android refresh button in actionbar

not need to handle the up button ' s event.Because the system now knows mainactivity as the displaymessageactivity parent activity, when the user presses the UP ARROW key, the system navigates to the parent activity appropriately-if you do not need to handle the UP button event.For more information on the navigation, see providing up navigation.For more information about navigating up, see providing up nav

Click on the button, the first automatic Drop-down refresh, you can manually refresh, after the refresh, the last one more than one row of data. There are four tabs. A couple of days ago, the instructor asked to make a reservation for an undergraduate student in the room, starting from here. Do do to meet a lot of p

Android custom View image (imitating a 360 refresh ball to customize a SeekBar)Overview: 360 the refresh ball of the security guard (just call it refresh the ball, because I really don't know what it is called, not the refresh ball in dota !!), It is as lively and cute as wa

Drop-down refresh a lot of places are used, Sina Weibo,, Baidu NewsHere we use an open source library called: PulltorefreshOpen Source Address: Https://github.com/chenyoca/pull-to-refresh: Https://github.com/chenyoca/pull-to-refresh/archive/master.zipAfter extracting the code, import it into the project via Ecplise.Library path Reference error may occur after imp

Create a new menu in your code today:public boolean Oncreateoptionsmenu (Menu menu){Menu.add (0, 1, 1, "item1");Menu.add (0, 2, 2, "item2");return Super.oncreateoptionsmenu (menu);}The result is not visible at run time, Showasaction is already set to "always"Looked up some books, Starting with Android3.0, Android does not require a menu button on a mobile device, and some

Onscroll (abslistview view, int firstvisibleitem, int visibleitemcount, int totalitemcount) { This.lastitem = Firstvisibleitem+visibleitemcount;this.totalitem = Totalitemcount;} @Overridepublic void onscrollstatechanged (abslistview view, int scrollstate) {if (This.totalitem = = lastitem Scrollstate = = Scroll_state_idle) {log.v ("isloading", "yes"), if (!isloading) {isloading=true;footer.setvisibility ( view.visible); Onloadmore.loadmore ();}}} public void Setloadmorelisten (Onloadmore onloadm

BackgroundA typical ListView, each item displays a TextView, represents a task, needs to implement two edits: one is to use a checkbox to identify the task has been completed, another to implement the edit is delete task. The completed checkbox is placed directly in the layout, but the deletion does not want to use ContextMenu for editing, and for lists like iOS, it is triggered by gestures to each item in the list. This implementation is not difficult, you can use a Viewswitcher,checkbox and de

Android custom control-ios-like button When we develop client products in the company, we will find that the difference between android and ios is that ios has benefited from the elaborate design of "Old Joe", and the interface user experience has been superb. android adheres to the open-source idea, the hundreds of u

Today in a similar to Baidu post-paste things. Layout: Above is a actionbar title bar, and then a GridView layout, in the Java code to dynamically load the attention of the stick, all ready, very happy to fix it!Now you need to click on the option to enter a bar, then the problem is--gridview button Click event Onitemclick cannot respond.So, the main trick is still in the Com.android.internal.r.attr.buttons

and a click. When a long press is made, the water waves slowly spread. If a click is made, it will spread quickly. Demo effect (the animation effect is not properly recorded because no Android simulator is installed) For the implementation process, refer to the instructor's blog and the code comments (the comments are very detailed and it is not difficult to understand) MyButton. java Package com. example. myreveallayout; import

appear the pattern of Wave diffusion, demo (see last) in the first button is the use of the ripple effect. The implementation is simple, to achieve one such drawable The first color is the ripple color, the item inside specifies background normal color, can be a shape, also can be a drawable, can also be a selector. Set to the background of the button If the theme of the entire program uses meteria

(Canvas, Paramview, Paramlong); Canvas.Restoretocount(I); return bool2;}The method of judging is as follows:private boolean drawBackground(View paramView) { if (mIsFollowed paramView == mUnFollowTv) { return true; } else if (!mIsFollowed paramView == mFollowTv) { return true; } return false;}At this point, the whole effect is exactly the same as the knowledge, the refresh process is flowing, very praise. The effect is

();} /** * Refreshes the current state */protected void Flushstate () {if (currentstate) {slidebtn_left = Backgroundbitmap.getwidth ()-Slidebutton. GetWidth ();} else {slidebtn_left = 0;}}}Define it in the layout file:In this case, because there is no logic to write any clicks to trigger the business, just a simple control, so there is no more code in the mainactivity:Package Com.example.togglebutton;import Android.app.activity;import Android.os.bundle;public class MainActivity Extends Activity

Android development often encounters checkbox and button in listview. Here there are three main problems: 1. when the listview contains a checkbox or button, the listview item cannot respond to the click event. This is mainly because the focus retrieval capability of the checkbox or button is higher than that of the li

, the left side of the slide button is 0Call the invalidate () method to refresh the current viewMytogglebtn.java Packagecom.tsh.myswitchbtn;ImportAndroid.content.Context;ImportAndroid.graphics.Bitmap;Importandroid.graphics.BitmapFactory;ImportAndroid.graphics.Canvas;ImportAndroid.graphics.Paint;ImportAndroid.util.AttributeSet;ImportAndroid.view.View;ImportAndroid.view.View.OnClickListener; Public classMyto