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POShow some values from database android?
 

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  1. POShow some values from database android?
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    <p>I have 4 class. 1:databasehandler</p> <pre><code>package as.d.d; import java.util.ArrayList; import java.util.List; import android.content.ContentValues; import android.content.Context; import android.database.Cursor; import android.database.sqlite.SQLiteDatabase; import android.database.sqlite.SQLiteDatabase.CursorFactory; import android.database.sqlite.SQLiteOpenHelper; public class DatabaseHandler extends SQLiteOpenHelper{ private static final int DATABASE_VERSION = 1; private static final String DATABASE_NAME = "contactsManager"; private static final String TABLE_CONTACTS = "contacts"; private static final String KEY_ID = "id"; private static final String KEY_NAME = "name"; private static final String KEY_PH_NO = "phone_number"; public DatabaseHandler(Context context) { super(context, DATABASE_NAME, null, DATABASE_VERSION); } @Override public void onCreate(SQLiteDatabase db) { String CREATE_CONTACTS_TABLE = "CREATE TABLE " + TABLE_CONTACTS + "(" + KEY_ID + " INTEGER PRIMARY KEY," + KEY_NAME + " TEXT," + KEY_PH_NO + " TEXT" + ")"; db.execSQL(CREATE_CONTACTS_TABLE); } @Override public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) { db.execSQL("DROP TABLE IF EXISTS " + TABLE_CONTACTS); onCreate(db); } void addContact(StudentInfo studentInfo) { SQLiteDatabase db = this.getWritableDatabase(); ContentValues values = new ContentValues(); values.put(KEY_NAME, studentInfo.getName()); // Contact Name values.put(KEY_PH_NO, studentInfo.getPhoneNumber()); // Contact Phone db.insert(TABLE_CONTACTS, null, values); db.close(); } StudentInfo getContact(int id) { SQLiteDatabase db = this.getReadableDatabase(); Cursor cursor = db.query(TABLE_CONTACTS, new String[] { KEY_ID, KEY_NAME, KEY_PH_NO }, KEY_ID + "=?", new String[] { String.valueOf(id) }, null, null, null, null); if (cursor != null) cursor.moveToFirst(); StudentInfo studentInfo = new StudentInfo(Integer.parseInt(cursor.getString(0)), cursor.getString(1), cursor.getString(2)); // return contact return studentInfo; } public List&lt;StudentInfo&gt; getAllStudentInfo() { List&lt;StudentInfo&gt; studentList = new ArrayList&lt;StudentInfo&gt;(); String selectQuery = "SELECT * FROM " + TABLE_CONTACTS; SQLiteDatabase db = this.getWritableDatabase(); Cursor cursor = db.rawQuery(selectQuery, null); if (cursor.moveToFirst()) { do { StudentInfo studentInfo = new StudentInfo(); studentInfo.setID(Integer.parseInt(cursor.getString(0))); studentInfo.setName(cursor.getString(1)); studentInfo.setPhoneNumber(cursor.getString(2)); studentList.add(studentInfo); } while (cursor.moveToNext()); } return studentList; } public int updateContact(StudentInfo studentInfo) { SQLiteDatabase db = this.getWritableDatabase(); ContentValues values = new ContentValues(); values.put(KEY_NAME, studentInfo.getName()); values.put(KEY_PH_NO, studentInfo.getPhoneNumber()); return db.update(TABLE_CONTACTS, values, KEY_ID + " = ?", new String[] { String.valueOf(studentInfo.getID()) }); }} </code></pre> <p>2:StudentInfo</p> <pre><code>package as.d.d; public class StudentInfo { int _id; String _name; String _phone_number; public StudentInfo(){ } public StudentInfo(int id, String name, String _phone_number){ this._id = id; this._name = name; this._phone_number = _phone_number; } public StudentInfo(String name, String _phone_number){ this._name = name; this._phone_number = _phone_number; } public int getID(){ return this._id; } public void setID(int id){ this._id = id; } public String getName(){ return this._name; } public void setName(String name){ this._name = name; } public String getPhoneNumber(){ return this._phone_number; } public void setPhoneNumber(String phone_number){ this._phone_number = phone_number; }} </code></pre> <p>3:add</p> <pre><code>package as.d.d; import java.util.List; import android.app.Activity; import android.content.Intent; import android.os.Bundle; import android.util.Log; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; import android.widget.EditText; import android.widget.TextView; import android.widget.Toast; public class add extends Activity implements OnClickListener{ Button b1,b2; EditText e2,e3; TextView t1; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.add); b1=(Button)findViewById(R.id.button1); b2=(Button)findViewById(R.id.button2); e2=(EditText)findViewById(R.id.editText2); e3=(EditText)findViewById(R.id.editText3); t1=(TextView)findViewById(R.id.AtextView1); b1.setOnClickListener(this); b2.setOnClickListener(this); DatabaseHandler db = new DatabaseHandler(this); List&lt;StudentInfo&gt; studentInfo = db.getAllStudentInfo(); for (StudentInfo cn : studentInfo){ t1.setText("Id:"+(cn.getID()+1)); } } @Override public void onClick(View v) { if(v==b2){ startActivity(new Intent(add.this, FdActivity.class)); } else if(v==b1){ String s2=e2.getText().toString(); String s3=e3.getText().toString(); if(s2.trim().equals("")||s3.trim().equals("")){ Toast.makeText(getApplicationContext(), "Please Submit Student Information",Toast.LENGTH_SHORT).show(); } else{ DatabaseHandler db = new DatabaseHandler(this); Log.d("Insert: ", "Inserting .."); db.addContact(new StudentInfo(s2,s3)); Log.d("Reading: ", "Reading all contacts.."); List&lt;StudentInfo&gt; studentInfo = db.getAllStudentInfo(); for (StudentInfo cn : studentInfo){ t1.setText("Id:"+(cn.getID()+1)); }}}}} </code></pre> <p>4:addmark</p> <pre><code>package as.d.d; import java.util.ArrayList; import java.util.List; import android.app.Activity; import android.os.Bundle; import android.view.View; import android.widget.AdapterView; import android.widget.AdapterView.OnItemClickListener; import android.widget.ArrayAdapter; import android.widget.AutoCompleteTextView; import android.widget.TextView; import android.widget.Toast; public class addmark extends Activity{ AutoCompleteTextView a1; TextView t1,t2; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.addmark); a1=(AutoCompleteTextView)findViewById(R.id.autoCompleteTextView1); t1=(TextView)findViewById(R.id.amtextView1); t2=(TextView)findViewById(R.id.amtextView2); DatabaseHandler db = new DatabaseHandler(this); final List&lt;StudentInfo&gt; studentInfo = db.getAllStudentInfo(); final ArrayList&lt;String&gt; s1 = new ArrayList&lt;String&gt;(); final ArrayList&lt;String&gt; s3 = new ArrayList&lt;String&gt;(); for (StudentInfo cn : studentInfo) { s1.add(cn.getName()); s3.add(cn.getPhoneNumber()); } ArrayAdapter&lt;String&gt; adapter = new ArrayAdapter&lt;String&gt;(this, android.R.layout.simple_dropdown_item_1line,s1); a1.setThreshold(1); a1.setAdapter(adapter); a1.setOnItemClickListener(new OnItemClickListener() { @Override public void onItemClick(AdapterView&lt;?&gt; arg0, View arg1, int arg2, long arg3) { } }); </code></pre> <p>In 3rd class(add) I am using a Textview for autogenerated student id(numerical(int) and two text field for submit student name and phone number into database by pressing a button.Here the Student Id,Name and phone number submitted succesfully.In fourth class I use an autocomplete textview for showing the names which I submitted from class 3.When I select a name suppose Farhan(which I already submitted into database and the id is 4 and phone number is 99876 stored in database) then I want to see the id and phone number in two textview(TextView t1,t2;)?</p>
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