在Activity中，我根据检查的radiobutton调用不同的片段，使用用户输入的不同内容打开不同的片段。 对于这个用户必须＆＃34;设置日期＆＃34;和＆＃34;设定时间＆＃34;。
我正在使用此处的代码...... click here
当我在一个Activity中尝试它时工作正常。 但是当我把代码放在一个片段中时，
showDialog(DATE_DIALOG_ID);
和
showDialog(TIME_DIALOG_ID);
有错误
对于新类型View.OnclickListener（）{
，未定义方法 showDialog（int）和
return new DatePickerDialog(this, datetoperform, currentYear, currentMonth, currentDay);
有错误
构造函数DatePickerDialog（OrderTypeGeneralOrderFragment，DatePickerDialog.OnDateSetListener，int，int，int）未定义
和
return new TimePickerDialog(this, timeDate, hour, minute, false);
有错误
构造函数
**TimePickerDialog(OrderTypeGeneralOrderFragment, TimePickerDialog.OnTimeSetListener, int, int, boolean)**未定义
这是我的代码：
package info.androidhive.slidingmenu;
import java.util.Calendar;
import android.os.Bundle;
import android.app.DatePickerDialog;
import android.app.Dialog;
import android.app.Fragment;
import android.app.TimePickerDialog;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.DatePicker;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.TimePicker;
public class OrderTypeGeneralOrderFragment extends Fragment{
private EditText subjectTextBox;
private int currentYear;
private int currentMonth;
private int currentDay;
static final int DATE_DIALOG_ID = 0;
static final int TIME_DIALOG_ID = 1;
int hour;
int minute;
private Button btDate;
private Button btTime;
private TextView timeDisplay;
private TextView dateDisplay;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstancesState)
{
return inflater.inflate(R.layout.generalorderfragment, container, false);
}
@Override
public void onActivityCreated(Bundle savedInstanceState){
super.onActivityCreated(savedInstanceState);
Button btDate =(Button) getView().findViewById(R.id.btnDate);
btDate.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
showDialog(DATE_DIALOG_ID);
}
});
final Calendar c = Calendar.getInstance();
currentYear = c.get(Calendar.YEAR);
currentMonth = c.get(Calendar.MONTH);
currentDay = c.get(Calendar.DAY_OF_MONTH);
Button btTime = (Button) getView().findViewById(R.id.btnTime);
btTime.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
showDialog(TIME_DIALOG_ID);
}
});
final Calendar d = Calendar.getInstance();
hour = d.get(Calendar.HOUR_OF_DAY);
minute = d.get(Calendar.MINUTE);
TextView timeDisplay = (TextView) getView().findViewById(R.id.txtTime);
TextView dateDisplay = (TextView) getView().findViewById(R.id.txtDate);
EditText subjectTextBox = (EditText) getView().findViewById(R.id.subjectTextBoxId);
}
//--DATE PICKER--//
// Use the current date as the default date in the picker
protected Dialog onCreateDialog4(int id) {
switch (id) {
case DATE_DIALOG_ID:
return new DatePickerDialog(this, datetoperform, currentYear, currentMonth, currentDay);
case TIME_DIALOG_ID:
return new TimePickerDialog(this, timeDate, hour, minute, false);
}
return null;
}
private DatePickerDialog.OnDateSetListener datetoperform = new DatePickerDialog.OnDateSetListener() {
public void onDateSet(DatePicker view, int year, int month, int day) {
// if (c1.isChecked()) {
dateDisplay.setText("Order will be performed on: "
+ (month + 1) + "-" + day + "-" + year + ".");
// }
}
};
private TimePickerDialog.OnTimeSetListener timeDate = new TimePickerDialog.OnTimeSetListener() {
public void onTimeSet(TimePicker view, int hours, int minutes) {
timeDisplay.setText("on " + hours + ":"
