simple sqlite database example in android

Android Development Series (9): Create a database and complete simple CRUD operations This blog post mainly implements simple database creation and CRUD operations. First, create an Android Project named db 1. Complete

This article illustrates the simple learning example of Android programming view. Share to everyone for your reference, specific as follows: View, which is a superclass of Android, contains almost all of the screen types. Each view has a canvas for drawing, and the canvas can be arbitrarily extended. The view is cust

of the Sysuser model), and then generate SysUserController.cs under the Controllers folder. The function of Sysusercontroller is to receive the action (action) of the view layer, and then to the corresponding model layer of the data interaction, and then return the results to view. Similarly, under the Views folder also generated the Sysuser folder, which corresponds to the five view page of the cshtml file. Right-index.cshtml--in the browser, display the following page: Four, the use of ViewMo

Dler_buffer_start:showloading (); Break Case Handler_buffer_end:hideloading (); Break Case Handler_surface_size:changesurfacesize (); Break } } }; private void Showloading () {mloadingview.setvisibility (view.visible);} private void Hideloading () { Mloadingview.setvisibility (View.gone); } private void Changesurfacesize () {//Get screen size int DW= Getwindowmanager (). Getdefaultdisplay (). GetWidth (); int dh = Getwindowmanager (). Getdefaultdisplay (). GetHeight (); Calculate aspect ratio d

A simple Android + Servlet Image Upload example: Android servlet The example is relatively simple. The server is a Java Web Servlet. In the doPost method, the image is received and saved, and the saved image name is returned to th

This example describes the usage of resource files in Android. Share to everyone for your reference, specific as follows: Use of resource files between XML files Reference format: Attribute= "@[packagename:]resourcetype/resourceidentifier" Example There are Strings.xml, Color.xml, dimen.xml files, using the parameters in them Ii. r

Tags: web base Web Access databaseThe third experiment of South Mail web technology seems to have little difference from the last time, but this time we want to access the database. A database connected with PHP. The code is as follows: (Divided into main.html, process.php, order_query.html, process_query.php) mian.html (Basic) Simple

page, exampleform.jsp: The above two pages are placed in the root of the page, please remember to copy turnpage.jsp as well. We then configure our action in the Struts-config.xml: "-//apache Software foundation//dtd Struts Configuration 1.1//en" "Http://jakarta.apache.org/struts/dtds/struts-config_1_1.dtd" > Type= "Org.apache.struts.validator.DynaValidatorForm" > key= "Exception.unawareerror" Path= "/error.jsp" Scope= "Request" Type= "Java.lang.Exception"/> Type= "Net.edainfo.example.ExampleAct

MVC5 + EF6 simple example --- take the two tables of the original SQLServer database for joint query as an example, mvc5ef6 Tools: VS. net2013, EF6, MVC5, and SQLServer2008 Reference: Http://www.cnblogs.com/slark/p/mvc-5-get-started-create-project.html Http://www.cnblogs.com/miro/p/4288184.html Http://www.cnblogs.

The following describes the development steps:First, create a jdbc/edainfo data source under Tomcat5.X. The databases can be oracle, SQL server, and mysql. The table structure is as follows:Create table example (Id varchar (13) not null,Name varchar (50) NULL,Address varchar (50) NULL) ON [PRIMARY]The id is the primary key.The content of datasource. xml is as follows:Init-config.xml has been introduced before, here is not detailed introduction.Place b

Custom ListView is required. Let's make floatdellistview here. Replication Ontouchevent method. As follows: @Override public boolean ontouchevent (motionevent ev) {switch (ev.getaction ()) {case Motionevent.action_d own: Floatdelbuttonlayou.java: public class Floatdelbuttonlayout extends LinearLayout { Above this Android ListView implementation of the iphone to implement the left-slip Delete button is a

= (RadioButton) Findviewbyid (R.id.usa_button); Find Radiogroup RG = (radiogroup) Findviewbyid (r.id.rbtngroup) by ID; Just listen to the Radiogroup rg.setoncheckedchangelisteNER (new Oncheckedchangelistener () {@Override public void oncheckedchanged (radiogroup group, int checkedid) { TODO auto-generated Method Stub if (R.id.china_button = = Checkedid) {mytextview.settext ("your Chosen country Home is: "+ chinabtn.gettext (). toString ()); else if (R.id.uk_button = = Checke

This article introduced the simple Weather app mainly uses rxandroid, the MVP, the retrofit realization, first looks at the effect:Home Page Content: Right column weather list: Left column City list First look at the activity main code (using MVP mode): Call the presenter method to get the data Mmainpresenter = new Mainpresenterimpl (this); Mmainpresenter.getplacedata (); Mmainpresenter.getweatherdata ("Chengdu"); Displays the home

In this example, a simple Integer Calculator applies multi-touch operations: One Touch operation is addition operations, two touch operations are subtraction operations, three touch operations are multiplication operations, and four touch operations are Division operations. The option menu is also added. The options include exit, help, and clear.: Specific Code:MainActivity. java1. package com. lingdududu.

This article describes the Android programming approach to developing audio recordings and playback recordings. Share to everyone for your reference, specific as follows: * * The application needs to have the permission to write to external storage * If the output file is written to the E Xternal storage, and also the * permission to record audio. These permissions must is set in the * application ' s Androidmanifest.xml file, with something lik

Analysis, selecting Methods in "Use Project Settings" cannot be resolved (method cannot be resolved) deselect, apply--OK , and then refresh, clean, refresh, and build the project. Jni/hellocpp/main.cpp:16:18:error:base operand of ' a ' has non-pointer type ' jnienv {aka _jnienv} ' The error is:(*env)->newstringutf (env, "Hello from JNI!");This line, this is the C notation, and my is the CPP program, need to be rewritten as:Env->newstringutf ("Hello from JNI!"); Java.lang.

1. Create a data help class that inherits SQLiteOpenHelper. The MyDBOpenHelper code is as follows: packagecn. sg. mydb; importandroid. content. Context; importandroid. database. sqlite. SQLiteDatabase; importandroid. database. sqlite. SQLiteDatabase. CursorFactory; im 1. Create a data help class that inherits SQLiteOpe

manage the newly created thread and execute the HTTP request in the new thread; - * @return A * @throws SQLException + * @throws classnotfoundexception the */ - PublicString ExecuteSQLQuery () throws SQLException, ClassNotFoundException { $Stringstring=""; the //load the driver; (The virtual machine loads the class, not the one that is used during programming.) ) theClass.forName ("Com.mysql.jdbc.Driver"); the //establish database