Hiển thị contactList Buổi 2 Android - ListView

Chào các bạn !
Hôm nay mình sẽ hưỡng dẫn các bạn làm tiếp phần ContactList nhưng được thêm phần ảnh vào !
- Thứ nhất phần thiết kế Activity mình không nói qua nữa nhé coi như các bạn làm được nhé ! nếu phần này còn không hiểu thì comment để lại skype mình sẽ hướng dẫn qua skype nhé !

Bắt đâu các bạn tạo cho mình các file java và file Activity như sau nhé:

Kết quả sau khi chạy sẽ là như thế này nhé:

Ok @-@ !

Bắt đâu Code nhé :

Ở file MainActivity.java  mình code như sau: 

1. package com.example.contactlist;
   
   import android.app.Activity;
   import android.content.Intent;
   import android.os.Bundle;
   import android.support.v4.app.Fragment;
   import android.view.LayoutInflater;
   import android.view.Menu;
   import android.view.MenuItem;
   import android.view.View;
   import android.view.View.OnClickListener;
   import android.view.ViewGroup;
   import android.widget.Button;
   
   public class MainActivity extends Activity {
       private Button btn_Ok;
   
       private void init() {
           btn_Ok = (Button) findViewById(R.id.btnOk);
           btn_Ok.setOnClickListener(new OnClickListener() {
   
               @Override
               public void onClick(View v) {
                   Intent intent = new Intent(MainActivity.this, ContactList.class);
                   startActivity(intent);
               }
           });
       }
   
       @Override
       protected void onCreate(Bundle savedInstanceState) {
           super.onCreate(savedInstanceState);
           setContentView(R.layout.activity_main);
           init();
   
       }
   
       @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;
       }
   
       @Override
       public boolean onOptionsItemSelected(MenuItem item) {
           // Handle action bar item clicks here. The action bar will
           // automatically handle clicks on the Home/Up button, so long
           // as you specify a parent activity in AndroidManifest.xml.
           int id = item.getItemId();
           if (id == R.id.action_settings) {
               return true;
           }
           return super.onOptionsItemSelected(item);
       }
   
       /**
        * A placeholder fragment containing a simple view.
        */
       public static class PlaceholderFragment extends Fragment {
   
           public PlaceholderFragment() {
           }
   
           @Override
           public View onCreateView(LayoutInflater inflater, ViewGroup container,
                   Bundle savedInstanceState) {
               View rootView = inflater.inflate(R.layout.activity_main, container,
                       false);
               return rootView;
           }
       }
   
   }

Ở file activity_main.xml

1. <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
2.     xmlns:tools="http://schemas.android.com/tools"
3.     android:id="@+id/list"
4.     android:layout_width="match_parent"
5.     android:layout_height="match_parent"
6.     android:gravity="center"
7.     android:orientation="vertical"
8.     android:paddingBottom="@dimen/activity_vertical_margin"
9.     android:paddingLeft="@dimen/activity_horizontal_margin"
10.     android:paddingRight="@dimen/activity_horizontal_margin"
11.     android:paddingTop="@dimen/activity_vertical_margin"
12.     tools:context="com.example.contactlist.MainActivity$PlaceholderFragment" >
13.     <Button
14.         android:id="@+id/btnOk"
15.         android:layout_width="fill_parent"
16.         android:layout_height="wrap_content"
17.         android:text="OK" />
18. </LinearLayout>

File ContactList.java mình code là:

1. package com.example.contactlist;
   
   import common.CommonKeys;
   import android.app.Activity;
   import android.content.Intent;
   import android.os.Bundle;
   import android.support.v4.app.Fragment;
   import android.view.LayoutInflater;
   import android.view.Menu;
   import android.view.MenuItem;
   import android.view.View;
   import android.view.View.OnClickListener;
   import android.view.ViewGroup;
   import android.widget.BaseAdapter;
   import android.widget.ImageView;
   import android.widget.ListView;
   import android.widget.TextView;
   
   public class ContactList extends Activity {
       private ListView lst_Contact;
       private String [] dataName = {
               "Hai Lam it 1", " Blog Hai Lam it", "hailamit 2", "Blog Hai lam it 2", "Cuoc song tuoi dep",
               "Hai Lam it 1", " Blog Hai Lam it", "hailamit 2", "Blog Hai lam it 2", "Cuoc song tuoi dep",
               "Hai Lam it 1", " Blog Hai Lam it", "hailamit 2", "Blog Hai lam it 2", "Cuoc song tuoi dep",
               "Hai Lam it 1", " Blog Hai Lam it", "hailamit 2", "Blog Hai lam it 2", "Cuoc song tuoi dep",
               "Hai Lam it 1", " Blog Hai Lam it", "hailamit 2", "Blog Hai lam it 2", "Cuoc song tuoi dep",
               "Hai Lam it 1", " Blog Hai Lam it", "hailamit 2", "Blog Hai lam it 2", "Cuoc song tuoi dep",
               "Hai Lam it 1", " Blog Hai Lam it", "hailamit 2", "Blog Hai lam it 2", "Cuoc song tuoi dep",
               "Hai Lam it 1", " Blog Hai Lam it", "hailamit 2", "Blog Hai lam it 2", "Cuoc song tuoi dep",
              
