Android Programs Day 5

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1 Android Programs Day 5 //Android Program to demonstrate the working of Options Menu. 1. Create a New Project. 2. Write the necessary codes in the MainActivity.java to create OptionMenu. 3. Add the oncreateoptionsmenu() in mainactivity.java after oncreate(). public boolean oncreateoptionsmenu(menu menu) super.oncreateoptionsmenu(menu); CreateMenu(menu); return super.oncreateoptionsmenu(menu); 4. Add oncreatemenu(menu) user-defined function. menu.add(0, 0, 0, "Item 1"): Arguements: 1: Group ID 2: Item ID 3: Order ID 4: Item Names private void CreateMenu(Menu menu) MenuItem mnu1 = menu.add(0, 0, 0, "Item 1"); MenuItem mnu2 = menu.add(0, 1, 1, "Item 2"); 5. Add onoptionsitemselected(menuitem). Any operation on items, will call this function and handle the events. public boolean onoptionsitemselected(menuitem item) return MenuChoice(item); 6. Add on MenuChoice(MenuItem) user-defined function. private boolean MenuChoice(MenuItem item)

2 switch (item.getitemid()) case 0: //Code Goes Here case 1: //Code Goes Here return false; 7. Run the code and test the working of OptionMenu. //MainActivity.java: import android.content.intent; import android.net.uri; import android.support.v7.app.appcompatactivity; import android.os.bundle; import android.view.menu; import android.view.menuitem; import android.view.view; import android.widget.toast; public class MainActivity extends AppCompatActivity protected void oncreate(bundle savedinstancestate) super.oncreate(savedinstancestate); setcontentview(r.layout.activity_main); public boolean oncreateoptionsmenu(menu menu) super.oncreateoptionsmenu(menu); createmenu(menu); return super.oncreateoptionsmenu(menu); private void createmenu(menu menu) MenuItem menu1 = menu.add(0, 0, 0, "View A Contact"); MenuItem menu2 = menu.add(0, 1, 1, "Edit A Contact"); MenuItem menu3 = menu.add(0, 2, 2, "Dial A Contact"); MenuItem menu4 = menu.add(0, 3, 3, "View All");

3 public boolean onoptionsitemselected(menuitem item) return menuchoice(item); private boolean menuchoice(menuitem item) switch(item.getitemid()) case 0: Intent obj = new Intent(Intent.ACTION_VIEW); obj.setdata(uri.parse("content://contacts/people/1")); startactivity(obj); case 1: Intent obj1 = new Intent(Intent.ACTION_EDIT); obj1.setdata(uri.parse("content://contacts/people/1")); startactivity(obj1); case 2: Intent obj2 = new Intent(Intent.ACTION_DIAL); obj2.setdata(uri.parse("tel: ")); startactivity(obj2); case 3: Intent obj3 = new Intent(Intent.ACTION_VIEW); obj3.setdata(uri.parse("content://contacts/people/")); startactivity(obj3); //activity_main.xml: <?xml version="1.0" encoding="utf-8"?> <android.support.constraint.constraintlayout xmlns:android=" xmlns:app=" xmlns:tools=" android:layout_width="match_parent" android:layout_height="match_parent" tools:context="com.example.ibmsap.test_optionmenu.mainactivity"> <TextView android:id="@+id/textview" android:layout_width="wrap_content" android:layout_height="wrap_content"

4 android:text="hello World" " tools:layout_constraintleft_creator="1" tools:layout_constrainttop_creator="1" app:layout_constraintleft_toleftof="parent" app:layout_constraintright_torightof="parent" tools:layout_constraintright_creator="1" android:layout_margintop="117dp" app:layout_constrainttop_totopof="parent" /> </android.support.constraint.constraintlayout>

