Wednesday, December 17, 2014
How to use & access In android
First create object:-
WebAPIRequest web = new WebAPIRequest();
WebUrl weburl = new WebUrl();
Call Url and Execute :-
url = weburl .setURL() + "CompanyList";
new get_alert_activity().execute(url);
public class get_alert_activity extends AsyncTask<String, Void, Void> {
@Override
protected void onPreExecute() {
// TODO Auto-generated method stub
super.onPreExecute();
try {
} catch (Exception e) {
e.getMessage();
}
}
@Override
protected Void doInBackground(String... params) {
// TODO Auto-generated method stub
try {
response = web.performGet(params[0]);
Log.i("Response Display Extraactivity", response);
} catch (Exception e) {
e.getMessage();
}
return null;
}
@Override
protected void onPostExecute(Void result) {
// TODO Auto-generated method stub
super.onPostExecute(result);
try {
Log.i("Test", response);
getjsontoListviewCompanyList(response);
datalistview dlv = new datalistview();
lv.setAdapter(dlv);
} catch (Exception e) {
e.getMessage();
}
}
}
public void getjsontoListviewCompanyList(String result) {
try {
jsonArray = new JSONArray(result);
for (i = 0; i <= jsonArray.length(); i += 1) {
list.add(jsonArray.getString(i));
lv.setAdapter(new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, list));
-------How to Use split Function and access String data-----------------------------------
JSONObject jobj;
jobj=new JSONObject(result);
String str1=jobj.getString("exam_get_questionsResult");
str2 = str1.split(";");
len=str2.length;
totallen=len;
Log.i("lengthofstring",String.valueOf( str2.length) );
newquestion = new String[len*6];
for(int i=0 ; i < str2.length;i++)
{
quetiondata = str2[i].split(",");
for(int k=0;k<6;k++)
{
newquestion[j]=quetiondata[k];
Log.i("Question",j + newquestion[j]);
j++;
}
}
-------End Split Function Code--------------------------------
}
} catch (Exception e) {
// TODO: handle exception
Toast.makeText(getApplicationContext(), e.getMessage(),
Toast.LENGTH_SHORT).show();
Log.i("Result Response", e.getMessage());
}
}
public class datalistview extends BaseAdapter {
@Override
public int getCount() {
// TODO Auto-generated method stub
return list.size();
}
@Override
public Object getItem(int pos) {
// TODO Auto-generated method stub
return list.get(pos);
}
@Override
public long getItemId(int pos) {
// TODO Auto-generated method stub
return pos;
}
@Override
public View getView(int pos, View convertedView, ViewGroup viewgroup) {
// TODO Auto-generated method stub
LayoutInflater inflater = getLayoutInflater();
inflater = LayoutInflater.from(CompanyList.this);
convertedView = inflater.inflate(R.layout.list, null);
TextView tv = (TextView) convertedView
.findViewById(R.id.branch_name);
tv.setText(list.get(pos));
return convertedView;
}
}
Sunday, September 7, 2014
Android interview questions
Android interview questions : Interview Important question answer in Android
Monday, August 4, 2014
Create a Simple Calculator In Android
--------------------------------------------------------------------------------------
Note:- First Create New Android Application(Project) And After Followed Following Step's
--------------------------------------------------------------------------------------
Step:- 1
XML: Go To Activity_main.xml OR main.xml File And Add Following xml Code ....
