Mad Lab File

8/10/2019 Mad Lab File

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APPLICATION 1

Q. Create mobile application to display HELLO WORLD

Source Code:

MainActivity.java

package com.example.sample;

import android.support.v7.app.ActionBarActivity;import android.widget.TextView;import android.os.Bundle;

public class MainActivity extends ActionBarActivity {

TextView t1;@Overrideprotected void onCreate(Bundle savedInstanceState) {

super .onCreate(savedInstanceState);setContentView(R.layout. activity_main );t1 = (TextView) findViewById(R.id. textView1 );

}

}

Activity_main.xml

OUTPUT:


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MainActivity.java


import android.support.v7.app.ActionBarActivity;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.EditText;import android.widget.TextView;import android.os.Bundle;


TextView t1;EditText e1;Button b1;

@Overrideprotected void onCreate(Bundle savedInstanceState) {

super .onCreate(savedInstanceState);setContentView(R.layout. activity_main );

t1 = (TextView) findViewById(R.id. textView1 );e1 = (EditText) findViewById(R.id. editText1 );b1 = (Button) findViewById(R.id. button1 );

b1.setOnClickListener( new OnClickListener() {

@Overridepublic void onClick(View v) {

t1.setText(e1.getText().toString());

}});

}}

Activity_main.xml


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OUTPUT:


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APPLICATION 3

Q. Create mobile application to show life cycle methods in Log Cat Window


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Source Code:

MainActivity.java


import android.app.Activity;

import android.os.Bundle;

import android.util.Log;

public class Activity101Activity extends Activity {

String tag = Lifecycle;

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.main);

Log .d (tag, In the onCreate() event);

}

public void onStart()

{

super.onStart();

Log .d (tag, In the onStart() event);

}

public void onRestart()

{

super.onRestart();

Log .d (tag, In the onRestart() event);

}

public void onResume()

{

super.onResume();

Log .d (tag, In the onResume() event);

}


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public void onPause()

{

super.onPause();

Log .d (tag, In the onPause() event);

}

public void onStop()

{

super.onStop();

Log .d (tag, In the onStop() event);

}

public void onDestroy()

{

super.onDestroy();

Log .d (tag, In the onDestroy() event);

}

}

APPLICATION 4

Q. Create mobile application to read data and display it on second activity usingintents


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Intent i = new Intent(MainActivity. this ,SecondActivity. class );

i.putExtra("as", e1.getText().toString());startActivity(i);

}});}

} Activity_main.xml

Activity_second_activity.xml


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android:layout_width= "match_parent" android:layout_height= "match_parent" android:orientation= "vertical" >

APPLICATION 5

Q. Create mobile application to convert the degree given in Celsius intoFahrenheit.

Source Code:

MainActivity.java


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import android.support.v7.app.ActionBarActivity;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;

import android.widget.EditText;import android.widget.TextView;import android.os.Bundle;


EditText e1;Button b1;TextView t1;

@Overrideprotected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);e1 = (EditText) findViewById(R.id.editText1);t1 = (TextView) findViewById(R.id.textView1);b1 = (Button) findViewById(R.id.button1);

b1.setOnClickListener(new OnClickListener() {


double temp = Double.parseDouble(e1.getText().toString());temp = (temp * 9)/ 5 + 32;t1.setText(String.valueOf(temp) + " Farenheit");

}});

}}

Activity_main.xml


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android:layout_marginLeft= "@dimen/activity_horizontal_margin" android:layout_marginRight= "@dimen/activity_horizontal_margin" android:layout_marginTop= "@dimen/activity_vertical_margin" android:orientation= "vertical" >

OUTPUT:


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APPLICATION 6

Q. Create mobile application to create a Login Page which reads username and password and after validation display appropriate message on the screen.

