Displaying Contact Number and Contact Name in a custom list view

问题:

Can anyone tell me how should i display the phone number and the contact name in a custom list view? The code is pasted below

import android.app.Activity; import android.database.Cursor; import android.net.Uri; import android.os.Bundle; import android.provider.ContactsContract; import android.util.Log; import android.view.View; import android.view.View.OnClickListener; import android.widget.ArrayAdapter; import android.widget.Button; import android.widget.CheckBox; import android.widget.EditText; import android.widget.ListView; import android.widget.SimpleCursorAdapter;  public class AddContacts extends Activity implements OnClickListener {      ListView list;     Cursor cursor;     SimpleCursorAdapter adapter;     String phoneNumber;     Button AddNumber;     EditText number1;     EditText number2;     EditText number3;     String contact1;     String contact2;     CheckBox checkBox;     String contact_name;      static final String TAG = "In AddContacts";      @SuppressWarnings("deprecation")     @Override     protected void onCreate(Bundle savedInstanceState) {         super.onCreate(savedInstanceState);         setContentView(R.layout.listview);         AddNumber = (Button) findViewById(R.id.AddNumbers);         number1 = (EditText) findViewById(R.id.NumberField1);         number2 = (EditText) findViewById(R.id.NumberField2);         number3 = (EditText) findViewById(R.id.NumberField3);         AddNumber.setOnClickListener(this);         list = (ListView) findViewById(R.id.lists);           Log.d(TAG, "onCreate");            Cursor cursor = getContentResolver().query(                 ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null, null,                 null, null);          String[] nameNumberArray = new String[cursor.getCount()];         Log.d("rows", Integer.toString(cursor.getCount()));          Log.d("phone", "here");         while (cursor.moveToNext()) {             String phoneNumber =              cursor.getString(cursor                     .getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));             String name = cursor.getString(cursor                     .getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME));             Log.i("Number + Name", phoneNumber + name);         }         if (cursor.getCount() > 0) {              int i = 0;             if (cursor.moveToFirst()) {                 do {                     phoneNumber = cursor                             .getString(cursor                                     .getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));                      contact_name = cursor                             .getString(cursor                                     .getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME));                     nameNumberArray[i] = contact_name + "  , " + phoneNumber;                     i++;                 } while (cursor.moveToNext());             }          }          final String[] FROM = { nameNumberArray[0], nameNumberArray[1] };         final int[] TO = { R.id.contact_name, R.id.phone_number, };         adapter = new SimpleCursorAdapter(this, R.layout.row, cursor, FROM, TO);         list.setAdapter(adapter);         cursor.close();     }      @Override     public void onClick(View v) {           Log.d(TAG, "onClicked method");       } } 

The ROW.xml file is a custom listView with a checkbox and two textView to it. The code pulls the data from the contacts and displays it in the LogCat. I cant figure out how to display the name and the number in my custom view using simpleCursorAdapter.

The row.xml file

    <?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"     android:layout_width="match_parent"     android:layout_height="match_parent" >      <TextView         android:id="@+id/contact_name"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:layout_alignParentLeft="true"         android:layout_alignParentTop="true"         android:text="John Doe"         android:textAppearance="?android:attr/textAppearanceLarge" />      <TextView         android:id="@+id/phone_number"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:layout_alignParentLeft="true"         android:layout_below="@+id/contact_name"         android:text="(999)999-9999"         android:textAppearance="?android:attr/textAppearanceMedium" />      <CheckBox         android:id="@+id/checkBox_id"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:layout_alignParentRight="true"         android:layout_alignParentTop="true" />  </RelativeLayout> 

Can anyone guide me? Thanks.

