Menu and messages : Menu « UI « Android






Menu and messages

  


/*
Welcome to the source code for Android Programming Tutorials (http://commonsware.com/AndTutorials)!

Specifically, this is for Version 3.2 and above of this book.
For the source code for older versions of this book, please
visit:

https://github.com/commonsguy/cw-andtutorials

All of the source code in this archive is licensed under the
Apache 2.0 license except as noted.

The names of the top-level directories roughly correspond to a
shortened form of the chapter titles. Since chapter numbers
change with every release, and since some samples are used by
multiple chapters, I am loathe to put chapter numbers in the
actual directory names.

If you wish to use this code, bear in mind a few things:

* The projects are set up to be built by Ant, not by Eclipse.
  If you wish to use the code with Eclipse, you will need to
  create a suitable Android Eclipse project and import the
  code and other assets.

* You should delete build.xml from the project, then run

    android update project -p ...
  (where ... is the path to a project of interest)

  on those projects you wish to use, so the build files are
  updated for your Android SDK version.

*/


package apt.tutorial;

import android.app.TabActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.view.LayoutInflater;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.RadioGroup;
import android.widget.TabHost;
import android.widget.TextView;
import android.widget.Toast;
import java.util.ArrayList;
import java.util.List;

public class LunchList extends TabActivity {
  List<Restaurant> model=new ArrayList<Restaurant>();
  RestaurantAdapter adapter=null;
  EditText name=null;
  EditText address=null;
  EditText notes=null;
  RadioGroup types=null;
  Restaurant current=null;
  
  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    
    name=(EditText)findViewById(R.id.name);
    address=(EditText)findViewById(R.id.addr);
    notes=(EditText)findViewById(R.id.notes);
    types=(RadioGroup)findViewById(R.id.types);
    
    Button save=(Button)findViewById(R.id.save);
    
    save.setOnClickListener(onSave);
    
    ListView list=(ListView)findViewById(R.id.restaurants);
    
    adapter=new RestaurantAdapter();
    list.setAdapter(adapter);
    
    TabHost.TabSpec spec=getTabHost().newTabSpec("tag1");
    
    spec.setContent(R.id.restaurants);
    spec.setIndicator("List", getResources()
                                .getDrawable(R.drawable.list));
    getTabHost().addTab(spec);
    
    spec=getTabHost().newTabSpec("tag2");
    spec.setContent(R.id.details);
    spec.setIndicator("Details", getResources()
                                  .getDrawable(R.drawable.restaurant));
    getTabHost().addTab(spec);
    
    getTabHost().setCurrentTab(0);
    
    list.setOnItemClickListener(onListClick);
  }
  
  @Override
  public boolean onCreateOptionsMenu(Menu menu) {
    new MenuInflater(this).inflate(R.menu.option, menu);

    return(super.onCreateOptionsMenu(menu));
  }

  @Override
  public boolean onOptionsItemSelected(MenuItem item) {
    if (item.getItemId()==R.id.toast) {
      String message="No restaurant selected";
      
      if (current!=null) {
        message=current.getNotes();
      }
      
      Toast.makeText(this, message, Toast.LENGTH_LONG).show();
      
      return(true);
    }
    
    return(super.onOptionsItemSelected(item));
  }
  
  private View.OnClickListener onSave=new View.OnClickListener() {
    public void onClick(View v) {
      current=new Restaurant();
      current.setName(name.getText().toString());
      current.setAddress(address.getText().toString());
      current.setNotes(notes.getText().toString());
      
      switch (types.getCheckedRadioButtonId()) {
        case R.id.sit_down:
          current.setType("sit_down");
          break;
          
        case R.id.take_out:
          current.setType("take_out");
          break;
          
        case R.id.delivery:
          current.setType("delivery");
          break;
      }
      
      adapter.add(current);
    }
  };
  
  private AdapterView.OnItemClickListener onListClick=new AdapterView.OnItemClickListener() {
    public void onItemClick(AdapterView<?> parent,
                             View view, int position,
                             long id) {
      current=model.get(position);
      
      name.setText(current.getName());
      address.setText(current.getAddress());
      notes.setText(current.getNotes());
      
      if (current.getType().equals("sit_down")) {
        types.check(R.id.sit_down);
      }
      else if (current.getType().equals("take_out")) {
        types.check(R.id.take_out);
      }
      else {
        types.check(R.id.delivery);
      }
      
      getTabHost().setCurrentTab(1);
    }
  };
  
  class RestaurantAdapter extends ArrayAdapter<Restaurant> {
    RestaurantAdapter() {
      super(LunchList.this, R.layout.row, model);
    }
    
    public View getView(int position, View convertView,
                        ViewGroup parent) {
      View row=convertView;
      RestaurantHolder holder=null;
      
      if (row==null) {                          
        LayoutInflater inflater=getLayoutInflater();
        
        row=inflater.inflate(R.layout.row, parent, false);
        holder=new RestaurantHolder(row);
        row.setTag(holder);
      }
      else {
        holder=(RestaurantHolder)row.getTag();
      }
      
      holder.populateFrom(model.get(position));
      
      return(row);
    }
  }
  
  static class RestaurantHolder {
    private TextView name=null;
    private TextView address=null;
    private ImageView icon=null;
    
