重写dialog,CursorAdapter实现带多选的ListView

public class ContactDialog2 extends Dialog {
private Context mContext;
private Cursor mCursor;
private final Map<Integer, CheckBox> checkBoxs = new HashMap<Integer, CheckBox>();;
private final LayoutInflater mInflater; //用于实例化一个layout对象

private ContactAdapter mContactAdapter;
private int dataCount;
private boolean[] checks;

public ContactDialog2(Context context, int theme) {
super(context, theme);
mContext = context;
mInflater = (LayoutInflater) mContext
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
init();
}

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);

View view = mInflater.inflate(R.layout.contact_dialog, null);

ListView mListView = (ListView) view.findViewById(R.id.mListView);
mListView.setAdapter(mContactAdapter);


Button allButton = (Button) view.findViewById(R.id.all_button);
allButton.setOnClickListener(new View.OnClickListener() {

@Override
public void onClick(View v) {
// TODO Auto-generated method stub
int size = checkBoxs.size();
StringBuilder sb = new StringBuilder() ;
for (int i = 0; i < dataCount; i++) {
CheckBox checkBox = checkBoxs.get(i) ;
if (i < size) {
checkBox.setChecked(true);
sb.append(checkBox.getText()).append(", ") ;
}

if (i >= size) {
checks[i] = true;
mCursor.moveToPosition(i) ;
sb.append(mCursor.getString(mCursor.getColumnIndex(ContactsContract.Data.DISPLAY_NAME))).append(", ") ;
}
}

Log.i("DDDDDDD", sb.toString()) ;
}
});

Button invertButton = (Button) view.findViewById(R.id.invert_button);
invertButton.setOnClickListener(new View.OnClickListener() {

@Override
public void onClick(View v) {
int size = checkBoxs.size();

StringBuilder sb = new StringBuilder() ;
for (int i = 0; i < dataCount; i++) {
if (i < size) {
CheckBox checkBox = checkBoxs.get(i);

if (checkBox.isChecked()) {
checkBox.setChecked(false);
} else {
checkBox.setChecked(true);
sb.append(checkBox.getText()).append(", ") ;
}
}

if (i >= size) {
if (checks[i] == false) {
checks[i] = true;
mCursor.moveToPosition(i) ;
sb.append(mCursor.getString(mCursor.getColumnIndex(ContactsContract.Data.DISPLAY_NAME))).append(", ") ;
} else {
checks[i] = false;
}
}
}

if (sb.toString() == "") {
Log.i("fanxuan", "null") ;
}
Log.i("fanxuan", sb.toString()) ;
}
});

Button closeButton = (Button) view.findViewById(R.id.close_button);
closeButton.setOnClickListener(new View.OnClickListener() {

@Override
public void onClick(View v) {
// unregisterReceiver(checksReceiver) ;
ContactDialog2.this.dismiss();
}
});

setContentView(view);
}

private void getContacts() {
// Run query
Uri uri = ContactsContract.Contacts.CONTENT_URI;
String[] projection = new String[] { ContactsContract.Contacts._ID,
ContactsContract.Contacts.DISPLAY_NAME };
String selection = ContactsContract.Contacts.IN_VISIBLE_GROUP + " = '"
+ "1" + "'";
String[] selectionArgs = null;
String sortOrder = ContactsContract.Contacts.DISPLAY_NAME
+ " COLLATE LOCALIZED ASC";

mCursor = mContext.getContentResolver().query(uri, projection,
selection, selectionArgs, sortOrder);
}

@Override
public void dismiss() {
mCursor.close();
super.dismiss();
}

private void init() {
getContacts();
dataCount = mCursor.getCount();
mContactAdapter = new ContactAdapter(mContext, mCursor);

checks = new boolean[dataCount];
for (int i = 0; i < checks.length; i++) {
checks[i] = false;
}
}
//继承cursorAdapter并重写其中的方法
private class ContactAdapter extends CursorAdapter {

public ContactAdapter(Context context, Cursor c) {
super(context, c);
}

@Override
public void bindView(View view, Context context, Cursor cursor) {
//得到视图中checkBox对象
CheckBox mCheckBox = (CheckBox) view.findViewById(R.id.checkBox);

int position = cursor.getPosition();
String aString = String.valueOf(position);
Log.i("bindView",aString);
//对checkBox对象属性赋值
if (!checkBoxs.containsKey(position)) {
mCheckBox.setText(cursor.getString(cursor
.getColumnIndex(ContactsContract.Data.DISPLAY_NAME)));
mCheckBox.setChecked(checks[position]);

} else {
mCheckBox.setText(checkBoxs.get(position).getText());
mCheckBox.setChecked(checkBoxs.get(position).isChecked());
checkBoxs.remove(position);
}


checkBoxs.put(position, mCheckBox);
}

@Override
public View newView(Context context, Cursor cursor, ViewGroup parent) {
final View view = mInflater.inflate(R.layout.contact_entry, parent,
false);//找到contact_entry.xml的视图，并把他赋给View
return view;
}

@Override
public View getView(int position, View convertView, ViewGroup parent) {
View v = newView(mContext, mCursor, parent);
mCursor.moveToPosition(position);
bindView(v, mContext, mCursor);
return v;
}
}
}

评论

1 楼 KEIJIjava 2010-11-25  

请加上 xml 文件 以便执行动作检验