       };
      
       private String [] dataNumber = {
               "0167.7575.999", " 0983.24.26.85", "0123456798", "09876543212", "0987654334",
               "0167.7575.999", " 0983.24.26.85", "0123456798", "09876543212", "0987654334",
               "0167.7575.999", " 0983.24.26.85", "0123456798", "09876543212", "0987654334",
               "0167.7575.999", " 0983.24.26.85", "0123456798", "09876543212", "0987654334",
               "0167.7575.999", " 0983.24.26.85", "0123456798", "09876543212", "0987654334",
               "0167.7575.999", " 0983.24.26.85", "0123456798", "09876543212", "0987654334",
               "0167.7575.999", " 0983.24.26.85", "0123456798", "09876543212", "0987654334",
               "0167.7575.999", " 0983.24.26.85", "0123456798", "09876543212", "0987654334",
       };
       private int [] dataPhoto = {
               R.drawable.anh1, R.drawable.anh2, R.drawable.anh3 , R.drawable.anh4, R.drawable.anh5,
               R.drawable.anh1, R.drawable.anh2, R.drawable.anh3 , R.drawable.anh4, R.drawable.anh5,
               R.drawable.anh1, R.drawable.anh2, R.drawable.anh3 , R.drawable.anh4, R.drawable.anh5,
               R.drawable.anh1, R.drawable.anh2, R.drawable.anh3 , R.drawable.anh4, R.drawable.anh5,
               R.drawable.anh1, R.drawable.anh2, R.drawable.anh3 , R.drawable.anh4, R.drawable.anh5,
               R.drawable.anh1, R.drawable.anh2, R.drawable.anh3 , R.drawable.anh4, R.drawable.anh5,
               R.drawable.anh1, R.drawable.anh2, R.drawable.anh3 , R.drawable.anh4, R.drawable.anh5,
               R.drawable.anh1, R.drawable.anh2, R.drawable.anh3 , R.drawable.anh4, R.drawable.anh5,
       };
      
      
      
       private void init(){
           lst_Contact=(ListView) findViewById(R.id.lstContact);
          
           lst_Contact.setAdapter(new MylistAdapter());
       }
      
   
       @Override
       protected void onCreate(Bundle savedInstanceState) {
           super.onCreate(savedInstanceState);
           setContentView(R.layout.activity_contact_list);
           init();
          
       }
       class MylistAdapter extends BaseAdapter{
   
           @Override
           public int getCount() {
               // TODO Auto-generated method stub
               return dataName.length;
           }
   
           @Override
           public Object getItem(int hailamit) {
               // TODO Auto-generated method stub
               return null;
           }
   
           @Override
           public long getItemId(int hailamit) {
               // TODO Auto-generated method stub
               return 0;
           }
   
           @Override
           public View getView(final int hailamit, View arg1, ViewGroup arg2) {
              
               LayoutInflater inflater = getLayoutInflater();
               //Bơm layout vao cai View mình tao ở dưới
               View contactitemview = inflater.inflate(R.layout.contact_list_item, null);
              
               TextView textname = (TextView) contactitemview.findViewById(R.id.txtName);
               textname.setText(dataName[hailamit]);
              
               TextView textnumber = (TextView) contactitemview.findViewById(R.id.txtNumber);
               textnumber.setText(dataNumber[hailamit]);
              
               ImageView textphoto = (ImageView) contactitemview.findViewById(R.id.imvContact);
               textphoto.setImageResource(dataPhoto[hailamit]);
              
              
               textname.setOnClickListener(new OnClickListener() {
                  
                   @Override
                   public void onClick(View v) {
                       Intent intent = new Intent(ContactList.this, ContactDetailActivity.class);
                      
                       Bundle extras = new Bundle();
                      
                       extras.putString(CommonKeys.CONCTACT_NAME, dataName[hailamit]);
                       extras.putString(CommonKeys.CONCTACT_NUMBER, dataNumber[hailamit]);
                       extras.putLong(CommonKeys.CONCTACT_PHOTO, dataPhoto[hailamit]);
                      
                       intent.putExtras(extras);
                      
                      
                       startActivity(intent);
                   }
               });
               return contactitemview;
           }
          
       }
   
       @Override
       public boolean onCreateOptionsMenu(Menu menu) {
   
           // Inflate the menu; this adds items to the action bar if it is present.
           getMenuInflater().inflate(R.menu.contact_list, menu);
           return true;
       }
   
       @Override
       public boolean onOptionsItemSelected(MenuItem item) {
           // Handle action bar item clicks here. The action bar will
           // automatically handle clicks on the Home/Up button, so long
           // as you specify a parent activity in AndroidManifest.xml.
           int id = item.getItemId();
           if (id == R.id.action_settings) {
               return true;
           }
           return super.onOptionsItemSelected(item);
       }
   