    RestaurantHolder(View row) {
      name=(TextView)row.findViewById(R.id.title);
      address=(TextView)row.findViewById(R.id.address);
      icon=(ImageView)row.findViewById(R.id.icon);
    }
    
    void populateFrom(Restaurant r) {
      name.setText(r.getName());
      address.setText(r.getAddress());
  
      if (r.getType().equals("sit_down")) {
        icon.setImageResource(R.drawable.ball_red);
      }
      else if (r.getType().equals("take_out")) {
        icon.setImageResource(R.drawable.ball_yellow);
      }
      else {
        icon.setImageResource(R.drawable.ball_green);
      }
    }
  }
}


package apt.tutorial;

public class Restaurant {
  private String name="";
  private String address="";
  private String type="";
  private String notes="";
  
  public String getName() {
    return(name);
  }
  
  public void setName(String name) {
    this.name=name;
  }
  
  public String getAddress() {
    return(address);
  }
  
  public void setAddress(String address) {
    this.address=address;
  }
  
  public String getType() {
    return(type);
  }
  
  public void setType(String type) {
    this.type=type;
  }
  
  public String getNotes() {
    return(notes);
  }
  
  public void setNotes(String notes) {
    this.notes=notes;
  }
  
  public String toString() {
    return(getName());
  }
}

//strings.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <string name="app_name">LunchList</string>
</resources>


//option.xml

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">
  <item android:id="@+id/toast"
    android:title="Raise Toast"
    android:icon="@drawable/toast"
  />
</menu>

//main.xml

<?xml version="1.0" encoding="utf-8"?>
<TabHost xmlns:android="http://schemas.android.com/apk/res/android"
  android:id="@android:id/tabhost"
  android:layout_width="fill_parent"
  android:layout_height="fill_parent">
  <LinearLayout
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent">
    <TabWidget android:id="@android:id/tabs"
      android:layout_width="fill_parent"
      android:layout_height="wrap_content"
    />
    <FrameLayout android:id="@android:id/tabcontent"
      android:layout_width="fill_parent"
      android:layout_height="fill_parent"
    >
      <ListView android:id="@+id/restaurants"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
      />
      <TableLayout android:id="@+id/details"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:stretchColumns="1"
        android:paddingTop="4dip"
        >
        <TableRow>
          <TextView android:text="Name:" />
          <EditText android:id="@+id/name" />
        </TableRow>
        <TableRow>
          <TextView android:text="Address:" />
          <EditText android:id="@+id/addr" />
        </TableRow>
        <TableRow>
          <TextView android:text="Type:" />
          <RadioGroup android:id="@+id/types">
            <RadioButton android:id="@+id/take_out"
              android:text="Take-Out"
            />
            <RadioButton android:id="@+id/sit_down"
              android:text="Sit-Down"
            />
            <RadioButton android:id="@+id/delivery"
              android:text="Delivery"
            />
          </RadioGroup>
        </TableRow>
        <TableRow>
          <TextView android:text="Notes:" />
          <EditText android:id="@+id/notes"
            android:singleLine="false"
            android:gravity="top"
            android:lines="2"
            android:scrollHorizontally="false"
            android:maxLines="2"
            android:maxWidth="200sp"
          />
        </TableRow>
        <Button android:id="@+id/save"
          android:layout_width="fill_parent"
          android:layout_height="wrap_content"
          android:text="Save"
        />
      </TableLayout>
    </FrameLayout>
  </LinearLayout>
</TabHost>

//row.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
  android:layout_width="fill_parent"
  android:layout_height="wrap_content"
  android:orientation="horizontal"
  android:padding="4dip"
  >
  <ImageView android:id="@+id/icon"
    android:layout_width="wrap_content"
    android:layout_height="fill_parent"
    android:layout_alignParentTop="true"
    android:layout_alignParentBottom="true"
    android:layout_marginRight="4dip"
  />
  <LinearLayout
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical"
    >  
    <TextView android:id="@+id/title"
      android:layout_width="fill_parent"
      android:layout_height="wrap_content"
      android:layout_weight="1"
      android:gravity="center_vertical"
      android:textStyle="bold"
      android:singleLine="true"
      android:ellipsize="end"
    />
    <TextView android:id="@+id/address"
      android:layout_width="fill_parent"
      android:layout_height="wrap_content"
      android:layout_weight="1"
      android:gravity="center_vertical"
      android:singleLine="true"
      android:ellipsize="end"
    />
  </LinearLayout>
</LinearLayout>

   
    
  








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2.Context menu
3.Custom menu
4.Using Icon in Menu
5.Option Menu selection event
6.Menu Inflation
7.Context Menu event
8.Create Menu within your code
9.Activity Menu
10.Define menu in xml file
11.Adding submenu
12.Using Icon in menu and submenu
13.Get Menu title
14.onOptionsItemSelected/onPrepareOptionsMenu/onCreateOptionsMenu Event
15.Basics of the Action Bar and how it interoperates with the standard options menu.
16.Demonstration of displaying a context menu from a fragment.
17.Demonstrates how fragments can participate in the options menu.
18.Demonstrates inflating menus from XML.
19.Usage of SearchView in an ActionBar as a menu item.
20.This demo illustrates the use of CHOICE_MODE_MULTIPLE_MODAL