Saturday, January 31, 2015

Android Tutorial for Beginners 9 # Android Checkbox Basics With Example













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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" android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    android:paddingBottom="@dimen/activity_vertical_margin" tools:context=".MainActivity"
    android:id="@+id/abc">

    <CheckBox
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="Dog"
        android:id="@+id/checkBox_dog"
        android:layout_alignParentTop="true"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true"
        android:layout_marginTop="46dp"
        android:checked="false" />

    <CheckBox
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="Cat"
        android:id="@+id/checkBox_cat"
        android:layout_below="@+id/checkBox_dog"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true"
        android:layout_marginTop="34dp"
        android:checked="false" />

    <CheckBox
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="Cow"
        android:id="@+id/checkBox_cow"
        android:layout_below="@+id/checkBox_cat"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true"
        android:layout_marginTop="39dp"
        android:checked="false" />

    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Select"
        android:id="@+id/button"
        android:layout_centerVertical="true"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true" />
</RelativeLayout>





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package com.example.programmingknowledge.thefirstapp;

import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.CheckBox;
import android.widget.Button;
import android.widget.Toast;

public class MainActivity extends ActionBarActivity {
    private CheckBox check1,check2 ,check3;
    private Button button_sel;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        addListenerOnButton();
        addListnerToCheckBox();
    }
    public void addListnerToCheckBox() {
        check1 = (CheckBox)findViewById(R.id.checkBox_dog);
        check1.setOnClickListener(
                new View.OnClickListener() {
                    @Override
                    public void onClick(View v) {
                        if(((CheckBox)v).isChecked()) {
                            Toast.makeText(MainActivity.this,
                                    "Dog is selected",Toast.LENGTH_LONG).show();
                        }
                    }
                }
        );
    }

    public void addListenerOnButton() {
        check1 = (CheckBox)findViewById(R.id.checkBox_dog);
        check2 = (CheckBox)findViewById(R.id.checkBox_cat);
        check3 = (CheckBox)findViewById(R.id.checkBox_cow);
        button_sel = (Button)findViewById(R.id.button);

        button_sel.setOnClickListener(
                new View.OnClickListener() {
                    @Override
                    public void onClick(View v) {
                        StringBuffer result = new StringBuffer();
                        result.append("Dog : ").append(check1.isChecked());
                        result.append("\nCat : ").append(check2.isChecked());
                        result.append("\nCow : ").append(check3.isChecked());

                        Toast.makeText(MainActivity.this,result.toString(),
                                Toast.LENGTH_LONG).show();
                    }
                }

        );

    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.menu_main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();

        //noinspection SimplifiableIfStatement
        if (id == R.id.action_settings) {
            return true;
        }

        return super.onOptionsItemSelected(item);
    }
}











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Extra Tags : Android,  programming, tutorial, beginners , develop, ,mobile phone, Environment Setup, Application Components, Activity Lifecycle, Service Lifecycle, Application Architecture, Publishing Application, Debugging  Applications, Hadnling Events, Layouts, User Interface Controls, Styles and Themes,  Handling Rotation, data storage, managing media, Send Email, Send SMS, Phone Calls, Checkbox , Android components, Checkbox click listener,select multiple items,show selected checkbox

Thursday, January 29, 2015

Android Tutorial for Beginners 8 # wrap_content, fill_parent, Password F...













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package com.example.programmingknowledge.thefirstapp;

import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
public class MainActivity extends ActionBarActivity {
    private EditText pass_word;
    private Button button_sbm;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        addListnerOnButton();
    }
    public void addListnerOnButton() {
        pass_word = (EditText)findViewById(R.id.editText);
        button_sbm =(Button) findViewById(R.id.button);
        button_sbm.setOnClickListener(
                new View.OnClickListener() {
                    @Override
                    public void onClick(View v) {
                      Toast.makeText(
                              MainActivity.this,  pass_word.getText() ,
                              Toast.LENGTH_SHORT
                      ).show();
                    }
                }

        );
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.menu_main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();

        //noinspection SimplifiableIfStatement
        if (id == R.id.action_settings) {
            return true;
        }

        return super.onOptionsItemSelected(item);
    }
}









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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" android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    android:paddingBottom="@dimen/activity_vertical_margin" tools:context=".MainActivity"
    android:id="@+id/abc">

    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Button"
        android:id="@+id/button"
        android:layout_marginTop="79dp"
        android:layout_below="@+id/editText"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true" />

    <EditText
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:inputType="textPassword"
        android:ems="10"
        android:id="@+id/editText"
        android:layout_alignParentTop="true"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true" />
</RelativeLayout>








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Android Tutorial for Beginners 8 # wrap_content, fill_parent, Password F...













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package com.example.programmingknowledge.thefirstapp;

import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
public class MainActivity extends ActionBarActivity {
    private EditText pass_word;
    private Button button_sbm;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        addListnerOnButton();
    }
    public void addListnerOnButton() {
        pass_word = (EditText)findViewById(R.id.editText);
        button_sbm =(Button) findViewById(R.id.button);
        button_sbm.setOnClickListener(
                new View.OnClickListener() {
                    @Override
                    public void onClick(View v) {
                      Toast.makeText(
                              MainActivity.this,  pass_word.getText() ,
                              Toast.LENGTH_SHORT
                      ).show();
                    }
                }

        );
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.menu_main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();

        //noinspection SimplifiableIfStatement
        if (id == R.id.action_settings) {
            return true;
        }

        return super.onOptionsItemSelected(item);
    }
}
















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Tuesday, January 27, 2015

Android Tutorial for Beginners 7 # Adding Two Numbers App (Simple Calcu...