回答1:

Since op asked for the solution using custom adapter i have posted the below.(from the comments)

Display.java

public class Display extends Activity implements OnItemClickListener{      List<String> name1 = new ArrayList<String>();     List<String> phno1 = new ArrayList<String>();     MyAdapter ma ;     Button select;     @Override     protected void onCreate(Bundle savedInstanceState) {         super.onCreate(savedInstanceState);         setContentView(R.layout.display);          getAllContacts(this.getContentResolver());         ListView lv= (ListView) findViewById(R.id.lv);             ma = new MyAdapter();             lv.setAdapter(ma);             lv.setOnItemClickListener(this);              lv.setItemsCanFocus(false);             lv.setTextFilterEnabled(true);             // adding            select = (Button) findViewById(R.id.button1);         select.setOnClickListener(new OnClickListener()         {              @Override             public void onClick(View v) {                   StringBuilder checkedcontacts= new StringBuilder();                 System.out.println(".............."+ma.mCheckStates.size());                 for(int i = 0; i < name1.size(); i++)                      {                     if(ma.mCheckStates.get(i)==true)                     {                          checkedcontacts.append(name1.get(i).toString());                          checkedcontacts.append("\n");                      }                     else                     {                         System.out.println("Not Checked......"+name1.get(i).toString());                     }                   }                  Toast.makeText(Display.this, checkedcontacts,1000).show();             }                });       }     @Override     public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) {         // TODO Auto-generated method stub          ma.toggle(arg2);     }      public  void getAllContacts(ContentResolver cr) {          Cursor phones = cr.query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null,null,null, null);         while (phones.moveToNext())         {           String name=phones.getString(phones.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME));           String phoneNumber = phones.getString(phones.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));           System.out.println(".................."+phoneNumber);            name1.add(name);           phno1.add(phoneNumber);         }          phones.close();      }     class MyAdapter extends BaseAdapter implements CompoundButton.OnCheckedChangeListener     {  private SparseBooleanArray mCheckStates;        LayoutInflater mInflater;         TextView tv1,tv;         CheckBox cb;         MyAdapter()         {             mCheckStates = new SparseBooleanArray(name1.size());             mInflater = (LayoutInflater)Display.this.getSystemService(Context.LAYOUT_INFLATER_SERVICE);         }         @Override         public int getCount() {             // TODO Auto-generated method stub             return name1.size();         }          @Override         public Object getItem(int position) {             // TODO Auto-generated method stub             return position;         }          @Override         public long getItemId(int position) {             // TODO Auto-generated method stub              return 0;         }          @Override         public View getView(final int position, View convertView, ViewGroup parent) {             // TODO Auto-generated method stub             View vi=convertView;             if(convertView==null)              vi = mInflater.inflate(R.layout.row, null);               TextView tv= (TextView) vi.findViewById(R.id.textView1);              tv1= (TextView) vi.findViewById(R.id.textView2);              cb = (CheckBox) vi.findViewById(R.id.checkBox1);              tv.setText("Name :"+ name1.get(position));              tv1.setText("Phone No :"+ phno1.get(position));              cb.setTag(position);              cb.setChecked(mCheckStates.get(position, false));              cb.setOnCheckedChangeListener(this);              return vi;         }          public boolean isChecked(int position) {                 return mCheckStates.get(position, false);             }              public void setChecked(int position, boolean isChecked) {                 mCheckStates.put(position, isChecked);                 System.out.println("hello...........");                 notifyDataSetChanged();             }              public void toggle(int position) {                 setChecked(position, !isChecked(position));             }         @Override         public void onCheckedChanged(CompoundButton buttonView,                 boolean isChecked) {             // TODO Auto-generated method stub               mCheckStates.put((Integer) buttonView.getTag(), isChecked);                  }        }    } 

display.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"     xmlns:tools="http://schemas.android.com/tools"     android:layout_width="match_parent"     android:layout_height="match_parent"     tools:context=".MainActivity" >     <ListView        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:layout_above="@+id/button1"         android:id="@+id/lv"/>       <Button          android:id="@+id/button1"          android:layout_width="wrap_content"          android:layout_height="wrap_content"          android:layout_alignParentBottom="true"          android:layout_centerHorizontal="true"          android:text="Select" />  </RelativeLayout> 

Explanation:

The above uses a Custom Adapter. A custom layout row.xml with 2 textviews and one checkbox is inflated for each row. getAllContacts() will get all contacts from the contacts list and you store them in a list.

Custom Adapter displays the items in a custom layout inflated for each row.

When you check the check box and click display displays a toast with selected contacts name.

Snap shot

回答2:

I think you should call cursor.moveToFirst() again before passing it to the SimpleCursorAdapter, as right now you're sending a "finished" cursor.

Besides that, your code seems fine. You can compare it to the code here, which does something similar (But with a user-defined database).

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