5 //Android Program to demonstrate the working of Context Menu. 1. Create a New Project. 2. Add a Button in the UI. Write the necessary codes in the MainActivity.java to create ContextnMenu. 3. Add a Listener to the Button by writing the following code. Button btn = (Button)findViewById(R.id.button); btn.setoncreatecontextmenulistener(this); 4. Add the oncreatecontextmenu() in mainactivity.java after oncreate(). public void oncreatecontextmenu(contextmenu menu, View v,contextmenu.contextmenuinfo menuinfo) super.oncreatecontextmenu(menu, v, menuinfo); CreateMenu(menu); 5. Add on CreateMenu(menu) user-defined function. menu.add(0, 0, 0, "Item 1"): Arguements: 1: Group ID 2: Item ID 3: Order ID 4: Item Names private void CreateMenu(Menu menu) MenuItem mnu1 = menu.add(0, 0, 0, "Item 1"); MenuItem mnu2 = menu.add(0, 1, 1, "Item 2"); 6. Add oncontextitemselected(menuitem). Any operation on items, will call this function and handle the events. public boolean oncontextitemselected(menuitem item) return MenuChoice(item); 7. Add on MenuChoice(MenuItem) user-defined function.

6 private boolean MenuChoice(MenuItem item) switch (item.getitemid()) case 0: //Code Goes Here case 1: //Code Goes Here return false; 7. Run the code and test the working of ContextMenu. //MainActivity.java: import android.content.intent; import android.net.uri; import android.support.v7.app.appcompatactivity; import android.os.bundle; import android.view.contextmenu; import android.view.menu; import android.view.menuitem; import android.view.view; import android.widget.button; import android.widget.toast; public class MainActivity extends AppCompatActivity Button btn; protected void oncreate(bundle savedinstancestate) super.oncreate(savedinstancestate); setcontentview(r.layout.activity_main); btn = (Button)findViewById(R.id.button); btn.setoncreatecontextmenulistener(this); public void oncreatecontextmenu(contextmenu menu, View v, ContextMenu.ContextMenuInfo menuinfo) super.oncreatecontextmenu(menu, v, menuinfo); createmenu(menu);

7 private void createmenu(menu menu) MenuItem menu1 = menu.add(0, 0, 0, "View A Contact"); MenuItem menu2 = menu.add(0, 1, 1, "Edit A Contact"); MenuItem menu3 = menu.add(0, 2, 2, "Dial A Contact"); MenuItem menu4 = menu.add(0, 3, 3, "View All"); public boolean oncontextitemselected(menuitem item) return menuchoice(item); private boolean menuchoice(menuitem item) switch(item.getitemid()) case 0: Intent obj = new Intent(Intent.ACTION_VIEW); obj.setdata(uri.parse("content://contacts/people/1")); startactivity(obj); case 1: Intent obj1 = new Intent(Intent.ACTION_EDIT); obj1.setdata(uri.parse("content://contacts/people/1")); startactivity(obj1); case 2: Intent obj2 = new Intent(Intent.ACTION_DIAL); obj2.setdata(uri.parse("tel: ")); startactivity(obj2); case 3: Intent obj3 = new Intent(Intent.ACTION_VIEW); obj3.setdata(uri.parse("content://contacts/people/")); startactivity(obj3); //activity_main.xml: <?xml version="1.0" encoding="utf-8"?> <android.support.constraint.constraintlayout xmlns:android=" xmlns:app=" xmlns:tools="

8 android:layout_width="match_parent" android:layout_height="match_parent" tools:context="com.example.ibmsap.test_optionmenu.mainactivity"> <Button android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="context Menu" tools:layout_constrainttop_creator="1" tools:layout_constraintright_creator="1" tools:layout_constraintbottom_creator="1" app:layout_constraintbottom_tobottomof="parent" app:layout_constraintright_torightof="parent" tools:layout_constraintleft_creator="1" app:layout_constraintleft_toleftof="parent" app:layout_constrainttop_totopof="parent" app:layout_constrainthorizontal_bias="0.417" app:layout_constraintvertical_bias="0.498" /> </android.support.constraint.constraintlayout>