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package com.example.programmingknowledge.thefirstapp;

import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.EditText;
import android.widget.TextView;


public class MainActivity extends ActionBarActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

    }

    public void onButtonClick(View v) {
        EditText e1 = (EditText)findViewById(R.id.editText);
        EditText e2 = (EditText)findViewById(R.id.editText2);
        TextView t1 = (TextView)findViewById(R.id.textView);
        int num1 = Integer.parseInt(e1.getText().toString());
        int num2 = Integer.parseInt(e2.getText().toString());
        int sum = num1 + num2 ;
        t1.setText(Integer.toString(sum));
    }


    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.menu_main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();

        //noinspection SimplifiableIfStatement
        if (id == R.id.action_settings) {
            return true;
        }

        return super.onOptionsItemSelected(item);
    }
}






















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Android Tutorial for Beginners 7 # Adding Two Numbers App (Simple Calculator)











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package com.example.programmingknowledge.thefirstapp;

import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.EditText;
import android.widget.TextView;


public class MainActivity extends ActionBarActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

    }

    public void onButtonClick(View v) {
        EditText e1 = (EditText)findViewById(R.id.editText);
        EditText e2 = (EditText)findViewById(R.id.editText2);
        TextView t1 = (TextView)findViewById(R.id.textView);
        int num1 = Integer.parseInt(e1.getText().toString());
        int num2 = Integer.parseInt(e2.getText().toString());
        int sum = num1 + num2 ;
        t1.setText(Integer.toString(sum));
    }


    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.menu_main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();

        //noinspection SimplifiableIfStatement
        if (id == R.id.action_settings) {
            return true;
        }

        return super.onOptionsItemSelected(item);
    }
}






















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Sunday, January 25, 2015

onButtonClick





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   public void onButtonClick(View v) {
        EditText ei = (EditText)findViewById(R.id.editText);
        EditText e2 = (EditText)findViewById(R.id.editText2);
        TextView t1 = (TextView)findViewById(R.id.textView);
        int a =Integer.parseInt(ei.getText().toString());
        int b =Integer.parseInt(e2.getText().toString());
        int sum = a+b;
        t1.setText(Integer.toString(sum));
    }





Android Activity Life cycle State Changes  Example 



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package com.example.programmingknowledge.myfirstapp;

import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.EditText;
import android.widget.TextView;
import android.util.Log;

public class MainActivity extends ActionBarActivity {
    private static final String MY_TAG = "the_custom_message";
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Log.i(MY_TAG,"onCreate");
    }

    @Override
    protected void onStart() {
        super.onStart();
        Log.i(MY_TAG, "onStart");
    }


    @Override
    protected void onResume() {
        super.onResume();
        Log.i(MY_TAG, "onResume");
    }


    @Override
    protected void onPause() {
        super.onPause();
        Log.i(MY_TAG, "onPause");
    }


    @Override
    protected void onStop() {
        super.onStop();
        Log.i(MY_TAG, "onStop");
    }


    @Override
    protected void onRestart() {
        super.onRestart();
        Log.i(MY_TAG, "onRestart");
    }


    @Override
    protected void onDestroy() {
        super.onDestroy();
        Log.i(MY_TAG, "onDestroy");
    }



    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.menu_main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();

        //noinspection SimplifiableIfStatement
        if (id == R.id.action_settings) {
            return true;
        }

        return super.onOptionsItemSelected(item);
    }
}















ANDROID ACTIVITY LIFE CYCLE http://developer.android.com/reference/android/app/Activity.html#ActivityLifecycle



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Extra Tags : Android,  programming, tutorial, beginners , develop, ,mobile phone, Environment Setup, Application Components, Activity Lifecycle, Service Lifecycle, Application Architecture, Publishing Application, Debugging  Applications, Hadnling Events, Layouts, User Interface Controls, Styles and Themes,  Handling Rotation, data storage, managing media, Send Email, Send SMS, Phone Calls

Tuesday, January 13, 2015

Java Tutorial For Beginners 34 - ListIterator in Java









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package lesson1;
/*
public boolean hasNext();
public Object next();
public boolean hasPrevious();
public Object previous();
 */
import java.util.*;

public class MyClass {

 public static void main(String[] args) {
  ArrayList<String> names = new ArrayList<String>();
  names.add("Mark");
  names.add("tom");
  names.add("john");
  names.add("jack");
  names.add("patrik");
  
  ListIterator<String> itr = names.listIterator();
  while(itr.hasNext())
   System.out.println(itr.next());
  
  System.out.println("");System.out.println("");
  
  while(itr.hasPrevious())
   System.out.println(itr.previous());
 }
    
}














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Sunday, January 4, 2015

C Programming for Beginners 25 - (struct) Structures in C













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struct student {
   int id;
   char name[20];
   float percentage;
} record;

int main()
{
 record.id = 1;
 strcpy(record.name,"John");
 record.percentage =70.20;

 printf("id = %d   Name=%s   Percent=%f \n",
        record.id,record.name,record.percentage);

 return 0;
}












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Microphone - http://amzn.to/2AC1kV0

notebook mouse - http://amzn.to/2BmeZ2d