1
我有一個活動（A），它有一個Button，當用戶按下它時，它將添加一個Object到static List。我有另一個活動（B），它有一個ListView來顯示靜態列表的內容。在活動（B）中，我想使用存儲在特定行的靜態列表中的對象的屬性。我怎樣才能做到這一點？我的代碼如下所示：使用BaseAdapter從Listview獲取數據
//Activity (A):
Send.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
...
// Add to mycaseList
All_Static.MyCaseList.add(case1);
...
}});
//==============================================================================
//Activity (B):
public class MyPage extends Activity {
boolean returnvar ;
private Activity mContext;
Button createForm;
Button ConfExpandRegion, Cancelb;
String ExpandMsg, CancelMsg;
boolean b;
MyCaseClass mycase;
TextView tvCase;
AlertDialog alertDialog;
//for list
ListView list;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.mypage);
// Moving to another 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
list = (ListView) findViewById(R.id.mypage_list);
list.setClickable(true);
final List<MyCaseClass> listOfMyCases = new ArrayList<MyCaseClass>();
MyCasesListAdapter adapter = new MyCasesListAdapter(this, listOfMyCases, MyPage.this);
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) {
}
});
// ========================================================================================
}
public void sendSMS(String number, String msg) throws Exception {
if (!b) {
SmsManager smsManager = SmsManager.getDefault();
smsManager.sendTextMessage(number, null, msg, null, null);
}
b = true;
}
// ========================================================================
public void ShowingDialogExpand(){
final AlertDialog alertDialog = new AlertDialog.Builder(this).create();
alertDialog.setTitle("Conformation");
alertDialog.setMessage("Are you sure you want to Expand Report Region?");
alertDialog.setButton("Yes", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
ExpandMsg = "Case_ID expand";
if (!b) {
try {
// Should write server number here + the chatting must be pushed above
sendSMS("0000", ExpandMsg);
Toast.makeText(MyPage.this, "Request Sent", Toast.LENGTH_LONG)
.show();
} catch (Exception e) {
// TODO Auto-generated catch block
Toast.makeText(MyPage.this, e.getMessage(),
Toast.LENGTH_LONG).show();
}
}
//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();
}
public void ShowingDialogCancel(int i){
final AlertDialog alertDialog2 = new AlertDialog.Builder(this).create();
alertDialog2.setTitle("Conformation?");
alertDialog2.setMessage("Are you sure you want to cancel x cases?");
String str = "ID:" + i;
Toast.makeText(MyPage.this, str , 0)
.show();
alertDialog2.setButton("Yes", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
CancelMsg = "Case_ID cancel";
returnvar=true;
if (!b) {
try {
// Should write server number here + the chatting must be pushed above
sendSMS("0000", CancelMsg);
Toast.makeText(MyPage.this, "Cancelation request sent", Toast.LENGTH_LONG)
.show();
} catch (Exception e) {
// TODO Auto-generated catch block
Toast.makeText(MyPage.this, e.getMessage(),
Toast.LENGTH_LONG).show();
}
}
}
});
alertDialog2.setButton2("No", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
// here you can add functions
// Do nothing
returnvar = false;
Toast.makeText(MyPage.this, "inside No", 0)
.show();
}
});
alertDialog2.setIcon(android.R.drawable.ic_dialog_alert);
alertDialog2.show();
}
}
//=================================================================================
// My BaseAdapter
public class MyCasesListAdapter extends BaseAdapter {
private MyPage myPage;
private List<MyCaseClass> listOfCases;
private Activity parentActivity;
// TODO test
MyCaseClass entry;
// TODO delete it not imp.
public MyCasesListAdapter() {
super();
}
public MyCasesListAdapter(MyPage mypage, List<MyCaseClass> listOfCaseParameter, Activity parentActivity) {
this.myPage = mypage;
this.listOfCases = listOfCaseParameter;
this.parentActivity = parentActivity;
}
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) {
entry = listOfCases.get(position);
//this.getitem(position)
if (convertView == null) {
LayoutInflater inflater = (LayoutInflater) myPage
.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);
ConfExpandRegion.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
// TODO Auto-generated method stub
myPage.ShowingDialogExpand();
}
});
// 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
entry = (MyCaseClass) v.getTag();
int caseid= entry.getID();
myPage.ShowingDialogCancel(caseid);
Toast.makeText(myPage, "inside calling", 0).show();
//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);
}
}
//===========================================================================
// StaticClass
public class All_Static {
public static List<MyCaseClass> MyCaseList = new ArrayList<MyCaseClass>();
public static List<MyCaseClass> getMyCaseList() {
return MyCaseList;
}
public static void setMyCaseList(List<MyCaseClass> myCaseList) {
MyCaseList = myCaseList;
}
//===========================================================================
public static List<HelpersClass> HelperList = new ArrayList<HelpersClass>();
public static List<HelpersClass> getHelperList() {
return HelperList;
}
public static void setHelperList(List<HelpersClass> helperList) {
HelperList = helperList;
}
}
，我不知道如果我明白你的問題，但如果你想傳遞的對象這裏的活動A到活動B是從[如何在Android中將對象從一個活動傳遞到另一個活動]的一種方法（http://stackoverflow.com/questions/2736389/how-to-pass-object-from-one-activity-到另一個在Android） – Sam 2012-04-28 18:35:59