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Design an App to create either a menu list, list-view or grid-view layout with t

ID: 3593364 • Letter: D

Question

Design an App to create either a menu list, list-view or grid-view layout with the names of 3 simple sample apps that you can jump to and execute and return to main -- the 3 can be new items or already running ones.  The program code below is for 4 programs, only 3 are needed for the menu list. Android Studios is the medium through which this is tested.

package com.example.alertdialog;

import android.os.Bundle;
import android.app.Activity;
import android.app.AlertDialog;
import android.view.Menu;
import android.view.View;
import android.widget.Button;

public class MainActivity extends Activity {

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button but = (Button) findViewById(R.id.button);
but.setOnClickListener(new View.OnClickListener() {

@Override
public void onClick(View v) {
// TODO Auto-generated method stub
// Create an alert dialog box
AlertDialog.Builder builder = new AlertDialog.Builder(
MainActivity.this);

// Set alert title
builder.setTitle(R.string.alerttitle);

// Set the value for the positive reaction from the user
// You can also set a listener to call when it is pressed
builder.setPositiveButton(R.string.ok, null);

// The message
builder.setMessage(R.string.message);

// Create the alert dialog and display it
AlertDialog theAlertDialog = builder.create();
theAlertDialog.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.main, menu);
return true;
}

}

live project can be done based on below codes :

import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;

public class MainActivity extends Activity {

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
super.onCreateOptionsMenu(menu);
getMenuInflater().inflate(R.menu.main, menu);
return true;
}

}

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" >

android:layout_width="match_parent"
android:layout_height="40dp"
android:text="A Menu Activity"
android:textSize="30dp"
android:layout_marginTop="120dp"
android:gravity="center_vertical|center_horizontal" />



android:id="@+id/Menu_label1"
android:alphabeticShortcut="1"
android:title="Menu_label"/>
android:id="@+id/Menu_label2"
android:alphabeticShortcut="2"
android:title="Menu_label2"/>


_____________________________________________________________________________________
Java Android Program to Create Multiple Activities within an Application

This Android Java Program demonstrates to Create Multiple Activities within an Application using Intent and Thread.
Here is source code of the Program to create Multiple Activities within an Application using Intent and a Thread.
The project is successfully compiled and run on a Windows system using Eclipse ide.
The program output is also shown below.

The Second Activity is called by the First Activity using startActivity() method which takes
as input an intent object this intent object should be pointing towards the Second Activity
in order to do that we create a new Intent object using intent class and within it specifying
the Action name of the Second Activity which is set in the AndroidManifest.xml file.

// Activity One



package com.example.creatingmultipleactivities;

import android.os.Bundle;
import android.app.Activity;
import android.content.Intent;
import android.view.Menu;

public class MainActivity extends Activity {

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Thread th = new Thread() {

public void run() {
try {
sleep(2000);
startActivity(new Intent(
"com.example.creatingmultipleactivities.second_activity"));
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}

finally {
finish();
}
}
};
th.start();
}

@Override
protected void onPause() {
// TODO Auto-generated method stub
super.onPause();

}

@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;
}

}

// Second Activity


package com.example.creatingmultipleactivities;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;

public class second_activity extends Activity{

@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.second);

}
@Override
protected void onPause() {
// TODO Auto-generated method stub
super.onPause();

}
}

// Xml

First Activity Xml

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"
android:background="@drawable/background">

android:id="@+id/textView1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_marginTop="39dp"
android:gravity="center_horizontal"
android:text="This is the first Activity"
android:textAppearance="?android:attr/textAppearanceLarge"
android:textSize="50sp" />

Second Activity Xml



android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:background="@drawable/background">

android:id="@+id/textView1"
android:layout_width="match_parent"
android:layout_height="252dp"
android:text="This is Second Activity"
android:paddingTop="80dp"
android:gravity="center"
android:textAppearance="?android:attr/textAppearanceLarge"
android:textSize="40sp" />

