Step 1. Add support library 23 and compile your project with

compile 'com.android.support:appcompat-v7:23.0.1'

Step 2. Add coordinate layout in your activity file

<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/coordinatorLayout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">


</android.support.design.widget.CoordinatorLayout>

Step 3. Now add following code in your MainActivity.java to implement snackbar

public class MainActivity extends AppCompatActivity {

    CoordinatorLayout coordinatorLayout;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        coordinatorLayout = (CoordinatorLayout) findViewById(R.id.coordinatorLayout);
        ShowSnack();
    }

    public void ShowSnack() {
        Snackbar snackbar = Snackbar.make(coordinatorLayout, "Snackbar Label", Snackbar.LENGTH_LONG);
        snackbar.setAction("Action", new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Toast.makeText(MainActivity.this, "Action", Toast.LENGTH_LONG).show();
            }
        });
        snackbar.setActionTextColor(Color.RED);
        View snackbarView = snackbar.getView();
        snackbarView.setBackgroundColor(Color.DKGRAY);
        TextView textView = (TextView) snackbarView.findViewById(android.support.design.R.id.snackbar_text);
        textView.setTextColor(Color.YELLOW);
        snackbar.show();
    }
}

Hope this will work for you.

For more android tutorial please follow this blog: Trinity Tuts

来源：https://stackoverflow.com/questions/25633695/is-there-code-for-snackbars-in-android-l-or-are-we-expected-to-implement-them-ou