<?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" android:paddingTop="15dp">
<RelativeLayout android:layout_height="wrap_content"
android:id="@+id/relativeLayout1" android:layout_width="match_parent">
</RelativeLayout>
<LinearLayout android:layout_height="wrap_content"
android:layout_width="match_parent" android:id="@+id/linearLayout1">
<TextView android:text="Enter first values" android:id="@+id/txt1"
android:layout_width="wrap_content" android:layout_height="wrap_content"
android:textStyle="bold"></TextView>
<EditText android:text="" android:id="@+id/editText1"
android:layout_width="fill_parent" android:layout_height="wrap_content"
android:singleLine="true"></EditText>
</LinearLayout>
<LinearLayout android:layout_height="wrap_content"
android:layout_width="match_parent" android:id="@+id/linearLayout2">
<TextView android:text="Enter second value" android:id="@+id/txt2"
android:layout_width="wrap_content" android:layout_height="wrap_content"></TextView>
<EditText android:text="" android:id="@+id/editText2"
android:layout_width="fill_parent" android:layout_height="wrap_content"
android:singleLine="true"></EditText>
</LinearLayout>
<LinearLayout android:layout_height="wrap_content"
android:layout_width="match_parent" android:id="@+id/linearLayout3"
android:padding="15dp">
<TextView android:text="Answer = " android:id="@+id/txt3"
android:layout_width="wrap_content" android:layout_height="wrap_content"
android:textSize="30dp"></TextView>
<TextView android:text="" android:id="@+id/txt4"
android:layout_width="fill_parent" android:layout_height="wrap_content" android:paddingLeft="20dp"></TextView>
</LinearLayout>
<LinearLayout android:layout_height="wrap_content"
android:layout_width="match_parent" android:id="@+id/linearLayout4"
android:paddingTop="20dp" android:paddingLeft="55dp">
<Button android:text="+" android:id="@+id/btn1"
android:layout_width="wrap_content" android:layout_height="wrap_content"
android:textSize="40dp"></Button>
<Button android:text="-" android:id="@+id/btn2"
android:layout_width="wrap_content" android:layout_height="wrap_content"
android:textSize="40dp"></Button>
<Button android:text="*" android:id="@+id/btn3"
android:layout_width="wrap_content" android:layout_height="wrap_content"
android:textSize="40dp"></Button>
<Button android:layout_height="wrap_content"
android:layout_width="wrap_content" android:text="/" android:id="@+id/btn4"
android:textSize="40dp"></Button>
<Button android:text="%" android:id="@+id/btn5"
android:layout_width="wrap_content" android:layout_height="wrap_content"
android:textSize="40dp"></Button>
</LinearLayout>
</LinearLayout>
--------------------------------------------------------------------------------------
Step:- 2
JAVA:- Go To src Folder --> Go To Java Package --> Go To .java File And Write Following java Code....
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
public class calculatertest extends Activity {
/** Called when the activity is first created. */
TextView tv1;
EditText ed1,ed2;
Button sum,sub,mul,div,mod;
int v1, v2 ,ans;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
ed1=(EditText)findViewById(R.id.editText1);
ed2=(EditText)findViewById(R.id.editText2);
tv1=(TextView)findViewById(R.id.txt4);
sum=(Button)findViewById(R.id.btn1);
sub=(Button)findViewById(R.id.btn2);
mul=(Button)findViewById(R.id.btn3);
div=(Button)findViewById(R.id.btn4);
mod=(Button)findViewById(R.id.btn5);
sum.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
v1=Integer.parseInt(ed1.getText().toString().trim());
v2=Integer.parseInt(ed2.getText().toString().trim());
ans=v1+v2;
tv1.setText(String.valueOf(ans).toString());
}
});
sub.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
v1=Integer.parseInt(ed1.getText().toString().trim());
v2=Integer.parseInt(ed2.getText().toString().trim());
ans=v1-v2;
tv1.setText(String.valueOf(ans).toString());
}
});
mul.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
v1=Integer.parseInt(ed1.getText().toString().trim());
v2=Integer.parseInt(ed2.getText().toString().trim());
ans=v1*v2;
tv1.setText(String.valueOf(ans).toString());
}
});
div.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
v1=Integer.parseInt(ed1.getText().toString().trim());
v2=Integer.parseInt(ed2.getText().toString().trim());
ans=v1/v2;
tv1.setText(String.valueOf(ans).toString());
}
});
mod.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
v1=Integer.parseInt(ed1.getText().toString().trim());
v2=Integer.parseInt(ed2.getText().toString().trim());
ans=v1%v2;
tv1.setText(String.valueOf(ans).toString());
}
});
}
}
--------------------------------------------------------------------------------------
Step:- 3
Now Run Your Android Application(Project) and Check Your Project Output.......
OUTPUT:- Screen Short
Wednesday, July 23, 2014
How To Create Email Validation....
Create login application where you will have to validate EmailID (UserName). Till the username and password is not validated , login button should remain disabled.
--------------------------------------------------------------------------------------
Note:- First Create New Android Application(Project) And After Followed Following Step's
Step:- 1
XML: Go To Activity_main.xml File And Add Following Code....