       /**
        * A placeholder fragment containing a simple view.
        */
       public static class PlaceholderFragment extends Fragment {
   
           public PlaceholderFragment() {
           }
   
           @Override
           public View onCreateView(LayoutInflater inflater, ViewGroup container,
                   Bundle savedInstanceState) {
               View rootView = inflater.inflate(R.layout.activity_contact_list,
                       container, false);
               return rootView;
           }
       }
   
   }

File activity_contact_list.xml  nội dung code là: 

1. <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
2.     xmlns:tools="http://schemas.android.com/tools"
3.     android:id="@+id/LinearLayout1"
4.     android:layout_width="match_parent"
5.     android:layout_height="match_parent"
6.     android:orientation="vertical"
7.     android:paddingBottom="@dimen/activity_vertical_margin"
8.     android:paddingLeft="@dimen/activity_horizontal_margin"
9.     android:paddingRight="@dimen/activity_horizontal_margin"
10.     android:paddingTop="@dimen/activity_vertical_margin"
11.     tools:context="com.example.contactlist.ContactList$PlaceholderFragment" >
12.     <ListView
13.         android:id="@+id/lstContact"
14.         android:layout_width="match_parent"
15.         android:layout_height="wrap_content" >
16.     </ListView>
17. </LinearLayout>

File Java ContactDetailActivity.java Code là:

1. package com.example.contactlist;
2. import common.CommonKeys;
3. import android.app.Activity;
4. import android.os.Bundle;
5. import android.widget.ImageView;
6. import android.widget.TextView;
7. public class ContactDetailActivity extends Activity {
8.     private ImageView imv_Contact;
9.     private TextView txt_name;
10.     private TextView txt_number;
11.     private void init() {
12.         imv_Contact = (ImageView) findViewById(R.id.imvContact);
13.         txt_name = (TextView) findViewById(R.id.txtName);
14.         txt_number = (TextView) findViewById(R.id.txtNumber);
15.     }
16.     @Override
17.     protected void onCreate(Bundle savedInstanceState) {
18.         super.onCreate(savedInstanceState);
19.         setContentView(R.layout.activity_detail);
20.         init();
21.        
22.         Bundle extras = getIntent().getExtras();
23.         txt_name.setText(extras.getString(CommonKeys.CONCTACT_NAME));
24.         txt_number.setText(extras.getString(CommonKeys.CONCTACT_NUMBER));
25.         imv_Contact.setImageResource(extras.getInt(CommonKeys.CONCTACT_PHOTO));
26.     }
27. }

 File CommonKeys.java code là: chí ý file này nằm trong gói Common nhé

1. package common;
2. public class CommonKeys {
3.     public static final String CONCTACT_NAME = "contact_nam_key";
4.     public static final String CONCTACT_NUMBER = "contact_number_key";
5.     public static final String CONCTACT_PHOTO = "contact_photo_key";
6. }

File activity_detail.xml  mình code là:

1. <?xml version="1.0" encoding="utf-8"?>
   <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
       android:layout_width="match_parent"
       android:layout_height="match_parent"
       android:gravity="center|top"
       android:orientation="horizontal" >
   
       <ImageView
           android:id="@+id/imvContact"
           android:layout_width="wrap_content"
           android:layout_height="wrap_content"
           android:src="@drawable/ic_launcher" />
   
       <LinearLayout
           android:layout_width="fill_parent"
           android:layout_height="match_parent"
           android:gravity="center|top"
           android:orientation="vertical" >
   
           <TextView
               android:id="@+id/txtName"
               android:layout_width="fill_parent"
               android:layout_height="wrap_content"
               android:text="Large Text"
               android:textAppearance="?android:attr/textAppearanceLarge" />
   
           <TextView
               android:id="@+id/txtNumber"
               android:layout_width="fill_parent"
               android:layout_height="wrap_content"
               android:text="Medium Text"
               android:textAppearance="?android:attr/textAppearanceMedium" />
   
       </LinearLayout>
   
   </LinearLayout>

File contact_list_item.xml code là:

1. <?xml version="1.0" encoding="utf-8"?>
2. <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
3.     android:layout_width="match_parent"
4.     android:layout_height="match_parent"
5.     android:gravity="center"
6.     android:orientation="horizontal" >
7.     <ImageView
8.         android:id="@+id/imvContact"
9.         android:layout_width="80dp"
10.         android:layout_height="80dp"
11.         android:src="@drawable/ic_launcher" />
12.     <LinearLayout
13.         android:layout_width="fill_parent"
14.         android:layout_height="match_parent"
15.         android:gravity="center"
16.         android:orientation="vertical" >
17.         <TextView
18.             android:id="@+id/txtName"
19.             android:layout_width="fill_parent"
20.             android:layout_height="wrap_content"
21.             android:text="Large Text"
22.             android:textAppearance="?android:attr/textAppearanceLarge" />
23.         <TextView
24.             android:id="@+id/txtNumber"
25.             android:layout_width="fill_parent"
26.             android:layout_height="wrap_content"
27.             android:text="Medium Text"
28.             android:textAppearance="?android:attr/textAppearanceMedium" />
29.     </LinearLayout>
30. </LinearLayout>

 Ok ! vậy toàn bộ code mình đã share cho bạn rồi !
Bài sau mình sẽ hướng dẫn tối ưu code của thằng listview !