how to use emulators on android

follows: Xmlns:android= "Http://schemas.android.com/apk/res/android" android:orientation= "Vertical" Android:layout_width= "Fill_parent" android:layout_height= "Fill_parent" > Android:id= "@+id/textgroup" Android:layout_width= "Fill_parent" android:layout_height= "Fill_parent" android:paddingleft= "40px" android:paddingtop= "6PX" Android:paddingbottom= "6PX" Android:textsize= "15SP" android:text= "No Data" /> Childs.xml is a

control spinner Spinner sp= (Spinner) Findviewbyid (r.id.spinner1); Interpretation 1. Setadapter (Spinneradapter adapter), seen from the inheritance relationship of the class, Arrayadapter is the indirect implementation class of the Spinneradapter interface 7. Implementing the selection event (using an anonymous class to implement the interface) Sp.setonitemselectedlistener (New Onitemselectedlistener () { //Parent: Spinner View for control: Display text TextView Posit

Starting forum for Android bus. Id:android_binA. Required tools:1. Virtual machine software (This article uses virtual box as an example),2.android x86 Mirror, Http://www.android-x86.org/download, the current 4.0 and 3.2 mirrors do not support Ethernet, can only use 2.3, Recommended Android-x86-2.3-rc1-eeepc.iso.Two. I

. dexexception:library dex files is not supported in Multi-dex mode errorError:execution failed forTask': App:dexdebug '. > com.android.ide.common.internal.LoggedErrorException:Failed toRun command:$ANDROID _sdk/build-tools/android-4.4W/dx--dex--num-threads=4--multi-dex... Error Code:2output:unexpected top-level EXCEPTION:com.android.dex.DexException:Library DexFilesIs notSupportedinchMulti-dex mode atCom.a

On the Android XUTILS3 framework using the method (a) article, mainly introduced the XUTIL3 annotation module, network module, picture loading module, today to bring you a database module explanation, now the mainstream ORM framework, such as Ormlite,greendao, Active Android,realm and so on, each of these frameworks has its own advantages and disadvantages, you can completely according to the actual needs o

Android official has provided a variety of fragment use of demo examples, in our SDK below the API demo contains a variety of fragment use examples, need to see the demo friend, directly to see the API demo that program on it, not everywhere to find. It separates different functions and implements different classes of Today to explain the fragment control, mainl

some reason, then when the dismiss WindowManager check that the activity that dialog belongs to does not exist, it will report Illegalargumentexception:view not attached to window manager. One important reason for this type of exception is that both the ProgressDialog creation display and cancellation allow processes in non-UI threads. In Android, non-UI threads are not allowed to manipulate UI-related things, such as adding a remove view, but are yo

Android provides a downloadprovider, which is a complete download tool. It provides good external interfaces that can be called by other applications to complete the download. It also provides download, notification, and storage mechanisms.This downloadprovider is used in Android browser and other tools. Unfortunately, this downloadprovider is not open to app developers and is only used internally. We will

picture pixel configuration is inconsistent, the system will automatically adjust the display effect, about picture pixel problem see Android development of the bitmap two sampling articles; filter indicates whether the filter effect is turned on. This property is also for the image to be magnified or reduced when there is a better display effect; The Gravity property indicates that when the size of the picture is smaller than the size of the control

Android provides a large number of UI controls, and this article describes how to use TextView, ImageView, Button, EditView, ProgressBar, SeekBar, ScrollView, WebView. Before introducing the various controls, let's briefly introduce the most basic properties of the Android UI control: Id:id is a unique identifier for a control that can be manipulated by **findvi

We know that one of the things that we often need to use when writing Java code is the dialog box (Dialog), for example, we write the program, others in use, we need to give users some hints, and these tips if always in the form of the window to play out inevitably more trouble, but also increased the burden on the programmer, But a lot of people don't know much about the pop-up and

= null; @SuppressLint ("Newapi") @Override protected void OnCreate (Bundle savedinstancestate) {super.oncreate (Savedinsta Ncestate); Setcontentview (R.layout.main); LV = (ListView) This.findviewbyid (R.id.listview); Resolver = This.getcontentresolver (); String str = "content://com.app.test.db/"; Uri uri = uri.parse (str); Resolver.insert (URI, NULL); Cursor Cursor = resolver.query (URI, NULL, NULL, NULL, NULL); Simplecursoradapter adapte

Tags: what request is download file Hub oid Way method file Download Async This article covers the following topics: What is OKHTTP3? Demo of the OKHTTP3 Tool class (package based on the Okhttp tool class) OKHTTP3 Packaging for Tool classes Use the exact words of the author's project: HTTP and HTTP/2 clients for Android and Java applicationsIts Project address: https

Hello everyone, I believe there must be a lot of listview controls for everyone. They are slide vertically and use convertview. We can load thousands of data, but sometimes we have this requirement, such as photo album, we want to slide horizontally, and there is a lot of data, this time viewpager controls will come in handy, viewpager use when we need to import a third-party package

Android multi-channel packaging: Use Gradle, Android Studio, and androidgradle Reprinted please indicate the source: Http://blog.csdn.net/jjwwmlp456/article/details/45057067 ----------------- busy repeat Gradle: this is complicated, but in Android, we know how to use it, an

In Android, you can use timers to monitor time, the functionality of this class is to start the timer, stop timing, and then set the timer mode, the following list of the Timer method prototype: long getbase () ; // time to return to base, String GetFormat () set by SetBase (long), Returns the current string format, which is a void setbase (long base) implemented via SetFormat (); /Set time, va

R.id.nav_personal_info: //do something break ; ... } return false; } }); At this point, the basic use of navigationview is almost done, the effect is the previous picture shows the effect. The following is the use of the process encountered problems and solutions. One, the menu icon color is rendered into other colors Navigationview defaults to the

Use the exact words of the project: type-Safe HTTP client in Android and JavaProject Address: Https://github.com/square/retrofitHere retrofit also needs to import its Gson dependent library, because the returned data needs to be gson to handle1. Get request2. Post request3, single, multi-file uploadDemonstrates the provided interface (this interface does not support post mode)Get request (supports normal re

First of all, Baidu installed 9 million simulator, no longer detailed. Open the 9 million Android simulator. Need to be registered users can use, if you have registered before, please login directly, not registered, you need to click Registered account to register one. Enter your registered username and password. Click to login to open 9 million

Aidl:android Interface definition Language, which is a description language of the Android internal process communication interface, through which we can define communication interfaces between processes. Icp:interprocess communication, internal process communication. Use: 1, first create a aidl file, aidl file definition and Java code similar, but! It can refer to interfaces and classes defined in othe