9 //Android Program to demonstrate the Menu Creation using XML File. 1. Create a new project. 2. Create a Directory "menu" in /res folder. 3. Create a Menu resource file in /res/menu folder and name it as menu.xml 4. Add few <item> as buttons. //menu.xml: <?xml version="1.0" encoding="utf-8"?> <menu xmlns:android=" <item android:id="@+id/menu1" android:title="menu 1" /> <item android:id="@+id/menu2" android:title="menu 2" /> <item android:id="@+id/menu3" android:title="menu 3" /> </menu> 5. Add oncreateoptionsmenu(menu) and use MenuInflater object to populate the menu isng menu.xml file. public boolean oncreateoptionsmenu(menu menu) MenuInflater menuinflater = getmenuinflater(); menuinflater.inflate(r.menu.menu, menu); return super.oncreateoptionsmenu(menu);

10 6. Add onoptionsitemselected(menuitem). Any operation on items, will call this function and handle the events. public boolean onoptionsitemselected(menuitem item) return MenuChoice(item); //MainActivity.java: import android.content.intent; import android.net.uri; import android.support.v7.app.appcompatactivity; import android.os.bundle; import android.view.menu; import android.view.menuinflater; import android.view.menuitem; public class MainActivity extends AppCompatActivity protected void oncreate(bundle savedinstancestate) super.oncreate(savedinstancestate); setcontentview(r.layout.activity_main); public boolean oncreateoptionsmenu(menu menu) MenuInflater obj = getmenuinflater(); obj.inflate(r.menu.menu, menu); return super.oncreateoptionsmenu(menu); public boolean onoptionsitemselected(menuitem item) return menuchoice(item); private boolean menuchoice(menuitem item) switch(item.getitemid()) case R.id.Menu1: Intent obj = new Intent(Intent.ACTION_VIEW); obj.setdata(uri.parse("content://contacts/people/1")); startactivity(obj);

11 case R.id.Menu2: Intent obj1 = new Intent(Intent.ACTION_EDIT); obj1.setdata(uri.parse("content://contacts/people/1")); startactivity(obj1); case R.id.Menu3: Intent obj2 = new Intent(Intent.ACTION_DIAL); obj2.setdata(uri.parse("tel: ")); startactivity(obj2); case R.id.Menu4: Intent obj3 = new Intent(Intent.ACTION_VIEW); obj3.setdata(uri.parse("content://contacts/people/")); startactivity(obj3); //activity_main.xml: <?xml version="1.0" encoding="utf-8"?> <android.support.constraint.constraintlayout xmlns:android=" xmlns:app=" xmlns:tools=" android:layout_width="match_parent" android:layout_height="match_parent" tools:context="com.example.ibmsap.test_menuxml.mainactivity"> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="hello World!" app:layout_constraintbottom_tobottomof="parent" app:layout_constraintleft_toleftof="parent" app:layout_constraintright_torightof="parent" app:layout_constrainttop_totopof="parent" /> </android.support.constraint.constraintlayout> //menu.xml: <?xml version="1.0" encoding="utf-8"?> <menu xmlns:app="

12 xmlns:android=" <item android:title="view A Contact"/> <item android:id="@+id/menu2" android:title="edit A Contact"/> <item android:id="@+id/menu3" android:title="dial A Contact"/> <item android:id="@+id/menu4" android:title="view All Contacts"/> </menu>

13 //Android Program to demonstrate the Sub-Menu Creation using XML File. 1. Create a new project. 2. Create a Directory "menu" in /res folder. 3. Create a Menu resource file in /res/menu folder and name it as menu.xml 4. To add Sub menu follow these steps. i. Create an <item> tag in the menu.xml file. ii. Create a <menu> tag inside the <item> tag. This will act as Main menu 1. iii. Create few <item> tags in the <menu> tag. Give proper id and titles. These will act as Sub-menu 1. iv. Repeat the steps i to iv to create one more sub-menu. //menu.xml: <?xml version="1.0" encoding="utf-8"?> <menu xmlns:android=" <item android:id="@+id/mainmenu1" android:title="main Menu 1"> <menu android:title="sub Menu1"> <item android:id="@+id/menu1" android:title="view A Contact"/> <item android:id="@+id/menu2" android:title="edit A Contact"/> </menu> </item> </menu>

