How to dismiss a Snackbar using it's own Action button?

问题

Android design support library now includes support for Snackbar.

I've used the following code to create one:

Snackbar.make(findViewById(R.id.root_layout), result, Snackbar.LENGTH_LONG)
        .setAction("Dismiss", new View.OnClickListener() {
            @Override
            public void onClick(View v) {

            }
        }).show();

The snackbar can be dismissed by a swipe. However, I also want to dismiss it using its own Action Button (created using the setAction function).

However there doesn't seem to be any function available that can do that.

回答1:

For Java,

The .make method returns a Snackbar object. Save an instance of that object by making it final. Then, in the onClick(), call .dismiss:

final Snackbar snackBar = Snackbar.make(findViewById(android.R.id.content), "Snackbar Message", Snackbar.LENGTH_LONG);

        snackBar.setAction("Action Message", new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                // Call your action method here
                snackBar.dismiss();
            }
        });
        snackBar.show();

For Kotlin,

        Snackbar.make(
            findViewById(android.R.id.content),
            "Snackbar Message",
            Snackbar.LENGTH_INDEFINITE
        ).setAction("Action Message") {
            // Call action functions here
        }.show()

回答2:

Implement a click action and let it empty . Clicking on empty click action will dismiss snackbar .

Snackbar.make(coordinatorLayoutView, "Service Enabled", Snackbar.LENGTH_LONG)
    .setAction("DISMISS", new View.OnClickListener() {
        @Override
        public void onClick(View v) {
        }
    })
    .show();

回答3:

When you use Snackbar.LENGTH_LONG you do not need action button for dismiss , after second automatically dismiss. You should use this code :

 Snackbar snackbar = Snackbar.make(relativeLayout, "Your Message", Snackbar.LENGTH_INDEFINITE);
            snackbar.setAction("dismiss", new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    snackbar.dismiss();
                }
            });

            snackbar.show();

Be careful this line :

Snackbar.LENGTH_INDEFINITE

回答4:

This is an old question, but I just want to share my own experience around similar feature on Snackbar. So we got a design for our app, that snackbar should be shown indefinitely and user should be able to dismiss it.. but there shouldn't be DISMISS button inside it (Google is not recommending Dismiss or Cancel actions inside snackbars anyway). Our snackbar had to be dismissed just by tapping on it.

The only solution, working for us, was in the end (I am using retrolambda here, but standard View.OnClickListener could be used as well):

final Snackbar snack = ... /* create proper snackbar as alway */
snack.getView().setOnClickListener(v -> snack.dismiss());

Note getView() call in the middle.

回答5:

I had the same problem. When I used .dismiss() the animations looked different and there were two problems:

FAB does not go down again
the SnackBar itself does not slide down like it would on a Click

Looking into the original Android Source Code for Snackbar I found the following solution:

View snackbarView = snackbar.getView();
Button snackbarActionButton = (Button) snackbarView.findViewById(android.support.design.R.id.snackbar_action);
//snackbarActionButton.setSoundEffectsEnabled(false); // might be considered in order not to have a confusing sound because nothing was clicked by the user

Then, I would call the .performClick on the snackBarActionButton

snackBarActionButton.performClick();

Link to the Android Source Code for Snackbar: https://android.googlesource.com/platform/frameworks/support/+/refs/heads/master/design/src/android/support/design/widget/Snackbar.java

回答6:

Snackbar (from 'com.android.support:design:23.2.1') support many types of dismiss action. You can create a simple filter by using event, such as in this example:

Snackbar.make(view, wornMessage, Snackbar.LENGTH_LONG).setActionTextColor(context.getResources().getColor(R.color.primary))
    .setCallback(new Snackbar.Callback() {
        @Override
        public void onShown(Snackbar snackbar) {
            super.onShown(snackbar);
        // when snackbar is showing
        }

        @Override
        public void onDismissed(Snackbar snackbar, int event) {
            super.onDismissed(snackbar, event);
            if (event != DISMISS_EVENT_ACTION) {
               //will be true if user not click on Action button (for example: manual dismiss, dismiss by swipe
            }
        }
    })
    .setAction("Undo, view1 -> {
        // if user click on Action button
}).show();

Snackbar's dismiss types:

/** Indicates that the Snackbar was dismissed via a swipe.*/
public static final int DISMISS_EVENT_SWIPE = 0;
/** Indicates that the Snackbar was dismissed via an action click.*/
public static final int DISMISS_EVENT_ACTION = 1;
/** Indicates that the Snackbar was dismissed via a timeout.*/
public static final int DISMISS_EVENT_TIMEOUT = 2;
/** Indicates that the Snackbar was dismissed via a call to {@link #dismiss()}.*/
public static final int DISMISS_EVENT_MANUAL = 3;
/** Indicates that the Snackbar was dismissed from a new Snackbar being shown.*/
public static final int DISMISS_EVENT_CONSECUTIVE = 4;

P.S. In sample code used lambda expressions (by RetroLambda)

来源：https://stackoverflow.com/questions/30729312/how-to-dismiss-a-snackbar-using-its-own-action-button

标签

android

android-snackbar