android app development books

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

. All you need to do is import this jar library into your project.During the import Classes.jar process, there are two issues that may occur (I use the Eclipse development environment, so I will only explain the issues that this environment encounters). Problem one is to import this jar Library by importing a different jar , and find that the compilation is slow, and sometimes not even compiled successfully, eclipse crash or prompt for "java.l

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

increase in visual pleasure, improve the comfort of use, while improving software identification, focus on the relationship with the PC side, but also need to increase the use of surprise, attention to the details of the software expression, enhance the user's sense of privacy and customization. In the interface design style definition, from the visual effects mainly for users to convey information to retain the overall tone of the product, the target population. such as the same instant messa

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

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

Output a record in the Bag-proficient in android, IOS App application service development, and bagandroid Closed json format content {“item”: { Organize a complete json format text output to the App together with the running result of the inner tag Initialize records in the Bag (you can also query records from the

We have a headache in the absence of app development: a button to change the color of the past, or it is very difficult to see, eventually only temporarily abandoned, wasting a lot of development time and energy.Development specification Chapter see Android Development How t

Intermediates " Path, the compiled jar Library classes.jar . All you need to do is to import this During the import Classes.jar process, there are two issues that may occur (I use the Eclipse development environment, so I will only explain the issues that this environment encounters).The first problem is to import this jar Library by importing other jars , discovering that the compilation is slow and sometimes not even successful,Eclipse cras

)); Tabhost.setcurrenttab (0);}}below to build our frame, the new Imageframe.java, Textframe.java, Bothframe.java inside the content basically similar, the following gives an example:Imageframe.javaPackage Com.jov.germany.frame;import Android.annotation.suppresslint;import Android.app.fragment;import Android.os.bundle;import Android.view.layoutinflater;import Android.view.view;import Android.view.ViewGroup; Import COM.JOV.GERMANY.R; @SuppressLint ("Newapi") public class ImageFrame extends fragme

( "Bothtab"). Setindicator ("Close Set"). SetContent (R.id.both_tab)); Tabhost.setcurrenttab (0);}}To come down to build our frame, the new Imageframe.java, Textframe.java, Bothframe.java inside the content almost identical, the following to a sample:Imageframe.javaPackage Com.jov.germany.frame;import Android.annotation.suppresslint;import Android.app.fragment;import Android.os.bundle;import Android.view.layoutinflater;import Android.view.view;import Android.view.ViewGroup; Import COM.JOV.GERMA

Step-by-Step android development: Create an APP desktop shortcutZookeeper I have referenced more than N documents on the Internet, and finally found that it is more reliable to write, so I will not repeat the creation of shortcuts. // Create a shortcut Private void addShortcut (){ Intent shortcut = new Intent ("com. android