android developer nanodegree

For enterprises, a qualified Android developer may be Familiar with the android framework, read the android source code Familiar with andorid sdks, especially networks and threads StrongCodeControl A little understanding of ndk or C (better if proficient) Use git to manage code The requirements of develo

async) {mlooper = Looper; mqueue = looper.mqueue; mcallback = callback; masynchronous = async; }MessageSingle necklace table structure.Role: The carrier of the data 1. How is the message reused?From the global message pool (linked list structure)Obtain() { new Message ();} 2. Why can I send a message?Android wants to pass an object either implemented serializable or parcelable, where the Parcelable interface is implemented.Slightly3,

Android Developer App WidgetThis blog is mainly about the development of desktop programs in Android development--app widgets, mainly used by Pendingintent and remoteviews. pendingintent is primarily used to set up the appropriate way for desktop programs. This object can have three intent ways, the first one is to start a new activity, the second is to send a b

Sharing a file (shared files)This series of articles in my study of Google Developer documentation combined with Google translation and their own understanding of the writing, I hope to learn Android development friends bring some convenience, due to the limited level of personal translation, so the content contains the original text and translation, I hope that the browser combined understanding, so as not

error, there is no warning. However, regardless of the error or not, this is not safe, there is an ID conflict in the control of the hidden danger.　　There are no errors or warnings under Eclipse.Androidstudio the error.Rearrange the problem description: in Androidstudio, when adding a control dynamically with code, assigning an ID to a control by View.setid (int id) directly assigns a parameter of type int "error", and the correct use posture of View.setid () is described below.• Scenario One:

contentMenu.setheadertitle ("file operation");Menu.setheadericon (R.drawable.ic_launcher);Menu.add (1,1,1, "copy");Menu.add (1,2,1, "paste");Menu.add (1,3,1, "cut");Menu.add (1,4,1, "renaming");}@Overridepublic boolean oncontextitemselected (MenuItem item) {Switch (Item.getitemid ()) {Case 1:Toast.maketext (Mainactivity.this, "click Copy", Toast.length_short). Show ();BreakCase 2:Toast.maketext (Mainactivity.this, "Click to paste", Toast.length_short). Show ();BreakCase 3:Toast.maketext (Mainac

Specific steps can be viewed on the Android website.Http://source.android.com/source/initializing.htmlInstall Dpkg-dev Firstsudo apt-get Install Dpkg-devsudo apt-get install Git-core GnuPG Flex Bison gperf build-essential Zip curl zlib1g-dev gcc-multil IB G++-multilib libc6-dev-i386 lib32ncurses5-dev x11proto-core-dev libx11-dev lib32z-Dev CCache libgl1-mesa-dev libxml2-utils xsltproc Unzipsudo apt-get install openjdk-7-jdksudo update-alternativ

============ Problem Description ============The first two months can also visit the Android developer site, now can not access, what is the method, in the future to think of the official latest Mac version of ADT is difficult.============ Solution 1============FQ AH ah ah ah ah.============ Solution 2============FQ Software, we all know!============ Solution 3============Now is not, can only FQ.===========

Sometimes the APK file installed directly under the Bin folder will have an error "a packet with the same name with a signature violation installed."The reason is that this apk is signed by the debug user by default. As long as we set our own signature is OK, the specific method is as follows.1. Tools for signing. Keytool.exe under the JDK installation pathThis is my D:\java\jdk1.7.0_09\binkeytool.exe.Drag directly to the console (you don't need to set the environment variable), space, and then

When launching an app using the Android automated Test tool Monkeyrunner, you need to fill in the package name and activity of the program under test, there are two ways to view the app package name and the entry activity name:method One: Using AAPT//aapt is a tool that comes with the SDK, in the Sdk\builds-tools\ directory1. Take the ES file browser as an example, switch to the Aapt.exe directory in the command line execution: AAPT dump badging E:\ap

The theme of the first phase of the android bus salon is: exploring opportunities for grassroots developers in the mobile Internet era. We invited Dong boying, founder of the alert clock, Wang Jun, CEO of testin, and Xu Yu, China Technical Director of Appcelerator, zhang Jian, founder of anyview. Our salon was intended to share with more mobile Internet entrepreneurs more success stories or experiences on the road to entrepreneurship. In fact, we did

