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);
}
}











Change icons of checked and unchecked for Checkbox
java - How to manage layout with checkbox in Android
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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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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>








Android wrap_content and fill_parent example

What's the difference between fill_parent and wrap_content?

Android Wrap_content And Fill_parent Example

Android wrap_content and fill_parent example

android edittext password settransformationmethod

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android edittext admin

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Android Password Field Example

Android EditText Example

How to display Toast in Android?

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Tuesday, January 27, 2015

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);
}
}






















Android Application Add two numbers Calculator

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Learn Android: Add Two Number Source code

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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);
}
}






















Android Application Add two numbers Calculator

adding two numbers in android

Learn Android: Add Two Number Source code

Android code to add two numbers

Android Application Development: Addition of Two number

How to take input from users and add 2 numbers in android

How to create a Calculator App for Android

Android tutorial make android calculator app video how

Searches related to simple calculator app android

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Creating a simple calculator

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



Managing the Activity Lifecycle
Starting an Activity | Android Developers
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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 20, 2015

The Solution: Rendering video onto the inside walls of a 3D room

So after a lot of experimentation, I decided that WebGL was a good way to go ( see an earlier post  about automatically showing videos on a 3D models walls).

I took the video example and simply hacked around, watching where objects move to when I changed values, and then added extra objects, in this case walls.



And it worked! Which is pretty impressive ( I think ) for someone who knows nothing about 3D programming. Here is a live version showing music I loved from the 70s.

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());
}

}














- Ways to iterate over a List in java?

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Learning Java in simple and easy steps : A beginner's tutorial containing complete knowledge of Java Syntax Object Oriented Language, Methods, Overriding, Inheritance, Polymorphism, Interfaces, Packages, Collections, Networking, Multithreading, Generics, Multimedia, Serialization, GUI





Extra Tags: Java, Tutorials, Learning, Beginners, Basics, Object Oriented Language, Methods, Overriding, Inheritance, Polymorphism, Interfaces, Packages, Collections, Networking, Multithreading, Generics, Multimedia, Serialization, GUI,Learn,Java,Tutorial,Interactive,Free,java programming, Books,,java programming, Books,

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