how to use emulators on android

Actionbar Introduction Method: There are several, starting with the Android 3.0 (API lever 11), all activity using the Theme.holo theme (or its subclasses) contains action Bar, when Targetsdkversion or minsdkversion property is set to "11" or greater, it is the default theme. In order to be compatible with the earlier versions of Android3.0, Actionbar is typically implemented through the appcompatactivity implementation of extends integration support

When we do development in peacetime, inevitably use a variety of dialog boxes, I believe that there are other platform development experience friends will know that most of the platform only provides a few of the simplest implementation, if we want to achieve their specific needs of the dialog box, you may first think, through inheritance and other means, Rewrite our own dialog box. Of course, this is a good way to solve the problem, but the general s

" the android:src= "@mipmap/ic_launcher" the app:fabsize= "normal"/> the the Android.support.design.widget.CoordinatorLayout>In the outermost use of a coordinatorlayout to master the layout, in the layout of life using the namespace named app, this layout is a powerful framelayout, that is, the role of the layout of the above results. You can see the code at the end of which we put a floatingactiongbutton, because this control is placed in this layou

Android Studio installation configuration, Environment setup detailed steps and basic use, android installation ConfigurationPreface The installation, configuration, and usage of Android Studio are coming ~ Not to mention, the following describes how to install and configure JDK (and its environment variables are confi

In the Android API you can find a lot of places that use integer sets as parameters, and look at the examples first. LinearLayout is a familiar UI basic element that has a directional attribute in it, which can be set in the following ways: Copy Code code as follows: linearlayout.setorientation (int); When used, this is usually the case: Copy Code code as follows: Line

Preface SQLite is a lightweight small database, although relatively small, but the function is comparatively perfect, some common database basic functions also have, in the current embedded system to use the database is more, because it occupies very little system resources. Android system is no exception, but also the use of SQLite, this section of the study in

string is the key of the key value defined in the Java Frecontext, then the associated frefunction will be new and automatically invoke the Call method 4.java return data to Flash: 1) Flash: Extcontext.addeventlistener (Statusevent.status,onstatushandler); 2 Java: Frecontext.dispatchstatuseventasync ("Code", "level"); 3) Onstatushandler (e:statusevent) {E.code on = = "Code", e.level== "level"} 5. Generate ANE Files Create a new directory as a working directory (anebuild) and creat

You can use this SDK to develop map applications for Android mobile devices, and by invoking the Map SDK interface, you can easily access the Baidu Map service and data to build a rich, interactive lbs (Map Class) application. Baidu Map all the services provided by the Android SDK are free of charge, and the interface is used without limit. You will need to appl

[Android Notes] use and implementation of the pull-down and refresh components and Android notes drop-down ComponentsIf you need to implement pull-down refresh in a project, you can choose from the following options:1. Use the open-source library Android-pullToRefresh.2.

virtually increase the volume of the APP. • Operating Environment Considerations: If your application is oriented to a high version of the operating environment, consider using this method, if the user's operating environment is Android 2.2 need to give up the method. • Application Style Considerations: If your application is for a high version of the operating environment, and you use the specified font

Android learning 8 (use of android fragment) Fragment is a type of UI Fragment that can be embedded in an activity. It allows programs to make more reasonable and full use of the screen space. First, create a flat simulator 1034*600 and use android4.2.2. create an

Prior to learning Oracle, simply that the database exists only on the server side, learning Android only to find that Android and iOS themselves are "carry" the database--sqlite, is a lightweight, embedded, relational database, is Android, A widely used database system such as iOS. Used to store the local state. Just write a realization of the function of the new

The example of this article describes the Android development of the Sqlite3 command line simple use method. Share to everyone for your reference, specific as follows: First you need to navigate to the directory where the database is located, and then use the command sqlite3 databasename (the name of the db) to enter Common commands: 1. Table lists the data ta

have their own advantages and disadvantages, and we need to use them for different situations. 1. Use the Parcelable interface when more memory is required. Serializable produces a large number of temporary variables when serialized, causing frequent GC, compared to parcelable performance (after all, Android), so when using memory ( For example, serializing an

Recently things have been very busy, a new project to rush out, but many functions have to redo, has been writing code, Debug. Today, because a new program to use fragment to do, although the previous use of fragment, but did not study carefully, today by writing an article to record the use of fragment. This article mainly refers to the introduction of the

There are many useful tools in the Android SDK Kit to help programmers develop and test Android apps, and improve their productivity dramatically. One of the visual debugging tools called Hierachy Viewer can easily help developers analyze, design, debug and adjust UI interfaces to improve development efficiency. This article will be a practical example of how to use