AndroidManifest


package="com.example.creatingmultipleactivities"
android:versionCode="1"
android:versionName="1.0" >

android:minSdkVersion="8"
android:targetSdkVersion="17" />

android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
android:name="com.example.creatingmultipleactivities.MainActivity"
android:label="@string/app_name" >






android:name="com.example.creatingmultipleactivities.second_activity"
android:label="@string/app_name" >









_____________________________________________________________________________________
Java Android Program to Demonstrate Alert Dialog Box

Here is source code of the Program to Demonstrate Alert Dialog Box in Android. The program is successfully compiled and run on a Windows system using Eclipse Ide. The program output is also shown below.
Main Activity

package com.example.alertdialog;

import android.os.Bundle;
import android.app.Activity;
import android.app.AlertDialog;
import android.view.Menu;
import android.view.View;
import android.widget.Button;

public class MainActivity extends Activity {

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button but = (Button) findViewById(R.id.button);
but.setOnClickListener(new View.OnClickListener() {

@Override
public void onClick(View v) {
// TODO Auto-generated method stub
// Create an alert dialog box
AlertDialog.Builder builder = new AlertDialog.Builder(
MainActivity.this);

// Set alert title
builder.setTitle(R.string.alerttitle);

// Set the value for the positive reaction from the user
// You can also set a listener to call when it is pressed
builder.setPositiveButton(R.string.ok, null);

// The message
builder.setMessage(R.string.message);

// Create the alert dialog and display it
AlertDialog theAlertDialog = builder.create();
theAlertDialog.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.main, menu);
return true;
}

}
ActivityMain.xml


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" >

android:id="@+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentRight="true"
android:layout_centerVertical="true"
android:text="SHOW DIALOG" />


_____________________________________________________________________________________
Java Android Program to Demonstrate Alert Dialog Box

Here is source code of the Program to Demonstrate Alert Dialog Box in Android. The program is successfully compiled and run on a Windows system using Eclipse Ide. The program output is also shown below.
Main Activity

package com.example.alertdialog;

import android.os.Bundle;
import android.app.Activity;
import android.app.AlertDialog;
import android.view.Menu;
import android.view.View;
import android.widget.Button;

public class MainActivity extends Activity {

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button but = (Button) findViewById(R.id.button);
but.setOnClickListener(new View.OnClickListener() {

@Override
public void onClick(View v) {
// TODO Auto-generated method stub
// Create an alert dialog box
AlertDialog.Builder builder = new AlertDialog.Builder(
MainActivity.this);

// Set alert title
builder.setTitle(R.string.alerttitle);

// Set the value for the positive reaction from the user
// You can also set a listener to call when it is pressed
builder.setPositiveButton(R.string.ok, null);

// The message
builder.setMessage(R.string.message);

// Create the alert dialog and display it
AlertDialog theAlertDialog = builder.create();
theAlertDialog.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.main, menu);
return true;
}

}
ActivityMain.xml


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" >

android:id="@+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentRight="true"
android:layout_centerVertical="true"
android:text="SHOW DIALOG" />

Explanation / Answer

package com.example.alertdialog;

import android.os.Bundle;
import android.app.Activity;
import android.app.AlertDialog;
import android.view.Menu;
import android.view.View;
import android.widget.Button;

public class MainActivity extends Activity {

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button but = (Button) findViewById(R.id.button);
but.setOnClickListener(new View.OnClickListener() {

@Override
public void onClick(View v) {
// TODO Auto-generated method stub
// Create an alert dialog box
AlertDialog.Builder builder = new AlertDialog.Builder(
MainActivity.this);

// Set alert title
builder.setTitle(R.string.alerttitle);

// Set the value for the positive reaction from the user
// You can also set a listener to call when it is pressed
builder.setPositiveButton(R.string.ok, null);

// The message
builder.setMessage(R.string.message);

// Create the alert dialog and display it
AlertDialog theAlertDialog = builder.create();
theAlertDialog.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.main, menu);
return true;
}

}

live project can be done based on below codes :

import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;

public class MainActivity extends Activity {

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
super.onCreateOptionsMenu(menu);
getMenuInflater().inflate(R.menu.main, menu);
return true;
}

}

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