best android app development tutorial

Environment: already has the root permission of Android system, our apk is boot startTest: Copy the 2 identical versions below the system System/app directoryThe ADB root #获取root权限, provided that the root permission has been opened, namely: Debug compiled Android system adb remount # will write the system directory to ADB push c:/test_1_v1.apk/system/ The

activity, The name we pass in here is used to set the MainPage in the springboard activity.Intent page1 = new Intent();page1.SetClass(this, typeof(ShortcutContainerActivity));page1.SetAction(Intent.ActionMain);page1.PutExtra("PageName", "Page1"); Shortcutinfo is instantiated below. Setrank to set the ordered ordinal, up to 5 Shortcut, which is 0-4; SetIcon is the set icon; Setshortlabel and Setlonglabel are set long name and segment name; Setintent instantiate the previous step Inte NT incomi

. OnCreate (savedinstancestate); TextView TextView=NewTextView ( This); Textview.settext ("Helloworld!"); Setcontentview (TextView); }}Open Androidmanifest.xml, modify its contents to the following codeManifestxmlns:android= "Http://schemas.android.com/apk/res/android" Package= "Com.example.lushengduan.helloworld"> ApplicationAndroid:allowbackup= "true"Android:icon= "@mipmap/ic_launcher"Android:label= "@string/app_name"Android:supportsrtl= "true

A series of courses on ipad, Iphone and ipod mobile app development based on the IOS5 platformSuitable for people: BeginnerNumber of lessons: 120 hoursUsing the technology: iphone, ipadProjects involved: calculators, questionnaire systemsConsulting qq:1840215592Course IntroductionThis series of courses are divided into basic articles, project actual combat: 100-120 hours (expected), 45-60 minutes/hours. The

start node of city, the city object is created and the object is created to make it easier to save the text that will be parsedWhen parsing to the name start node, gets the text content of the next node, same as temp, PM CaseXmlpullparser.start_tag://gets the name of the current node 　　 if("Weather". Equals (Xp.getname ())) {Citys=NewArraylist(); }Else if("City". Equals (Xp.getname ())) { City=NewCity (); }Else if("Name". Equals (Xp.getname ())) {//gets the text of the next node of the current

IntroductionNetwork has been my personal blind spot, a while ago to take time to learn a bit volley network tools to use, but also through the source of further learning, have some experience to share. In Android development, a lot of mature network tools, Android comes with HttpClient, as well as okhttp, as well as the Koush great God created ion open source pro

after Android 4.4. This shows a simple JS method with return value.function getgreetings () { return 1;}Java code is called with the Evaluatejavascript methodvoid Testevaluatejavascript (WebView WebView) { webview.evaluatejavascript (new valuecallback() { @Override void onreceivevalue (String value) { " Onreceivevalue value= "+ value);}} );Precautions: The result is defined as string, and for a simple type it is attempted to c

memory allocation/Recycle by yourself, so be careful. In Android development, how can we effectively detect memory usage and Memory leakage? Three methods are introduced here: 1. Program Log information During garbage collection, the program prints a Log information logcat window. For example: D/dalvikvm( 9050): GC_CONCURRENT freed 2049K, 65% free 3571K/9991K, external 4703K/5261K, paused 2ms+2ms Not

function for app optimization, one click can be in iOS and AndroidApp optimization in mobile phone;4. Cloud compilation, the Apicloud official online app icon, launch page and certificate, one-click "Cloud Compilation" can beNative installation package for iOS and Android;5. Cloud repair, use the cloud repair fast iteration, at any time release new version, new

method, this method can not be less, less will crash. PackageCom.vitoyan.myangtzeu.view;ImportAndroid.content.Context;ImportAndroid.support.v4.view.ViewPager;ImportAndroid.util.AttributeSet;Importandroid.view.MotionEvent;/*** Vito-yan * Function: Custom non-sliding Viewpager*/ Public classNoscrollviewpagerextendsViewpager {/*** This method is usually used when instantiating in code *@paramContext*/ PublicNoscrollviewpager (Context context) {Super(context); } /*** When using this class in

); for(PackageInfo p:list) {Bean=NewAppbean (); Bean.setappicon (P.applicationinfo.loadicon (Packagemanager)); Bean.setappname (Packagemanager.getapplicationlabel (p.applicationinfo). toString ()); Bean.setapppackagename (P.applicationinfo.packagename); Bean.setapkpath (P.applicationinfo.sourcedir); File File=NewFile (P.applicationinfo.sourcedir); Bean.setappsize ((int) file.length ()); intflags=P.applicationinfo.flags; //determine if the APK is part

available to the user as standalone plugins, which are no longer detailed here. The following is an overview of the work that needs to be done from a development perspective.Ø framework features that need to be developed in the main application:Identify if the specific plugin is already installed (based on the plugin's package name)If you have installed to determine if you need to upgrade (server-side to get the latest version and local comparison)Do

Improved to proficient in Mobile (android, IOS) App service program development, androidios 6.2 development Improvement Please refer toDevelopment ManualBasic label language and Expression in 6.3 proficient in mobile App application service program

":"book"," Price":51.24,"Unit":"Ben"}]},"Tatol":4}Full code{"Items": {cHTML>bag id=item suffix=0> we name=name>PotatoesWe> we name=price >1.24We> we name=Unit>KGWe>bag>bag id=item suffix=1> we name=name>ShirtWe> we name=price >68We> we name=Unit>ThingWe>bag>bag id=item suffix=2> we name=name>CokeWe> we name=price >2.20We> we name=Unit>BottleWe>bag>bag id=item suffix=3> we name=name>BookWe> we name=price >51.24We> we name=Unit>ThisWe>bag>cHTML>cHTML> for bags=I

toilet module. avi│├6-2 Toilet Module Error Tip horizontal vertical center. avi│├6-3 Bathroom Map module development. avi│├6-4 Map scale Position move •. Avi│├6-5 locate successful and failed listener events. avi│├6-6 Show the bathroom and navigate (on). avi│├6-7 Show toilets and navigate (bottom). avi│└6-8 near the bathroom simulator demo. avi├│└7-1 tool class encapsulation. avi├│├3-1 backstage System Developmen