Android provides widgets for date and time.
Date widget
Datepicker and datepickerdialog. datepickerdialog is a simple container for loading datepicker ,. There is a trigger method ondatechangedlistener () and ondatesetlistener () respectively ().
In this example, we set two buttons and a textview. When the button is clicked, The datepickdialog is displayed.
Step
[Android Notes] widgets and Android WidgetsWhat is a Widget? The App Widget is a desktop tool provided by android. It can be embedded into the desktop and can regularly update its own data.As shown in:
How to Create widgets?
The following components are required to create
/birthday_width_provider.xml and the contents are as follows.Appwidget-provider Xmlns:android= "Http://schemas.android.com/apk/res/android"Android:minwidth= "150DP"Android:minheight= "120DP"Android:updateperiodmillis= "43200000"Android:initiallayout= "@layout/birday_widget"android:configure= "Cn.wei.flowingflying.testwidget.ConfigBirthDayWidgetActivity"Android:previewimage= "@drawable/gift"Android:resizemode= "Horizontal|vertical" >In the widget list,
below which the App Widget would be illegible or otherwise unusable. Using These attributes allows the user to resize the widgets to a size that may be smaller than the default widget size Def Ined by Theminwidthandminheightattributes. Introduced in Android 3.1. See the app Widgets Design guidelines for more information on sizing your app
Teach you how to make Android Widgets
Recently, we have to make a bar code scanner (barcode scan) widget in the project and put it on the desktop of the mobile phone. I checked some information on the Internet, investigated the information, and shared the methods with you.
First, let's talk about what widgets are. Widgets
For more information about the previous configurations such as mainfest. XML, XML/widget, Res/layout/my_widget, see the API documentation.
I. Configure widgets.
You need to pay attention to the following points for setting the pluate of widgets:
Intent intent = new Intent(); intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, mAppWidgetId); intent.setAction(AppWidgetManager.ACTION_
. This is an optional activity. When you add an app widget, it is loaded and allowed to modify the settings of the app widget during creation.
The following sections describe how to create these components:
Declare An application widget in the list
First, declare the appwidgetprovider class in the androidmanifest. xml file of the application, for example:
The
The The widget is broadcast to appwidgetprovider.
The
· Android: Name-specifies the meta
specifies the widget width. These two values cannot be specified at will. It is best to set them based on the number of rows and columns occupied by widgets to be placed. For example, if a widget contains three rows and two columns, minHeight should be (3*74)-2 = 220, and minWidth should be (2*74)-2 = 146
(4) android: updatePeriodMillis. The value is the refresh time
ObjectiveHello everyone, to bring you Android开发工程师文集-1 小时学会Widget小组件开发 an overview, I hope you likeLearn to use Widgets (widget)Widgets Widget is very convenient, very quick, can be personalized, their own customization, related features, you can update the latest content in real time.
Widget layout, widget co
Qt on Android: Enables full screen display of Qt Widgets and Qt Quick applications. androidwidgets
There are many Android system versions. The newer version is 4.4, and the older version is 2.3. Android applications developed by Qt on Android are non-full screen by default o
Document directory
Gridlayout
Getting started
Sizes, margins and alignment/gravity
Flexibility
Emulating features from other layouts
The phases of the layout operation
Conclusion
10 November 2011
Http://android-developers.blogspot.com/2011/11/new-layout-widgets-space-and-gridlayout.html
New layout widgets: space and gridlayout
[This post is by Philip Mil
Development Idea and demo of appwidget Widgets
This articleArticleLet's talk about the development process of the "Window widget" (also called the main screen widget) in the Android system. What Is A Window widget?
It refers to the independent view displayed on the home screen (but filled with data ). The data content of these views is updated by the background process. Remoteviews is used
Display
Long time no blog, do not know how to write blog, and recently suddenly want to write a blog to help more people, but do not know what to write good?Well I admit I'm a little lazy, but the program ape should not be lazy oh, I want to be a good boy.Well, let's start by introducing the main contents of today!Widgets a small widget for a desktop personally, I think it is very common, do not know the gods do no
Http://www.cnblogs.com/TerryBlog/archive/2010/07/29/1788319.html
I was planning to continue the API demos series in the evening, but this afternoon I was bored with playing a desktop component app widget. I am very interested in it, I encountered a lot of problems and had been solving the problem until PM. I can only blame myself for not understanding deeply, but I finally solved the problem. I can write some insights and give them an explanation. The outline of this article is as follows:
1
Application of small pendant (also known as a small window pendant) in the android1.5 is the first time, later, android3.0 and android3.1 have been greatly developed, they can show some of the application of common information or some relevant information to the desktop, the standard Android mirror image has many of its own Small pendants, such as: Alarm clock, music, etc.
Figure 1. Example app
The outline of this article is as follows:
1. AppWidget framework class
2. How to Use widgets in Android
3. Main Types of AppWidget framework
4. DEMO
1. AppWidget framework class
1. AppWidgetProvider: inherits from BroadcastRecevier and receives notifications when AppWidget applies update, enable, disable, and delete. OnUpdate and onReceive are the most common methods. They receive update notifications.
2.
The article can only be reproduced in non-commercial nature, and can not be accompanied by virtual currency, points, register and other additional conditions. Reprint must indicate the source http://blog.csdn.net/flowingflying/and the author @ kay Wind Wei.Defined by the widget. We saw our testwidget in the widget list. When we drag the widget to the homepage. Suppose the Java class of android:configure is defined in Appwidet-provider, and the configuration activity is aroused immediately after
In Android development, sometimes our app design more features, need to be more concise as needed to provide users with clearly used features, the desktop widget is a good choice, that is, the app widget, below we use Android Studio to create a simple desktop widget:
Select New->widget->app Wight
Next set up some information about the app widget where minimum Width and M Inimum height is the si
exploration to the left
3. Right Exploration --> the right side is occupied by folder and the right side of exploration is stopped.
4. On the basis of the current continuous area (), explore up --> judge that cells 1 and 2 are empty, and add them to cellinfo. At this time, the continuous space becomes [,]; --> continue to explore up --> occupied, stop exploring up
5. On the basis of the current continuous region [,], explore downward, be occupied, st
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