Monday 15 July 2013


   Simple List View Example using array list





   Create New Project > ListViewDemo

Create Class >
                                                        MainActivity.java


package com.andr.listviewdemo;

import java.util.ArrayList;

import android.os.Bundle;
import android.app.Activity;
import android.app.ListActivity;
import android.view.Menu;
import android.widget.ArrayAdapter;
import android.widget.ListView;

public class MainActivity extends Activity {
ListView listview;
ArrayList<String> list=null;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
listview=(ListView)findViewById(R.id.listViewset);
list=new ArrayList<String>();
list.clear();
list.add("Android");
list.add("Iphone");
list.add("Blackberry");
list.add("Java");
list.add("Php");
list.add("Asp.net");
list.add("Sap");
list.add("Seo");
ArrayAdapter<String>  adapter=new ArrayAdapter<String>(getApplicationContext(), android.R.layout.simple_list_item_1,list);
listview.setAdapter(adapter);

 

}




}


Write code in xml:   activity_main.xml

<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:background="@android:color/white"
    >

    

    <ListView
        android:id="@+id/listViewset"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="@android:color/black"
         android:cacheColorHint="#00000000"
        android:listSelector="@android:color/transparent"
        
      
       >
    </ListView>


</RelativeLayout>

Run The Project   



Saturday 13 July 2013

Android CountDownTimer Example





 Hello Friends Today I will write a code for CountDownTimer .

STEP 1:  Create a project TimerExample

STEP 2: Write this code in MainActivity

import android.os.Bundle;
import android.os.CountDownTimer;
import android.app.Activity;
import android.util.Log;
import android.view.Menu;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;

public class MainActivity extends Activity {
private CountDownTimer countDownTimer;

private long starttime = 3600 * 1000;
private final long interval = 1 * 1000;
private int secs;
private int hours;
private int minutes;
private int seconds;
private long remainingmillisec;
private long total;
private TextView tvtimer;
private Button start,pause;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
tvtimer=(TextView)findViewById(R.id.tv_timer);
start=(Button)findViewById(R.id.buttonstart);
pause=(Button)findViewById(R.id.buttonpause);




start.setOnClickListener(new View.OnClickListener() {

@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
Log.d("Startime", "KK"+starttime);
countDownTimer = new MyCountDownTimer(starttime, interval);
secs = (int) (starttime / 1000);
hours=secs/3600;
minutes=(secs%(60*60)/60);
seconds=(secs%(60*60)%60);
tvtimer.setText("" + String.format("%02d", hours)+ ":"+ String.format("%02d", minutes) + ":"+ String.format("%02d", seconds));
countDownTimer.start();

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

@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
countDownTimer.cancel();

starttime=remainingmillisec;
Log.d("StoTime", "KK"+starttime);
}
});

}
public class MyCountDownTimer extends CountDownTimer {
public MyCountDownTimer(long starttime, long interval) {

super(starttime, interval);
}

@Override
public void onFinish() {
tvtimer.setText("Time's up!");


}
public void resume(){}
@Override
public void onTick(long millisUntilFinished) {

remainingmillisec=millisUntilFinished;
secs=(int)(millisUntilFinished/1000);

hours=secs/3600;
minutes=(secs%(60*60)/60);
    seconds=(secs%(60*60)%60);

tvtimer.setText("" + String.format("%02d", hours) + ":"+ String.format("%02d", minutes) + ":"+ String.format("%02d", seconds));

}
}


}

STEP 3: Write this code in activity_main  xml file

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

    <TextView
        android:id="@+id/tv_timer"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="63dp"
        android:text="01:00:00"
        android:textAppearance="?android:attr/textAppearanceMedium" />

    <Button
        android:id="@+id/buttonstart"
        android:layout_width="100dp"
        android:layout_height="wrap_content"
        android:layout_below="@+id/tv_timer"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="56dp"
        android:textStyle="bold"
        android:text="Start" />

    <Button
        android:id="@+id/buttonpause"
        android:layout_width="100dp"
        android:layout_height="wrap_content"
     android:layout_centerHorizontal="true"
        android:layout_below="@+id/buttonstart"
        android:layout_marginTop="29dp"
         android:textStyle="bold"
        android:text="Pause" />

</RelativeLayout>


 STEP 4: Write this code in manifest  file

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.ritesh.timerexample"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="9" />

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name="com.ritesh.timerexample.MainActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>


Run The Project .