android-actionbar | 易学教程

Animating action bar icons appearing on fragment changes

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My current app has fragment and slidingUpCard navigation. Each one of them has a different set of active ActionBar elements and the buttons change with the screen. I was wondering if there was a way of animating the buttons coming and going similar to what android:animateLayoutChanges would do for a LinearLayout . On your question. I'm not sure if it is possible to add animateLayoutChanges to the ActionBarContainer that holds the ActionBar . But still you can access the ActionBarView in same manner as you will see a bit down in this answer. Hierarchy: ActionBarContainer -> ActionBarView ->

How to make SearchView that covers the entire ActionBar/Toolbar

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问题 How does one create this? If you try using a Toolbar and you have inflated MenuItems you'll quickly find out that your Toolbar layout will shrink in width so it does not overlay the MenuItems. The only thing that comes to mind is inflating a layout and adding it to the Window as an overlay that sits on top of the ActionBar. Remember, this is not a problem if you do not need to inflate MenuItems in your Toolbar/ActionBar as then you are given the full width to occupy. 回答1: So I went with the

Actionbar and ListActivity in one Activity

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I have a program which shows lists of files in directories on the SDCARD and when the user clicks on a file it opens the PDF up. For instance one activity will display the contents of one folder. I have been wanting to add the ActionBar for navigation and can get the ActionBar to work in its own activity and my ListActivity to work in its own activity, however I cannot get them to work together. I am not sure how to combine the two so that I end up with one activity that displays the action bar and the file list in the one Activity? The Actionbar Activity starts with public class

How to customize ActionBar in Android (ActionbarSherlock)?

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问题 I have used ActionBarSherlock in my application for providing ActionBars to pre honeycomb devices. I want to use Light.DarkActionBar Theme in, How can I customize following for parts of the ActionBar (see image) Background color of ActionBar Background Image for ActionBar tab bar The bottom line which represents the selected tab The divider between tabs... I have tried using following settings, Though I have achieved some success but the result however doesn't look as expected, <item name=

Update ActionBar from Adapter

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问题 I have a basket icon with count notification on it in actionbar for showing number of goods in shopping basket. also I have a custom view containing a button for add goods to shopping basket. I want that when I click on button (in custom view) notification count on basket icon increases. I use this function in main activity to update notification count but notification does not update. public static void updateCountBasket(final int number , int id , View view ,Context context) { if (view

Android action bar overflow menu not displayed in portrait mode

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I have a standard Android action bar (I'm not using the compatibility library) with a SearchView and a handful of text-only menu items. I'd like to have the SearchView always expanded and the remaining items in the overflow menu. The code I have so far works fine on a tablet and on my Nexus 5 in landscape mode, but when the phone is in portrait mode, the overflow menu isn't displayed. If I add the collapseActionView attribute to the SearchView, the overflow menu is properly displayed, but I'd like to keep the search widget fully expanded. Here's the XML for my options menu: <menu xmlns:android

Android: How to make the SearchView take up the entire horizontal space in ActionBar?

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问题 In the following screenshot, the SearchView widget in the ActionBar does not take up the entire space available. I need it to take up all the horizontal space present in the ActionBar (so it spans the entire screen horizontally). What I tried: Programatically, tried this in the onCreateOptionsMenu : View searchViewView = (View) searchView; searchViewView.getLayoutParams().width=LayoutParams.MATCH_PARENT;` This gives: java.lang.NullPointerException: Attempt to write to field 'int android.view

Android Action Bar not showing on displayOptions - useLogo

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问题 I have an actionBarStyle that I have implemented in my app for my ActionBar . Here is the xml code below: <resources xmlns:android="http://schemas.android.com/apk/res/android"> <style name="MyActionBarTheme" parent="@android:style/Theme.Holo"> <item name="android:windowActionBarOverlay">true</item> <item name="android:actionBarStyle">@style/MyCustomActionBar</item> </style> <style name="MyCustomActionBar" parent="@android:style/Widget.Holo.ActionBar"> <item name="android:background">@android

Disable ActionBar tab indicator programmatically

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问题 Is it possible to disable the tab indicator using programmatically/ Java code ? This is how I am setting other tab properties : actionBar = getSupportActionBar(); actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS); actionBar.setHomeButtonEnabled(false); actionBar.setDisplayShowTitleEnabled(false); actionBar.setStackedBackgroundDrawable(new ColorDrawable(Color.parseColor("#FFFFFF"))); ActionBar.TabListener methods : @Override public void onTabSelected(ActionBar.Tab tab,

How to dynamically set number of swipeable tabs in Action Bar with Fragments at runtime

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I am referring this link for swipeable tabs using fragments . It worked for me, but what if I need to add the number of tabs dynamically and not pre assign the number of tabs? For instance, some of my logic gives me output at times 2 strings in anarray and at times 4 strings in an array. And according to the logic I need to set the number of tabs in action bar at runtime. How can I achieve this? Can anyone show me how to achieve what I need? STEP 1: Define your TabsPagerAdapter as follows: public class TabsPagerAdapter extends FragmentPagerAdapter { private ArrayList<Fragment> list; public