مشکل در اکتیویتی لطفا کمک کنید

اکتیویتی دوم

public class AddActivity extends Activity implements OnClickListener { EditText etmsg; DateFormat fmtDateAndTime = DateFormat.getDateTimeInstance(); TextView lblDateAndTime; Calendar myCalendar = Calendar.getInstance(); DatePickerDialog.OnDateSetListener d = new DatePickerDialog.OnDateSetListener() { @Override public void onDateSet(DatePicker view, int year, int monthOfYear, int dayOfMonth) { myCalendar.set(Calendar.YEAR, year); myCalendar.set(Calendar.MONTH, monthOfYear); myCalendar.set(Calendar.DAY_OF_MONTH, dayOfMonth); updateLabel(); } }; TimePickerDialog.OnTimeSetListener t = new TimePickerDialog.OnTimeSetListener() { @Override public void onTimeSet(TimePicker view, int hourOfDay, int minute) { myCalendar.set(Calendar.HOUR_OF_DAY, hourOfDay); myCalendar.set(Calendar.MINUTE, minute); updateLabel(); } }; private void updateLabel() { lblDateAndTime.setText(fmtDateAndTime.format(myCalendar.getTime())); } Button date, time; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.add_layout); // TODO Auto-generated method stub etmsg = (EditText) findViewById(R.id.etmsg); lblDateAndTime = (TextView) findViewById(R.id.tvdatetime); date = (Button) findViewById(R.id.btndate); date.setOnClickListener(this); time = (Button) findViewById(R.id.btntime); time.setOnClickListener(this); } @Override public void onClick(View v) { // TODO Auto-generated method stub switch (v.getId()) { case R.id.btndate: new DatePickerDialog(AddActivity.this, d, myCalendar .get(Calendar.YEAR), myCalendar.get(Calendar.MONTH), myCalendar.get(Calendar.DAY_OF_MONTH)).show(); break; case R.id.btntime: new TimePickerDialog(AddActivity.this, t, myCalendar .get(Calendar.HOUR_OF_DAY), myCalendar .get(Calendar.MINUTE), true).show(); break; } }
}

public class MainActivity extends Activity { /** Called when the activity is first created. */ Button btnadd; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); btnadd = (Button) findViewById(R.id.btnjadid); btnadd.setOnClickListener(new OnClickListener() { @Override public void onClick(View arg0) { // TODO Auto-generated method stub Intent i = new Intent(MainActivity.this, AddActivity.class); startActivity(i); } }); }

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android" package="mozhgan.Teset" android:versionCode="1" android:versionName="1.0" > <uses-sdk android:minSdkVersion="15" /> <application android:icon="@drawable/ic_launcher" android:label="@string/app_name" > <activity android:name=".MainActivity" android:label="@string/app_name" > <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> <activity android:name=".AddActivity"></activity> </application>
</manifest>