Android 基于数据库刷新listview
我是android新手，在我的应用程序中，我有一个带有图像、文本视图和按钮的列表视图。当我在列表视图中单击按钮时，特定项目的所有数据都存储到sqlite db和webservice，然后我从webservice获得一个响应字符串，我在sqlite DB的字段中更新了这个字符串。在这里，我需要通过刷新listview将这个字符串设置到listview的按钮中。下面是我的代码Android 基于数据库刷新listview,android,sqlite,listview,Android,Sqlite,Listview,我是android新手，在我的应用程序中，我有一个带有图像、文本视图和按钮的列表视图。当我在列表视图中单击按钮时，特定项目的所有数据都存储到sqlite db和webservice，然后我从webservice获得一个响应字符串，我在sqlite DB的字段中更新了这个字符串。在这里，我需要通过刷新listview将这个字符串设置到listview的按钮中。下面是我的代码 public class MainActivity extends ListActivity implements Regi
public class MainActivity extends ListActivity implements RegisterContactToServer.AsyncResponseListener {
ListView lv;
Cursor cursor,cursor1;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.list_contact);
cursor=getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null, null, null, null);
startManagingCursor(cursor);
String[] from={ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME,ContactsContract.CommonDataKinds.Phone.NUMBER,ContactsContract.CommonDataKinds.Phone._ID};
int[] to={R.id.name_entry,R.id.number_entry};
ContactList listadapter=new ContactList(this,R.layout.single_row1,cursor,from,to);
setListAdapter(listadapter);
lv=getListView();
lv.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE);
}
class ContactList extends SimpleCursorAdapter implements Filterable {
private Context context;
String strfromMobileno="";
private int layout;
public ContactList(Context context, int layout, Cursor c,
String[] from, int[] to) {
super(context, layout, c, from, to);
this.context=context;
this.layout=layout;
// TODO Auto-generated constructor stub
}
@Override
public View newView(Context context, Cursor cursor, ViewGroup parent) {
final LayoutInflater inflater = LayoutInflater.from(context);
View v = inflater.inflate(layout, parent, false);
return v;
}
@Override
public void bindView(View v, final Context context, Cursor c) {
int nameCol = c.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME);
String name = c.getString(nameCol);
int noCol = c.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER);
String no = c.getString(noCol);
final CheckBox p1 = (CheckBox) v.findViewById(R.id.checkBox1);
final CheckBox p2 = (CheckBox) v.findViewById(R.id.checkBox2);
final CheckBox p3 = (CheckBox) v.findViewById(R.id.checkBox3);
final TextView name_text = (TextView) v.findViewById(R.id.name_entry);
if (name_text != null) {
name_text.setText(name);
}
final TextView no_text = (TextView) v.findViewById(R.id.number_entry);
if (no_text != null) {
no_text.setText(no);
}
final Contact contact=new Contact();
final Button btn=(Button)v.findViewById(R.id.button1);
btn.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
// TODO Auto-generated method stub
String contactName = name_text.getText().toString();
String contactNo =no_text.getText().toString();
String statusR=btn.getText().toString();
contact.setFromMobileno(contactName);
contact.setToMobileno(contactNo);
if(p1.isChecked()){
int priority1=Integer.parseInt(p1.getText().toString());
contact.setPriority1(1);
}else{contact.setPriority1(0);}
if(p2.isChecked())
{
int priority2=Integer.parseInt(p2.getText().toString());
contact.setPriority2(1);
}else{contact.setPriority2(0);}
if(p3.isChecked()){
int priority3=Integer.parseInt(p3.getText().toString());
contact.setPriority3(1);
}else{contact.setPriority3(0);}
contact.setStatus(statusR);
if (!contactName.equals("") ){
RegisterConactDBAdapter cdbhelper=new RegisterConactDBAdapter(context);
cdbhelper.open();
cdbhelper.CreateUser(contact);
RegisterContactToServer reg=new RegisterContactToServer(context);
reg.execute(contact);
Intent intent = new Intent(context,ListRefresh.class);
startActivity(intent);
}
}
});
}
}
@Override
public void onresponse(String status, String jsonData) {
// TODO Auto-generated method stub
RegisterConactDBAdapter cdbheler=new RegisterConactDBAdapter(getBaseContext());
cdbheler.open();
cdbheler.UpdateStatus(jsonData);
}
}
在更新
dbdbyourAdapter.notifyDatasetChanged（）