java addcallback函数_Java Snackbar.addCallback方法代码示例

import android.support.design.widget.Snackbar; //导入方法依赖的package包/类

public void removeItemWithSnackbar(Activity activity, final int position, final SnackbarListener listener)

{

getSwipeManager().performFakeSwipe(mVHs.get(position), SwipeableItemConstants.RESULT_SWIPED_LEFT);

if (mChatroomObjects.get(position) != null)

{

final ChatroomRecyclerObject huehuehue = removeItem(position);

if (huehuehue != null)

{

final SharedPreferences mSharedPrefs = PreferenceManager.getDefaultSharedPreferences(activity);

huehuehue.setIsPinned(false);

String chatroomName = huehuehue.getName();

String snackTextDel = "Deleted " + chatroomName;

final String snackTextRestore = "Chatroom restored!";

final SpannableStringBuilder snackTextDelSSB = new SpannableStringBuilder().append(snackTextDel);

final SpannableStringBuilder snackTextRestoreSSB = new SpannableStringBuilder().append(snackTextRestore);

if (mSharedPrefs.getBoolean("darkTheme", false))

{

snackTextDelSSB.setSpan(new ForegroundColorSpan(activity.getResources().getColor(R.color.colorDark)), 0, snackTextDel.length(), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);

snackTextRestoreSSB.setSpan(new ForegroundColorSpan(activity.getResources().getColor(R.color.colorDark)), 0, snackTextRestore.length(), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);

}

else

{

snackTextDelSSB.setSpan(new ForegroundColorSpan(activity.getResources().getColor(R.color.white)), 0, snackTextDel.length(), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);

snackTextRestoreSSB.setSpan(new ForegroundColorSpan(activity.getResources().getColor(R.color.white)), 0, snackTextRestore.length(), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);

}

final View parentLayout = activity.findViewById(android.R.id.content);

Snackbar snackbar = Snackbar

.make(parentLayout, snackTextDelSSB, Snackbar.LENGTH_LONG)

.setAction("UNDO", new View.OnClickListener()

{

@Override

public void onClick(View view)

{

Snackbar hue = Snackbar.make(parentLayout, snackTextRestoreSSB, Snackbar.LENGTH_SHORT);

if (mSharedPrefs.getBoolean("darkTheme", false))

{

hue.getView().setBackgroundColor(Color.WHITE);

}

hue.show();

addItem(huehuehue);

listener.onUndo();

}

});

if (mSharedPrefs.getBoolean("darkTheme", false))

{

snackbar.getView().setBackgroundColor(activity.getResources().getColor(R.color.white));

}

snackbar.show();

snackbar.addCallback(new BaseTransientBottomBar.BaseCallback()

{

@Override

public void onDismissed(Snackbar transientBottomBar, int event)

{

switch (event)

{

case DISMISS_EVENT_TIMEOUT:

listener.onUndoExpire(huehuehue.getUrl());

break;

}

}

});

}

}

}