14 5. Add oncreateoptionsmenu(menu) and use MenuInflater object to populate the menu isng menu.xml file. public boolean oncreateoptionsmenu(menu menu) MenuInflater menuinflater = getmenuinflater(); menuinflater.inflate(r.menu.menu, menu); return super.oncreateoptionsmenu(menu); 6. Add onoptionsitemselected(menuitem). Any operation on items, will call this function and handle the events. public boolean onoptionsitemselected(menuitem item) return MenuChoice(item); //MainActivity.java: import android.content.intent; import android.net.uri; import android.support.v7.app.appcompatactivity; import android.os.bundle; import android.view.menu; import android.view.menuinflater; import android.view.menuitem; public class MainActivity extends AppCompatActivity protected void oncreate(bundle savedinstancestate) super.oncreate(savedinstancestate); setcontentview(r.layout.activity_main); public boolean oncreateoptionsmenu(menu menu) MenuInflater obj = getmenuinflater(); obj.inflate(r.menu.menu, menu); return super.oncreateoptionsmenu(menu); public boolean onoptionsitemselected(menuitem item) return menuchoice(item);

15 private boolean menuchoice(menuitem item) switch(item.getitemid()) case R.id.Menu1: Intent obj = new Intent(Intent.ACTION_VIEW); obj.setdata(uri.parse("content://contacts/people/1")); startactivity(obj); case R.id.Menu2: Intent obj1 = new Intent(Intent.ACTION_EDIT); obj1.setdata(uri.parse("content://contacts/people/1")); startactivity(obj1); case R.id.Menu3: Intent obj2 = new Intent(Intent.ACTION_DIAL); obj2.setdata(uri.parse("tel: ")); startactivity(obj2); case R.id.Menu4: Intent obj3 = new Intent(Intent.ACTION_VIEW); obj3.setdata(uri.parse("content://contacts/people/")); startactivity(obj3); //activity_main.xml: <?xml version="1.0" encoding="utf-8"?> <android.support.constraint.constraintlayout xmlns:android=" xmlns:app=" xmlns:tools=" android:layout_width="match_parent" android:layout_height="match_parent" tools:context="com.example.ibmsap.test_menuxml.mainactivity"> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="hello World!" app:layout_constraintbottom_tobottomof="parent" app:layout_constraintleft_toleftof="parent" app:layout_constraintright_torightof="parent" app:layout_constrainttop_totopof="parent" /> </android.support.constraint.constraintlayout>

//menu.xml: <?xml version="1.0" encoding="utf-8"?> <menu xmlns:app="http://schemas.android.

16 //menu.xml: <?xml version="1.0" encoding="utf-8"?> <menu xmlns:app=" xmlns:android=" <item android:title="main Menu 1"> <menu android:title="sub Menu1"> <item android:title="view A Contact"/> <item android:id="@+id/menu2" android:title="edit A Contact"/> </menu> </item> <item android:id="@+id/mainmenu2" android:title="main Menu 2"> <menu android:title="sub Menu2"> <item android:id="@+id/menu3" android:title="dial A Contact"/> <item android:id="@+id/menu4" android:title="view All Contacts"/> </menu> </item> </menu>

Android Apps Development for Mobile and Tablet Device (Level I) Lesson 4. Workshop

Android Apps Development for Mobile and Tablet Device (Level I) Lesson 4. Workshop Workshop 1. Create an Option Menu, and convert it into Action Bar (Page 1 8) Create an simple Option Menu Convert Option Menu into Action Bar Create Event Listener for Menu and Action Bar Add System Icon