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Android sample connect to the mysql server database and get the values of field of table , and display them.
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| <uses-permission android:name="android.permission.INTERNET"/> | |
| <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" /> |
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| <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" | |
| xmlns:tools="http://schemas.android.com/tools" | |
| android:layout_width="match_parent" | |
| android:layout_height="match_parent" | |
| tools:context=".MainActivity" > | |
| <TextView | |
| android:id="@+id/textView0" | |
| android:layout_width="wrap_content" | |
| android:layout_height="wrap_content" | |
| android:layout_centerHorizontal="true" | |
| android:layout_centerVertical="true" | |
| android:text="@string/hello_world" /> | |
| </RelativeLayout> |
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| package com.example.andmysql; | |
| import java.sql.Connection; | |
| import java.sql.DriverManager; | |
| import java.sql.PreparedStatement; | |
| import java.sql.ResultSet; | |
| import java.sql.SQLException; | |
| import android.os.Bundle; | |
| import android.os.Handler; | |
| import android.os.Message; | |
| import android.app.Activity; | |
| import android.widget.TextView; | |
| public class MainActivity extends Activity implements Runnable{ | |
| private String hiduke=""; | |
| private int price=0; | |
| private String errmsg=""; | |
| public void run() { | |
| System.out.println("Select Records Example by using the Prepared Statement!"); | |
| Connection con = null; | |
| int count = 0; | |
| try{ | |
| Class.forName("com.mysql.jdbc.Driver"); | |
| con = DriverManager.getConnection | |
| ("jdbc:mysql://10.0.2.2:3306/stock","root","root"); | |
| try{ | |
| String sql; | |
| // sql | |
| // = "SELECT title,year_made FROM movies WHERE year_made >= ? AND year_made <= ?"; | |
| sql | |
| = "SELECT hiduke,jikan,code,price FROM table_stock"; | |
| PreparedStatement prest = con.prepareStatement(sql); | |
| //prest.setInt(1,1980); | |
| //prest.setInt(2,2004); | |
| ResultSet rs = prest.executeQuery(); | |
| while (rs.next()){ | |
| hiduke = rs.getString(1); | |
| price = rs.getInt(4); | |
| count++; | |
| System.out.println(hiduke + "\t" + "- " + price); | |
| } | |
| System.out.println("Number of records: " + count); | |
| prest.close(); | |
| con.close(); | |
| } | |
| catch (SQLException s){ | |
| System.out.println("SQL statement is not executed!"); | |
| errmsg=errmsg+s.getMessage(); | |
| } | |
| } | |
| catch (Exception e){ | |
| e.printStackTrace(); | |
| errmsg=errmsg+e.getMessage(); | |
| } | |
| handler.sendEmptyMessage(0); | |
| } | |
| private Handler handler = new Handler() { | |
| public void handleMessage(Message msg) { | |
| TextView textView = (TextView) findViewById(R.id.textView0); | |
| textView.setText("hiduke="+hiduke+" price="+price+" "+errmsg); | |
| } | |
| }; | |
| @Override | |
| protected void onCreate(Bundle savedInstanceState) { | |
| super.onCreate(savedInstanceState); | |
| setContentView(R.layout.activity_main); | |
| Thread thread = new Thread(this); | |
| thread.start(); | |
| } | |
| } |
Thanks bro it helped me I wasted alot of time for this earlier.
Thanks for the code u save my day :)
I cant connect database with my own connection code
Is this code for a connection to Google's Sql Cloud?
From where to get this "10.0.2.2:3306"?
This looks like a bad idea.
Think about it you are exposing a MySQL/MariaDB username/password in a java application which can be decompiled if people know how to get the APK from thier phone on their computers.
Best way to do this is with a web based API and protocols like REST, SOAP or XML-RPC which does the MySQL/MariaDB connection.
Hallo. I also would like to know know where you get this ip "10.0.2.2"?
REST, SOAP or XML-RPC
Do you know any good (and simple) example to perform the same task using REST or SOAP?
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Hi , am having an exception "Can not connect to database" can u help me?