Develop an application to display analog Time Picker.
Also display the selected
time. (Write only . java file)
4M
Ans
MainActivity.java
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import android.widget.TimePicker;
public class MainActivity extends AppCompatActivity
{
TextView textview1;
TimePicker timepicker;
Button changetime;
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
textview1=(TextView)findViewById(R.id.textView1);
timepicker=(TimePicker)findViewById(R.id.timePicker);
//Uncomment the below line of code for 24 hour view
timepicker.setIs24HourView(true);
changetime=(Button)findViewById(R.id.button1);
textview1.setText(getCurrentTime());
changetime.setOnClickListener(new View.OnClickListener()
{
@Override
public void onClick(View view)
{
textview1.setText(getCurrentTime());
}
});
}
public String getCurrentTime()
{
String currentTime="Current Time:
"+timepicker.getCurrentHour()+":"+timepicker.getCurrentMinute();
return currentTime;
}
}
Develop an android application using radio button.
4 M {2M XML FILE & 2M JAVA FILE}
Ans
[Consider any relevant example of Radio Button and in XML file, consider
minimum attributes]
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools=http://schemas.android.com/tools
android:layout_width="match_parent"
android:layout_height="match_parent"
android:padding="30dp"
tools:context=".frame">
<TextView android:id="@+id/text1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Radio Button"
android:textSize="20dp"
android:gravity="center"
android:textColor="#f00"/>
<RadioGroup android:id="@+id/group"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@+id/text1">
<RadioButton android:id="@+id/male"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Male"/>
<RadioButton
android:id="@+id/female"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/male"
android:text="Female"/>
</RadioGroup>
<Button android:id="@+id/submit"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/group"
android:layout_marginTop="99dp"
android:layout_centerHorizontal="true"
android:text="Submit" />
</RelativeLayout>
Java File:
package com.example.ifcdiv;
import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.RadioButton;
import android.widget.Toast;
public class frame extends AppCompatActivity
{
RadioButton male,female;
Button b1;
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_frame);
male=findViewById(R.id.male);
female=findViewById(R.id.female);
b1=findViewById(R.id.submit);
b1.setOnClickListener(new View.OnClickListener()
{
@Override
public void onClick(View v)
{
String selected; if(male.isChecked())
{
selected="You selected"+male.getText();
}
else
{
selected="You Selected"+female.getText();
}
Toast.makeText(getApplicationContext(),selected,Toast.LENGTH_LONG).show();
}
});
}
}
Write a program to display a rectangular progress bar.
4 M (xml file 2M, java file 2 )
Ans
Xml File:
<?xml version="1.0" encoding="utf-8"?>
<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"
tools:context=".MainActivity">
<ProgressBar
android:id="@+id/progressBar"
style="@android:style/Widget.ProgressBar.Horizontal"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_marginLeft="20dp"
android:layout_marginRight="20dp"
android:layout_marginTop="20dp"
android:indeterminate="false"
android:max="100"
android:minHeight="50dp"
android:minWidth="200dp"
android:progress="1" />
<TextView
android:id="@+id/textView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="@+id/progressBar"
android:layout_below="@+id/progressBar"/>
</RelativeLayout>
Java file:
package in.edu.vpt.progressbar;
import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;
import android.os.Handler;
import android.os.Looper;
import android.widget.ProgressBar;
import android.widget.TextView;
public class MainActivity extends AppCompatActivity
{
private ProgressBar progressBar;
private int progressStatus = 0;
private TextView textView;
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
progressBar = (ProgressBar) findViewById(R.id.progressBar);
textView = (TextView) findViewById(R.id.textView);
// Start long running operation in a background thread
new Thread(new Runnable()
{
public void run()
{
while (progressStatus < 100)
{
progressStatus += 1;
new Handler(Looper.getMainLooper()).post(new Runnable()
{
public void run()
{
progressBar.setProgress(progressStatus);
textView.setText(progressStatus+"/"+progressBar.getMax());
}
});
try
{
// Sleep for 200 milliseconds.
Thread.sleep(200);
}
catch (InterruptedException e)
{
e.printStackTrace();
}
}
}
}).start();
}
}
Develop a program to implement
i)
List view of 5 items
ii)
Grid view of 4 x 4 items
iii)
Image view.
Ans:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context=".MainActivity">
<ListView
android:id="@+id/sample_list"
android:layout_width="match_parent"
android:layout_height="wrap_content" >
</ListView>
<GridView
android:id="@+id/gridview1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:columnWidth="50dp"
android:gravity="center"
android:numColumns="auto_fit"
android:stretchMode="columnWidth" >
</GridView>
<ImageView
android:id="@+id/full_logo"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:srcCompat="@drawable/android_logo" />
</LinearLayout>
Placed image that has to be displayed in drawable folder
package in.msbte.controls_exam_ques;
import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.ArrayAdapter;
import android.widget.GridView;
import android.widget.ListView;
public class MainActivity extends AppCompatActivity
{
String[] sampleArray = {"Item 1","Item 2","Item 3","Item 4", "Item 5"};
GridView gridView;
static final String[] alphabets = new String[]
{
"A", "B", "C", "D", "E",
"F", "G", "H", "I", "J",
"K", "L", "M", "N", "O",
"P", "Q", "R", "S", "T",
"U", "V", "W", "X", "Y", "Z"
};
ArrayAdapter adapter, adapter1;
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//List View
adapter = new ArrayAdapter<String>(this, R.layout.simple_item, sampleArray);
ListView listView = (ListView) findViewById(R.id.sample_list);
listView.setAdapter(adapter);
//Grid View
gridView = (GridView) findViewById(R.id.gridview1);
adapter1 = new ArrayAdapter<String>(this, R.layout.simple_item, alphabets);
gridView.setAdapter(adapter1);
}
}
