Learn Developing

Sunday, February 18, 2018

How To Build Android Rating bar Example In Eclips

This Is A Simple Example For How To Build Rating bar in Android............

Following Are The Example.....

[1] Ratingbarctivity.java File

package com.dvp.rat;

import android.app.Activity;

import android.os.Bundle;

import android.view.View;

import android.widget.Button;

import android.widget.RatingBar;

import android.widget.Toast;

public class RaringbarActivity extends Activity {

/** Called when the activity is first created. */

RatingBar r;

Button b;

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.main);

r=(RatingBar)findViewById(R.id.ratingBar1);

b=(Button)findViewById(R.id.button1);

b.setOnClickListener(new View.OnClickListener() {

public void onClick(View v) {

// TODO Auto-generated method stub

String rat= String.valueOf(r.getRating());

Toast.makeText(getApplicationContext(),rat, 2).show();

}

});

}

[2] Main.xml File

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

android:orientation="vertical"

android:layout_width="fill_parent"

android:layout_height="fill_parent"

<TextView

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:text="@string/hello"

</LinearLayout>

Thursday, February 15, 2018

Weka Data Mining Tutorial for First Time & Beginner User

This Video Is About How To Use Weka For Data Mining Process.

And How To Create .csv File And .arff File For Weka ......

Test

Simple How To Put Email Validation In HTML 5

In Below Code Is About Put Validation In HTML 5

required="required"

pattern="\w+([-+.']\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*"

title="please enter proper email"

Tuesday, February 13, 2018

Simple How To Use Internet Permission In Android Eclipes

This Video Is About How To Use Internet Permission In Android Application

Monday, February 12, 2018

Simple Build How To Read And Write File In Android

In This Example We See How To Read And Write File In Android With The Use
of SharedPrefrence.

In This I Tack Following Controls.

1. Two Button
2.One Edittext
3. One Textview

Following Are The Code For Read And Write File In Android....

[1] Mainactivity.java

package com.demo.file;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;

import android.app.Activity;
import android.content.Context;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.os.Environment;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;

public class FilehandlingdemoActivity extends Activity
{
String FileName = "datafile";
Button save,read;
EditText e1;
TextView t1;
String name;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
save =(Button)findViewById(R.id.sbtn);
read=(Button)findViewById(R.id.rbtn);
e1=(EditText)findViewById(R.id.editText1);
t1=(TextView)findViewById(R.id.textView1);
save.setOnClickListener(new View.OnClickListener()
{

public void onClick(View v)
{
// TODO Auto-generated method stub

saveFile();

}

}
);
read.setOnClickListener(new View.OnClickListener()
{

public void onClick(View v)
{
// TODO Auto-generated method stub
readFile();
}

}
);

}
private void saveFile()
{
// TODO Auto-generated method stub
String strname= e1.getText().toString();
SharedPreferences sp = getSharedPreferences(FileName, Context.MODE_PRIVATE);
SharedPreferences.Editor e= sp.edit();
e.putString("name", strname);
e.commit();
Toast.makeText(this, "Data Save Successfully", Toast.LENGTH_SHORT).show();
}
private void readFile()
{
// TODO Auto-generated method stub
SharedPreferences sp = getSharedPreferences(FileName, Context.MODE_PRIVATE);
String defaultvalue ="defaultname";
String name= sp.getString("name", defaultvalue);
t1.setText(name);
Toast.makeText(this,"Data:"+name, Toast.LENGTH_SHORT).show();

}
}

[2] Main.xml File

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/hello"
/>
<EditText android:id="@+id/editText1" android:layout_height="wrap_content" android:layout_width="match_parent">
<requestFocus></requestFocus>
</EditText>
<LinearLayout android:id="@+id/linearLayout1" android:layout_height="wrap_content" android:layout_width="match_parent" android:orientation="vertical">
<Button android:id="@+id/rbtn" android:layout_height="wrap_content" android:layout_width="wrap_content" android:text="read"></Button>
<Button android:text="save" android:id="@+id/sbtn" android:layout_width="wrap_content" android:layout_height="wrap_content"></Button>
</LinearLayout>
<TextView android:text="TextView" android:id="@+id/textView1" android:layout_width="wrap_content" android:layout_height="wrap_content"></TextView>

</LinearLayout>