The android developer of svn1.6 is also noted. A few days ago, I updated my development environment, downloaded the new version of Eclipse, updated SDK to 4.2, and updated ADT to 21. After loading the old eclipse_workspace with the new version of Eclipse, it is found that the project checkout from the SVN version library cannot be compiled, and the following error is reported: Errors occurred during the

Public Static classFragmentaextendsListfragment {Private Onarticleselectedlistener Mlistener; ... //Container Activity must implement this interface Public InterfaceOnarticleselectedlistener { Public voidonarticleselected (Uri Articleuri); } ... @Override Public voidOnattach (activity activity) {Super. Onattach (activity); Try{Mlistener=(Onarticleselectedlistener) activity; } Catch(classcastexception e) {Throw NewClassCastException (activity.tostring () + "must implement Onarticleselecte

further explain why, the admission company should be accommodating.18. Have you ever thought of starting a business?Answer tip: This question can show you the momentum, but if your answer is "yes", be careful, the next question may be: So why don't you do it?19, how to look at education and ability?Answer tip: Education I think as long as the college diploma, it shows that I have a fundamental learning ability. The rest, whether you are a bachelor or a doctor, for this discussion is not about h

July 5, 2014, 6th, AVOs Cloud Joint Move point Technology, seven Qiniu storage, Ucloud, push Network, Segmentfault, EOE Developer community, offer, csdn and Geek College come to Mordor, A two-day hacking marathon was held for developers. This event is an exclusive collaborative media with Dynamic point technology, which features a special report on developers ' ideas and products. Love encryption as the guardian of mobile application security, was inv

1: Open Adt-bundle-windows-x86\eclipse folder, create new Folder Subclipse (Note: adt-bundle-windows-x86 for my Eclipse directory name)2: Open Eclipse's svn plugin zip file (site-1.8.4.zip)3: Extract the features and plugins folders from the Open Site-1.8.4.zip package to the Adt-bundle-windows-x86\eclipse\subclipse folder4: Open the Adt-bundle-windows-x86\eclipse\dropins folder and create a new text file Svn.lnk The contents of this file are: Path=subclipse5: Open the Adt-bundle-windows-x86\ecl

this component into their mobile apps, allowing users to easily share the content of their apps in the most popular social media platforms.Mobile Development Payment Platform Class solutions:for developers to provide payment platform API interface, to achieve the functions such as remittance transfer. Mobile Development Voice class solutions: for mobile developers to provide convenient speech recognition services, so that there is text input in place with voice input instead. Save time and effo

Android animation icon -- I am not a gif maker, I am a developer, androiddeveloper We first found a cool animated icon on git: Https://github.com/xuyisheng/tickplusdrawable I have to say that foreign programmers are indeed much better than us in terms of details. OK. Today we will imitate this: Now let's take a look at our results. Don't spray me, just write it for an hour. A lot of details have not been f

Uri uri = Data.getdata (); String[] proj = {MediaStore.Images.Media.DATA}; Cursor actualimagecursor = Managedquery (uri,proj,null,null,null); int actual_image_column_index = Actualimagecursor.getcolumnindexorthrow (MediaStore.Images.Media.DATA); Actualimagecursor.movetofirst (); String Img_path = actualimagecursor.getstring (Actual_image_column_index); File File = new file (Img_path);The following is the solution after 4.2.2, after the Managedquery method is discarded:Public StringGetrealpathfro

sqlitedatabase = dbopenhelper.getreadabledatabase (); switch (Matcher.match (URI)) {case Persons:return Sqlitedatabase.query ("person", projection, Selection,selectionargs, null, NULL, sortOrder); case Person:long rowID = Contenturis.parseid (URI); String where = "PersonID =" + rowid;if (selection! = NULL ! "). Equals (Selection.trim ())) {where + = selection;} return sqlitedatabase.query ("person", projection, Where,selectionargs, null, NULL, SortOrder);d Efault:throw New IllegalArgumentExcept