問題動態添加項目到列表視圖與自定義適配器

Question

我有問題來動態地添加項目list view與custom adapter當我點擊按鈕。實際上最後一個短信被新的短信所覆蓋。

我向你展示我的代碼！

在此先感謝大家......我希望你能幫助我！

模型類：

public class Sms { 
    String nome; 
    String testo; 

    public Sms(String nome, String testo) { 

     this.nome=nome; 
     this.testo=testo; 

    } 

    public String getNome() { 
     return nome; 
    } 

    public String getTesto() { 
     return testo; 
    } 


} 

定義適配器：

public class CustomAdapter extends ArrayAdapter<Sms> { 

    private ArrayList<Sms> dataSms; 
    Context mContext; 
    //ArrayList<Location> data = new ArrayList<Location>(); 
    // View lookup cache 
    private static class ViewHolder { 
     TextView txtNome; 
     TextView txtTesto; 
    } 

    public CustomAdapter(ArrayList<Sms> data, Context context) { 
     super(context, R.layout.row_item, data); 
     this.dataSms = data; 
     this.mContext=context; 

    } 

/* @Override 
    public void onClick(View v) { 

     int position=(Integer) v.getTag(); 
     Object object= getItem(position); 
     DataModel dataModel=(DataModel)object; 

     switch (v.getId()) 
     { 
      case R.id.item_info: 
       Snackbar.make(v, "Release date " +dataModel.getFeature(), Snackbar.LENGTH_LONG) 
         .setAction("No action", null).show(); 
       break; 
     } 
    }*/ 

    //private int lastPosition = -1; 
    @Override 
    public int getCount() { 
     return dataSms.size(); 
    } 
    /* @Override 
    public Object getItem(int pos) { 
     return dataSms.get(pos); 
    }*/ 
    @Override 
    public long getItemId(int position) { 
     return position; 
    } 
    @Override 
    public void add(Sms sms) { 
     dataSms.add(sms); 
     notifyDataSetChanged(); 
    } 
    @Override 
    public View getView(int position, View convertView, ViewGroup parent) { 
     // Get the data item for this position 
     Sms sms = getItem(position); 
     // Check if an existing view is being reused, otherwise inflate the view 
     ViewHolder viewHolder; // view lookup cache stored in tag 

     final View result; 

     if (convertView == null) { 

      viewHolder = new ViewHolder(); 
      LayoutInflater inflater = LayoutInflater.from(getContext()); 
      convertView = inflater.inflate(R.layout.row_item, parent, false); 
      viewHolder.txtNome = (TextView) convertView.findViewById(R.id.nome); 
      viewHolder.txtTesto = (TextView) convertView.findViewById(R.id.testo); 

      result=convertView; 

      convertView.setTag(viewHolder); 
     } else { 
      viewHolder = (ViewHolder) convertView.getTag(); 
      result=convertView; 
     } 

     /*Animation animation = AnimationUtils.loadAnimation(mContext, (position > lastPosition) ? R.anim.up_from_bottom : R.anim.down_from_top); 
     result.startAnimation(animation);*/ 
     // lastPosition = position; 

     viewHolder.txtNome.setText(sms.getNome()); 
     viewHolder.txtTesto.setText(sms.getTesto()); 
     /*viewHolder.info.setOnClickListener(this); 
     viewHolder.info.setTag(position);*/ 
     // Return the completed view to render on screen 
     return convertView; 
    } 
} 

主要活動：

public class MainActivity extends Activity { 
    private static final int PERMS_REQUEST_CODE = 123; 
    private static final int REQUEST_CODE = 1; 
    TextView textViewTime; 
    TimePicker timePicker; 
    Button button; 

    ArrayList<Sms> dataSms; 
    ListView listView; 
    public static CustomAdapter adapter; 

    int hour; 
    int minutee; 
    //int hour; 
    //int minute; 
    //ListView lv; 
    //ArrayList<String> al; 
    //ArrayAdapter<String> aa; 

    final int TIME_DIALOG_ID = 999; 

    /*public String sPhone,sSms; 
    public EditText etPhone,etSms;*/ 

    public Button bStart, bCancel, bTimeSelect, bPhone; 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); 
     //Button b=(Button) findViewById(R.id.button1); 
     //Button button=(Button) findViewById(R.id.button); 

     bStart = (Button) findViewById(R.id.bStart); 
     //bCancel = (Button)findViewById(R.id.bCancel); 
     bTimeSelect = (Button) findViewById(R.id.bTime); 
     bPhone = (Button) findViewById(R.id.bCPhone); 


     bStart.setOnClickListener(new View.OnClickListener() { 
      @Override 
      public void onClick(View v) { 
      /* if (hasPermissions()) { 
        // our app has permissions. 
        scheduleAlarm(v); 
       } else { 
        //our app doesn't have permissions, So i m requesting permissions. 
        requestPerms(); 
       }*/ 
       scheduleAlarm(v); 

