android intentservice tutorial

, enter the time to judge whether there is no value, if no value is the first time to enter, then jump into the Application Guide page, otherwise, jump into the main page.2.ViewPager to achieve page turn effect:Package Com.yayun.guide;import Java.util.arraylist;import Java.util.list;import android.app.activity;import Android.content.intent;import Android.os.bundle;import Android.support.v4.view.pageradapter;import Android.support.v4.view.viewpager;import Android.support.v4.view.viewpager.onpagec

); three parameters of this function, the first parameter sets the position of the toast with the Gravity constant, the second is the x-axis offset, the positive value is the right, the third is the y-axis offset, and the positive value is down.Set up a toast for a complex layoutInstance code:Findviewbyid (R. ID. Button1). Setonclicklistener(New Onclicklistener () {@Override public void OnClick (View v) {//TODO Auto-generat Ed method stub Toast Imagetoast = Toast. Maketext(mainactivity. this,"Sh

timer; Context context;//Onupdate@overridepublic void onUpdate (context con, Appwidgetmanager appwidgetmanager,int[] Appwidgetids) {context = Con;timer = new timer (); Timer.schedule (timertask, 0, 1000);//1 seconds call}//MyService Service Program Public Static class MyService extends Service {@Overridepublic void OnStart (Intent Intent, int startid) {remoteviews remoteviews = New Remoteviews (Getpackagename (), r.layout.my_time);//Set Display control Remoteviews.settextviewtext (r.id.textview

Today is the fifth lesson, mainly about Android Tablelayout and Framelayout.did not explain absolutelayout. We should eliminate the use of this layout.Play Address:Lesson Five Click to openAbout Whistling Android Videos:The most important feature of this video is practical, which should be said, which should not be said, I have done careful consideration. There is no imaginary head eight brain, pedantic, al

to be a bridge between runnable and activity interactions, so we just send a message in the Run method, and in handler, we perform different tasks with different messages. PackageCom.android.tutor; ImportJava.util.Timer; ImportJava.util.TimerTask; Importandroid.app.Activity; ImportAndroid.os.Bundle; ImportAndroid.os.Handler; ImportAndroid.os.Message; Public classHandlerdemoextendsActivity {//The title provides a variable for the Settitle method, which I set as the int type for convenience.

need to get the width of the control of the method?Method One: More than the other two methods more than one calculation, that is, multiple calls to the Onmeasure () method, although the method looks simple, but if the target control calculation time is relatively large (such as ListView, etc.), is not recommended to use.Method Two, its callback method will be called many times, and sliding textview when the time is called, so it is not recommended.Method three, more appropriate.Of course, the

final String create_tbl = "CREATE table logtable" + "(_id integer primary key autoincrement,name Text,url t Ext,desc text) ";//sqlitedatabase??? Private Sqlitedatabase Db;public DBHelper (context context) {Super (context, db_name, NULL, 2);} @Overridepublic void OnCreate (Sqlitedatabase db) {db.execsql (CREATE_TBL);} //?????? public void Open () {db = Getwritabledatabase ();} @Overridepublic void Onupgrade (sqlitedatabase db, int oldversion, int newversion) {//TODO auto-generated method stub}//

Basic Android tutorial -- attribute animation of Android animation collection-see1. Evaluator custom1) Evaluator Introduction The ValueAnimator in the previous section is simple and practical. The first step of using an animation is as follows:Call ValueAnimatorOfInt(),OfFloat() OrOfObject() Create a ValueAnimator instance using static methods!In this example,

= "font-size:medium;" >) where xxx activity string getstringextra if boolean getbooleanextra And so on, you can find it yourself. ( 2 some can have default values, such as Getintextra There are two parameters, the first is the key name, and the second is the default value, which means that if the key value does not exist, the default value is used. classAndroidAmong the threads1 , in UI cannot be modified outside the thread UI the. So who creates the view who can go and modify it.

There are many ways of parsing in Android. There are XML parsing and JSON parsing in the general direction. And, detailed points, XML and JSON parsing each have their own many analytic way. Today this article mainly introduces pull parsing in XML parsing. As for the parsing of XML, I have written in javaweb some knowledge of Dom and dom4j and so on parsing way. Interested readers can go to Javaweb to find the relevant content.Customize a data source f

Linked alarm system based on ARM Cortex-a8 and Android 4.x (Android, A8, Linux, Drive, NDK)Course Category: AndroidSuitable for people: advancedNumber of lessons: 38 (70 sessions)Using technology: Android, A8, 210, Linux, drivers, NDK, alarmsRelated projects: Linkage alarm systemConsulting qq:18402155921. Curriculum development EnvironmentThis course covers Java

Hello everyone, our tutorial is onAndroidCustom in the tutorialViewFor beginners, they are usedAndroidThe traditional page layout method is as follows: Of course, the layout method above can help us develop simple applications, but if you want to write a complex application, it will be a little far-fetched. If you don't believe it, you can study the source code, the layout of high handwriting is usually written as follows: A extends linerlayout a

Android Tutorial Android, an open source operating system for mobiles devices (smartphone and tablet), led by Google. the Android SDK provides a set of tools and APIs to develop Android application, using Java. so, if you know Java, Andr