我希望能够在用户开始更改时检测到datepicker上的更改.但是,我不想使用datrpickerdialog.有没有人知道为什么在更改datepicker上的日期时onDateSet(DatePicker arg0,int arg1,int arg2,int arg3)不会触发？
我对此表示高度赞赏.干杯
这是我的代码的简化版本：
public class AddItem extends Activity implements OnDateChangedListener,OnDateSetListener{
DatePicker start ;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.entryelements);
start = (DatePicker) findViewById(R.id.start);
@Override
public void onDateChanged(DatePicker view,int year,int monthOfYear,int dayOfMonth) {
// TODO Auto-generated method stub
Toast.makeText(getApplicationContext()," thiv view"+year,Toast.LENGTH_LONG).show();
Log.v("indatechange","ok");
}
@Override
public void onDateSet(DatePicker arg0,int arg3) {
// TODO Auto-generated method stub
Toast.makeText(getApplicationContext()," thiv view"+arg0,"ok");
}
}
解决方法
您需要告诉DatePicker有关OnDateChangedListener的信息.与常规小部件不同,DatePicker没有setOnDateChangedListener()……但它确实有
init().使用init()设置默认日期并一起声明监听器：
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.entryelements);
// Set the date to now
Calendar calendar = Calendar.getInstance();
start = (DatePicker) findViewById(R.id.start);
start.init(calendar.get(Calendar.YEAR),calendar.get(Calendar.MONTH),calendar.get(Calendar.DAY_OF_MONTH),this);
}