+ minutes + ".");
}
};
/* public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.activity_main, menu);
return true;
}*/
//--//DATE PICKER--//
}
我在想......或许有可能把这部分放在
protected Dialog onCreateDialog4(int id) {
switch (id) {
case DATE_DIALOG_ID:
return new DatePickerDialog(this, datetoperform, currentYear, currentMonth, currentDay);
case TIME_DIALOG_ID:
return new TimePickerDialog(this, timeDate, hour, minute, false);
}
return null;
}
private DatePickerDialog.OnDateSetListener datetoperform = new DatePickerDialog.OnDateSetListener() {
public void onDateSet(DatePicker view, int year, int month, int day) {
// if (c1.isChecked()) {
dateDisplay.setText("Order will be performed on: "
+ (month + 1) + "-" + day + "-" + year + ".");
// }
}
};
private TimePickerDialog.OnTimeSetListener timeDate = new TimePickerDialog.OnTimeSetListener() {
public void onTimeSet(TimePicker view, int hours, int minutes) {
timeDisplay.setText("on " + hours + ":"
+ minutes + ".");
}
};
/* public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.activity_main, menu);
return true;
}*/
//--//DATE PICKER--//
}
调用此片段的活动内部。
如果可以的话......我将如何在这个片段中调用该部分？
答案 0 :(得分：3)
您需要获取Activity的句柄才能调用showDialog（）。尝试调用getActivity（）。showDialog（）
答案 1 :(得分：0)
谢谢..对话现在出现了：D
但
TextView timeDisplay =（TextView）getView（）。findViewById（R.id.txtTime）; TextView dateDisplay =（TextView）getView（）。findViewById（R.id.txtDate）;
不会显示所选的日期和时间。
我有我的活动：
protected Dialog onCreateDialog(int id) {
switch (id) {
case DATE_DIALOG_ID:
OnDateSetListener datetoperform = null;// i had to initialize this because datetoperform is in the fragment
return new DatePickerDialog(this, datetoperform, currentYear,currentMonth, currentDay);
case TIME_DIALOG_ID2:
OnTimeSetListener timeDate = null;// i had to initialize this because timeDate is in the fragment
return new TimePickerDialog(this, timeDate, hour, minute, false);
case DIALOG_CHANGE_BACKGROUND:
AlertDialog.Builder builder = new AlertDialog.Builder(mContext);
builder.setSingleChoiceItems(mBgNames, mChangeBGItem, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
mChangeBGItem = which;
Bitmap bm = null;
switch(which) {
case 0:
bm = BitmapFactory.decodeResource(mContext.getResources(), R.drawable.letter_bg_grass);
break;
case 1:
bm = BitmapFactory.decodeResource(mContext.getResources(), R.drawable.letter_bg_present);
break;
case 2:
bm = BitmapFactory.decodeResource(mContext.getResources(), R.drawable.letter_bg);
break;
case 3:
mSCanvas.setBGColor(0x00000000);
break;
}
if(bm != null) {
mSCanvas.setBGImage(bm);
}
removeDialog(DIALOG_CHANGE_BACKGROUND);
}
});
return builder.create();
}
return super.onCreateDialog(id);
OnDateSetListener datetoperform = null;
我必须初始化这个因为datetoperform在片段中
OnDateSetListener timeDate = null;
我必须初始化这个因为timeDate在片段中
在Fragement中：
public DatePickerDialog.OnDateSetListener datetoperform = new DatePickerDialog.OnDateSetListener() {
public void onDateSet(DatePicker view, int year, int month, int day) {
// if (c1.isChecked()) {
dateDisplay.setText("Order will be performed on: "
+ (month) + "-" + day + "-" + year + ".");
// }
}
};
public TimePickerDialog.OnTimeSetListener timeDate = new TimePickerDialog.OnTimeSetListener() {
public void onTimeSet(TimePicker view, int hours, int minutes) {
timeDisplay.setText("on " + hours + ":"
+ minutes + ".");
}
};