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如何使ListView中的BaseAdapter中的按鈕顯示alertDialog，我試過，但它停止工作意外（運行時錯誤）我的代碼如下所示。如何使BaseAdapter顯示AlertDialog android應用程序
任何建議
在此先感謝
Monerah
====更新=====================
後import java.util.List;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;
public class MyCasesListAdapter extends BaseAdapter {
private Context context;
private List<MyCaseClass> listOfCases;
// TODO delete it not imp.
public MyCasesListAdapter() {
super();
}
public MyCasesListAdapter(Context context, List<MyCaseClass> listPhonebook) {
this.context = context;
this.listOfCases = listPhonebook;
}
public int getCount() {
return listOfCases.size();
}
public Object getItem(int position) {
return listOfCases.get(position);
}
public long getItemId(int position) {
return position;
}
public View getView(int position, View convertView, ViewGroup viewGroup) {
MyCaseClass entry = listOfCases.get(position);
if (convertView == null) {
LayoutInflater inflater = (LayoutInflater) context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = inflater.inflate(R.layout.mypage_row, null);
}
// this is row items..
// Set the onClick Listener on this button
Button ConfExpandRegion = (Button) convertView.findViewById(R.id.expand);
Button Cancelb = (Button) convertView.findViewById(R.id.cancelCase);
TextView tvCase = (TextView) convertView.findViewById(R.id.mypage_name);
//To be a clickable button
ConfExpandRegion.setFocusableInTouchMode(false);
ConfExpandRegion.setFocusable(false);
//For Dialog
AlertDialog alertDialog = new AlertDialog.Builder(MyCasesListAdapter.this);
alertDialog.setTitle("Conformation");
alertDialog.setMessage("Are you sure you want to do ???");
ConfExpandRegion.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
// TODO Auto-generated method stub
alertDialog.setButton("Yes", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
// Some code
//ConfExpandRegion.setEnabled(false);
}
});
alertDialog.setButton2("No", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
// here you can add functions
// Do nothing
}
});
alertDialog.setIcon(android.R.drawable.ic_dialog_alert);
alertDialog.show();
}});
//To be a clickable button
Cancelb.setFocusableInTouchMode(false);
Cancelb.setFocusable(false);
Cancelb.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
// TODO Auto-generated method stub
MyCaseClass entry = (MyCaseClass) v.getTag();
listOfCases.remove(entry);
// listPhonebook.remove(view.getId());
notifyDataSetChanged();
}
});
// Set the entry, so that you can capture which item was clicked and
// then remove it
// As an alternative, you can use the id/position of the item to capture
// the item
// that was clicked.
ConfExpandRegion.setTag(entry);
Cancelb.setTag(entry);
// btnRemove.setId(position);
return convertView;
}
public void onClick(View view) {
MyCaseClass entry = (MyCaseClass) view.getTag();
listOfCases.remove(entry);
// listPhonebook.remove(view.getId());
notifyDataSetChanged();
}
private void showDialog(MyCaseClass entry) {
// Create and show your dialog
// Depending on the Dialogs button clicks delete it or do nothing
}
public void add(MyCaseClass myCaseClass) {
// TODO Auto-generated method stub
listOfCases.add(myCaseClass);
}
}
// ========================================== ==================================
import java.util.ArrayList;
import java.util.List;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.Intent;
import android.os.Bundle;
import android.telephony.SmsManager;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.Button;
import android.widget.ListView;
import android.widget.TextView;
public class MyPage extends Activity {
Button createForm;
Button ConfExpandRegion, Cancelb;
String ExpandMsg, CancelMsg;
boolean b;
MyCaseClass mycase;
TextView tvCase;
AlertDialog alertDialog;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.mypage);
// Moving to anther activity
createForm = (Button) findViewById(R.id.creat_new_formbtn);
createForm.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
Intent j = new Intent(MyPage.this, CreateNewForm.class);
startActivity(j);
}
});
// ============================================================================================
// for list
ListView list = (ListView) findViewById(R.id.mypage_list);
list.setClickable(true);
final List<MyCaseClass> listOfPhonebook = new ArrayList<MyCaseClass>();
MyCasesListAdapter adapter = new MyCasesListAdapter(this, listOfPhonebook);
for (MyCaseClass m : All_Static.getMyCaseList())
adapter.add(new MyCaseClass(m));
// after fill the adapter.. assign the list to the adapter
list.setAdapter(adapter);
list.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> arg0, View view, int position, long index) {
System.out.println("sadsfsf");
;
}
});
list.setAdapter(adapter);
// ========================================================================================
}
public void sendSMS(String number, String msg) throws Exception {
if (!b) {
SmsManager smsManager = SmsManager.getDefault();
smsManager.sendTextMessage(number, null, msg, null, null);
}
b = true;
}
// ========================================================================
}
您是否得到了其解答？ – KickingLettuce 2013-01-08 17:53:31