Thread demo : TabActivity « UI « Android

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Android » UI » TabActivity 




Thread demo
  

/*
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.os.SystemClock;
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.view.Window;
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;
  int progress=0;
  
  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    requestWindowFeature(Window.FEATURE_PROGRESS);
    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);
    }
    else if (item.getItemId()==R.id.run) {
      setProgressBarVisibility(true);
      progress=0;
      new Thread(longTask).start();      
      
      return(true);
    }
    
    return(super.onOptionsItemSelected(item));
  }
  
  private void doSomeLongWork(final int incr) {
    runOnUiThread(new Runnable() {
      public void run() {
        progress+=incr;
        setProgress(progress);
      }
    });
    
    SystemClock.sleep(250);  // should be something more useful!
  }
  
  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);
    }
  };
  
  private Runnable longTask=new Runnable() {
    public void run() {
      for (int i=0;i<20;i++) {
        doSomeLongWork(500);
      }
      
      runOnUiThread(new Runnable() {
        public void run() {
          setProgressBarVisibility(false);
        }
      });
    }
  };
  
  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"
  />
  <item android:id="@+id/run"
    android:title="Run Long Task"
    android:icon="@drawable/run"
  />
</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>

   
    
  














Related examples in the same category
1.Using TabActivity
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