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#F0F0F0"
android:orientation="vertical" >
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="10dp"
android:text=" Login Form"
android:textAllCaps="true"
android:textAppearance="?android:attr/textAppearanceLarge"
android:textColor="#176CEC"
android:textStyle="bold" />
<EditText
android:id="@+id/editText_email"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#fff"
android:ems="10"
android:hint="Enter Email Id"
android:inputType="textEmailAddress"
android:padding="12dp" />
<Button
android:id="@+id/btn_signup"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="20dp"
android:background="#176CEC"
android:text="Check Valid Email"
android:textAppearance="?android:attr/textAppearanceLarge"
android:textColor="#fff"
android:textStyle="bold" />
</LinearLayout>
Step:- 2
JAVA:- Go To Activity_main.java File And Write Following Code....
package com.chirag.emailvalidation;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
import android.view.Menu;
public class MainActivity extends Activity {
EditText emailEditText;
Button btn_click;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
emailEditText = (EditText) findViewById(R.id.editText_email);
btn_click=(Button)findViewById(R.id.btn_signup);
btn_click.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
final String email = emailEditText.getText().toString();
if (!isValidEmail(email))
{
emailEditText.setError("Invalid Email");
Toast.makeText(getApplicationContext(),
"Invalid Email", Toast.LENGTH_LONG).show();
btn_click.setEnabled(true);
}
else
{
//emailEditText.setError("Valid Email");
Toast.makeText(getApplicationContext(),
"Valid Email", Toast.LENGTH_LONG).show();
btn_click.setEnabled(false);
}
}
});
}
// validating email id
private boolean isValidEmail(String email) {
String EMAIL_PATTERN = "^[_A-Za-z0-9-\\+]+(\\.[_A-Za-z0-9-]+)*@"
+ "[A-Za-z0-9-]+(\\.[A-Za-z0-9]+)*(\\.[A-Za-z]{2,})$";
Pattern pattern = Pattern.compile(EMAIL_PATTERN);
Matcher matcher = pattern.matcher(email);
return matcher.matches();
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
}
Step:- 3
Now Run Your Android Application(Project) and Check Your Email Is Validate Or Not.......
OUTPUT:- Screen Short
Sunday, July 20, 2014
How to Use DatePicker Control
Main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<Button
android:id="@+id/changeDate"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Click To Change Date" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Current/Selected Date (M-D-YYYY): "
android:textAppearance="?android:attr/textAppearanceLarge" />
<EditText
android:id="@+id/editText1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:ems="10" >
<requestFocus />
</EditText>
</LinearLayout>
Activity_main.java
package com.chirag.datepicker;
import com.android.datepicker.R;
import java.util.Calendar;
import android.app.Activity;
import android.app.DatePickerDialog;
import android.app.Dialog;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.DatePicker;
import android.widget.EditText;
public class DatePickerExample extends Activity {
private Button changeDate;
public EditText ed;
private int year;
private int month;
private int day;
static final int DATE_PICKER_ID = 709;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
changeDate = (Button) findViewById(R.id.changeDate);
ed=(EditText)findViewById(R.id.editText1);
// Get current date by calender
final Calendar c = Calendar.getInstance();
year = c.get(Calendar.YEAR);
month = c.get(Calendar.MONTH);
day = c.get(Calendar.DAY_OF_MONTH);
// Show current date
ed.setText(new StringBuilder()
// Month is 0 based, just add 1
.append(month + 1).append("-").append(day).append("-")
.append(year).append(" "));
// Button listener to show date picker dialog
changeDate.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// On button click show datepicker dialog
showDialog(DATE_PICKER_ID);
}
});
ed.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
showDialog(DATE_PICKER_ID);
}
});
}
@Override
protected Dialog onCreateDialog(int id)
{
switch (id)
{
case DATE_PICKER_ID:
// open datepicker dialog.
// set date picker for current date
// add pickerListener listner to date picker
return new DatePickerDialog(this, pickerListener, year, month,day);
}
return null;
}
private DatePickerDialog.OnDateSetListener pickerListener = new DatePickerDialog.OnDateSetListener()
{
// when dialog box is closed, below method will be called.
@Override
public void onDateSet(DatePicker view, int selectedYear,
int selectedMonth, int selectedDay) {
year = selectedYear;
month = selectedMonth;
day = selectedDay;
// Show selected date
ed.setText(new StringBuilder().append(month + 1)
.append("-").append(day).append("-").append(year)
.append(" "));
}
};
}
Screen Short:-