MainActivity.java

package com . example .sample;


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import android . app . Activity ; import android . graphics . Color ; import android . os . Bundle ; import android . view . Menu ; import android . view . View ; import android . widget . Button ; import android . widget . EditText ; import android . widget . TextView ; import android . widget . Toast ;

public class MainActivity extends Activity {

private EditText username =null ; private EditText password =null ; private TextView attempts ; private Button login ; int counter = 3 ; @Override protected void onCreate ( Bundle savedInstanceState ) {

super . onCreate ( savedInstanceState ); setContentView ( R. layout . activity_main ); username = ( EditText ) findViewById ( R. id . editText1 ); password = ( EditText ) findViewById ( R. id . editText2 ); attempts = ( TextView ) findViewById ( R. id . textView5 ); attempts . setText ( Integer . toString ( counter )); login = ( Button ) findViewById ( R. id . button1 );

}

public void login ( View view ){ if ( username . getText (). toString (). equals ( "admin" ) && password . getText (). toString (). equals ( "admin" )){ Toast . makeText ( getApplicationContext (), "Redirecting..." , Toast . LENGTH_SHORT). show ();

} else {

Toast . makeText ( getApplicationContext (), "Wrong Credentials" , Toast . LENGTH_SHORT). show (); attempts . setBackgroundColor ( Color . RED); counter --; attempts . setText ( Integer . toString ( counter )); if ( counter ==0){

login . setEnabled ( false ); }

}

} @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 ;

}

}

Activity_main.xml


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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" >


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android:layout_height ="wrap_content" android:layout_below ="@+id/editText2" android:layout_centerHorizontal ="true" android:layout_marginTop ="94dp" android:onClick ="login" android:text ="@string/Login" />

OUTPUT:


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APPLICATION 7

Q. Create mobile application to display analog and digital clock.


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android:orientation ="vertical" >

OUTPUT:


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APPLICATION 8

Q. Create mobile application to display options menu and context menu.

MainActivity.javaPackage com.example.sample

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


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import android.view.ContextMenu;import android.view.ContextMenu.ContextMenuInfo;import android.view.Menu;import android.view.MenuItem;import android.view.View;import android.widget.Button;import android.widget.Toast;

public class MainActivity extends Activity {

@Override public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);

Button btn = (Button) findViewById(R.id.button1);btn.setOnCreateContextMenuListener(this);

}

// android Options Menu @Override

public boolean onCreateOptionsMenu(Menu menu) {getMenuInflater().inflate(R.menu.activity_menu, menu);return true;

}

public void onGroupItemClick (MenuItem item) {if (item.isChecked()) {

item.setChecked(false);} else {

item.setChecked(true);}

}

@Override public boolean onOptionsItemSelected(MenuItem item){

Toast.makeText(this, item.getTitle(), Toast.LENGTH_LONG).show();return true;

}

//android Context Menu--- @Override

public void onCreateContextMenu(ContextMenu menu, View view,ContextMenuInfo menuInfo){

getMenuInflater().inflate(R.menu.activity_menu, menu);}

@Override


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public boolean onContextItemSelected(MenuItem item){

Toast.makeText(this, item.getTitle(), Toast.LENGTH_LONG).show();return true;

}}

Activity_main.xml

Activity_menu.xml


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android:orderInCategory="100"android:showAsAction="always"android:title="Item 1"/>


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OUTPUT:

APPLICATION 9

Q. Create mobile application to which contains email compose activity to sendemails

MainActivity.java

package com.example.sample ;

import android.app.Activity ;

import android.content.Intent ;


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Intent email = new Intent ( Intent. ACTION_SEND) ;

email. putExtra ( Intent. EXTRA_EMAIL, new String []{ to }) ;

//email.putExtra(Intent.EXTRA_CC, new String[]{ to});

//email.putExtra(Intent.EXTRA_BCC, new String[]{to});

email. putExtra ( Intent. EXTRA_SUBJECT, subject ) ;

email. putExtra ( Intent. EXTRA_TEXT, message ) ;

//need this to prompts email client only

email. setType ( "message/rfc822" ) ;

startActivity ( Intent. createChooser ( email, "Choose an Email client :" )) ;

}

}) ;

}

}

Activity_main.xml


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android:id ="@+id/textViewPhoneNo"

android:layout_width ="wrap_content"

android:layout_height ="wrap_content"

android:text ="To : "

android:textAppearance ="?android:attr/textAppearanceLarge" />


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APPLICATION 10

Q. Create mobile application to store data on internal storage using files

MainActivity.java

package com . example . sample ;

import java . io . FileInputStream ; import java . io . FileOutputStream ; import java . io . InputStreamReader ;

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


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Mad Lab File