      } 
     }); 

     bTimeSelect.setOnClickListener(new View.OnClickListener() { 
      @TargetApi(Build.VERSION_CODES.HONEYCOMB) 
      @Override 
      public void onClick(View v) { 

       DialogFragment newFragment = new TimePickerFragment(); 
       newFragment.show(getFragmentManager(), "TimePicker"); 

      } 
     }); 

     //}; 
     bPhone.setOnClickListener(new View.OnClickListener() { 

      @Override 
      public void onClick(View arg0) { 
       // TODO Auto-generated method stub 
       Uri uri = Uri.parse("content://contacts"); 
       Intent intent = new Intent(Intent.ACTION_PICK, uri); 
       intent.setType(ContactsContract.CommonDataKinds.Phone.CONTENT_TYPE); 
       startActivityForResult(intent, REQUEST_CODE); 
      } 
     }); 


    } 


    @TargetApi(Build.VERSION_CODES.HONEYCOMB) 
    @SuppressLint("ValidFragment") 
    public class TimePickerFragment extends DialogFragment implements TimePickerDialog.OnTimeSetListener { 

     //TimePicker timePicker; 
     //int hour; 
     //int minutee; 

     @TargetApi(Build.VERSION_CODES.HONEYCOMB) 
     @Override 
     public Dialog onCreateDialog(Bundle savedInstanceState) { 
      //Use the current time as the default values for the time picker 
      final Calendar c = Calendar.getInstance(); 
      int hour = c.get(Calendar.HOUR_OF_DAY); 
      int minute = c.get(Calendar.MINUTE); 

      //Create and return a new instance of TimePickerDialog 
      return new TimePickerDialog(getActivity(), this, hour, minute, 
        DateFormat.is24HourFormat(getActivity())); 
     } 


     //onTimeSet() callback method 
     @TargetApi(Build.VERSION_CODES.M) 
     public void onTimeSet(TimePicker view, int hourOfDay, int minute) { 

      hour = hourOfDay; 
      minutee = minute; 


     } 
    } 


    @TargetApi(Build.VERSION_CODES.M) 
    public void scheduleAlarm(View V) { 


     listView = (ListView) findViewById(R.id.listView1); 

     dataSms = new ArrayList<>(); 


     EditText et1 = (EditText) findViewById(R.id.etPhone); 
     EditText et2 = (EditText) findViewById(R.id.etSms); 
     String name = et1.getText().toString(); 
     String sms = et2.getText().toString(); 


     dataSms.add(new Sms(name, sms)); 
     adapter = new CustomAdapter(dataSms, getApplicationContext()); 

     listView.setAdapter(adapter); 


     // PendingIntent pendingIntent; 
     //Long time= new GregorianCalendar().getTimeInMillis()+24*60*60*1000; 
     // Long time = new GregorianCalendar().getTimeInMillis() + 10000; 
     //Long time= System.currentTimeMillis() + 10000; 

     Intent intentAlarm = new Intent(this, AlarmReceiver.class); 
     AlarmManager alarmManager = (AlarmManager) getSystemService(Context.ALARM_SERVICE); 
     Bundle bundle = new Bundle(); 
     bundle.putCharSequence("Number", name); 
     bundle.putCharSequence("Message", sms); 
     intentAlarm.putExtras(bundle); 


     final Calendar c = Calendar.getInstance(); 
     c.setTimeInMillis(System.currentTimeMillis()); 
     c.set(Calendar.HOUR_OF_DAY, hour); 
     c.set(Calendar.MINUTE, minutee); 
     //alarmManager.set(AlarmManager.RTC_WAKEUP, time, PendingIntent.getBroadcast(this, 1, intentAlarm, PendingIntent.FLAG_UPDATE_CURRENT)); 
     alarmManager.set(AlarmManager.RTC_WAKEUP, c.getTimeInMillis(), PendingIntent.getBroadcast(this, 1, intentAlarm, PendingIntent.FLAG_UPDATE_CURRENT)); 


     Toast.makeText(this, "Messaggio programmato!", Toast.LENGTH_LONG).show(); 


    } 
} 

Answer 1

移動此代碼onCreate方法

listView = (ListView) findViewById(R.id.listView1); 
    dataSms = new ArrayList<>(); 
    adapter = new CustomAdapter(dataSms, getApplicationContext()); 
    listView.setAdapter(adapter); 

和內上scheduleAlarm方法來創建和適配器

adapter.add(new Sms(name, sms));