gui based android app development

through the StartService method Background process: a process that has an invisible activity (the OnStop method is called) Empty process: No process with any active app components Status of Phone recorder phoneCall to detect the status of the phone, using the broadcast mechanism. Idle state (phone hangs up) TelephonyManager.CALL_STATE_IDLE Ringing status TelephonyManager.CALL_STATE_RINGING Off-hook status (in call) Te

server is the use of JSON communication, but on second thought, there are two drawbacks to doing this, 1: There are many players in the list is repeated, this will produce a lot of repeated loading, wasting bandwidth, increase the waiting time; 2: No way to cache, or to do cdn! Later think that still pass the URL good, this way, the client can load the data asynchronously, but then thought, if the user first opened, then can be saved to the local, waiting for the second time to load the local d

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In the process of developing an application, it is necessary to carry out the corresponding unit test.Next we write a simple Android application to complete the basic unit testFirst, we need to build an Android project, named JUnit.Then, create a service class, which is the class Personservice.java that needs to be tested:Package Cn.itcast.service;public class Personservice {public void Save (string usernam

controlPowerManager pm = (powermanager) mactivity.getsystemservice (Context.power_service); WakeLock Mwakelock = Pm.newwakelock (Powermanager.full_wake_lock,tag); Mwakelock.acquire ();//Do what you want to do.。。 Mwakelock.release ();Newwakelock has three different options for the first number of references:Powermanager.partial_wake_lockPowermanager.screen_dim_wake_lockPowermanager.screen_bright_wake_lock10, Android:windowsoftinputmode1, when the focus is generated, the soft keyboard is hidden o

relative to the middle of the screen, not the absolute position of the screen. Run:3 Insert Picture degrees in the content text and buttons of the dialog box: I have described inserting images in TextView in the TextView advanced app for Android development , and this technique works equally well in dialog boxes. The code for inserting a picture in the dia

First onIn fact, when just bought HTC G8 (at that time the price of Beijing is still 6,100 flat), Android 2.1, 2.3 has been the development of Android interest, but later did not get it ...Today, I suddenly remembered that there was not even a game on my cell phone and I was going to develop one.On the internet to find some, see understand the principle of the la

-docs/new-build-system/applicationid-vs-packagename )) Test Package name for app Instrumentation Test Runner Example: Android { compilesdkversion buildtoolsversion "19.0.0" defaultconfig { Versioncode Versionname "2.0" minsdkversion targetsdkversion} The Defaultconfig element in the Android element is w

Getsharevalue () {Similarly, an Sharedpreferences object is instantiated before reading sharedpreferences dataGets the local XML file name---TestSharedpreferences sharedpreferences = getsharedpreferences ("Test", activity.mode_private);Use the GetString method to get value, note that the 2nd parameter is the default value of valueString name = sharedpreferences.getstring ("name", "This value bit default value when name does not exist");String habit = sharedpreferences.getstring ("password", "De

"android:text= "Hello world,my name is Liurui."/>Android:layout_width= "Wrap_content"android:layout_height= "Wrap_content"Android:text= "Button1 "android:onclick= "Onmybuttonclick"Android:id= "@+id/button" android:layout_gravity= "Center_horizontal"/>Android:layout_width= "Wrap_content"android:layout_height= "Wrap_content"Android:text= "Button2 "android:onclick= "Onmybutton2click"Android:id= "@+id/button2" android:layout_gravity= "Center_horizontal"/>5. Values-->strings.xml6, Gen-->r.java/*___ge

== /dissolve/70/gravity/center ">Because I was just beginning to learn, with such a method when did not think of the way to bind the listener, hoping to pass the great God pointing twos.Method Two:Android:id= "@+id/button1"Android:layout_width= "Wrap_content"android:layout_height= "Wrap_content"Android:textcolor= "#FF0000"Android:textsize= "20SP"android:text= "Call the girl #10; (China Unicom) "/>The way to do this is with " #10;" This symbol implements a button that displays two lines of text

Service-based music player for Android Development This is a Service-based music player. The program's music will be played by the background Service component. When the background playing status changes, the program sends a broadcast notification to the foreground Activity update interface. When you click the foregrou

function: Time t = new time ();T. settonow ();Int lastmonth = T. Month + 1;Final string STR = T. Year + "year" + lastmonth + "month" + T. monthday + "day ";Final string nowtime = my_ RMB _data.getstring (todaytime, ""). tostring ();If (nowtime. Equals (STR) = true){TV _time.settext ("Date:" + nowtime + "checked in! ");Bt_qiandao.setbackgroundresource (R. drawable. yqd );}Else{TV _time.settext ("Date:" + Str );Bt_qiandao.setbackgroundresource (R. drawable. QD );} All code of the page: Import

have VMware installed, you can save the previous step, and then on the VirtualBox host-only network, right-click-Properties-Find ipv4--double-clickChange the top to automatically get it!(18) In addition, there is a frequently encountered problem:error message state that genymotion can ' t load OpenGL libraries?Probably contains opengl, meaning that your video card will not support the OpenGL2.0, if you encounter such a problem, only need to update the latest graphics driver on it! (Recommended

This article is a summary of my personal development of the Camera APP. It mainly introduces the basic usage and precautions of FaceDetection. If you have any mistakes or deficiencies in this article, you are welcome to criticize and correct them.1. FaceDetection1. Version supportFaceDetection is Android (Android Vers

Intent email =NewIntent (Android.content.Intent.ACTION_SEND); Email.settype ("Plain/text"); String[] Emailreciver=NewString[] {"[Email protected]" }; String EmailSubject= "Brewclock Feedback"; String Emailbody= "";//Set mail default addressEmail.putextra (Android.content.Intent.EXTRA_EMAIL, emailreciver);//Set message default titleEmail.putextra (Android.content.Intent.EXTRA_SUBJECT, emailSubject);//set what you want to send by defaultEmail.putextra (Android.content.Intent.EXTRA_TEXT, emailbody)

Recently, I have been engaged in mobile projects. To manage mobile project development in the future, I have to learn something about it, and I have to reverse my work on Android. Because the technology selection uses the phonegap + native plug-in, I learned how to use phonegap. I always feel that phonegap will depend too much on it in the future. After all, phonegap is a new project, and many of the effe

React native, which claims to be able to develop native apps for iOS and Android across platforms, is sure to become a trend. Just plan to develop a mobile app, and there is no corresponding development resources, decided to try their own groping.The first step is to build the development environment, the following is

1. THML5 has been able to implement the basic framework of most Android applications. For example, read 2. is the integration of basic applications of custom systems a good indication of the coming autumn of Android development? 1. THML5 has been able to implement the basic framework of most Android applications. For e