在同一個類/活動中使用TimePicker，DatePicker和AlertDialog

Question

我有一個Activity中包含3個按鈕。第一個按鈕用於使用EditText啓動自定義AlertDialog。第二個按鈕需要打開DatePicker。第三個按鈕需要打開一個TimePicker。我有第一個按鈕工作得很好，而且我有第二個按鈕需要的代碼，但唯一能讓代碼工作的方法是創建一個不同的活動。

我需要做什麼才能在同一活動中實現所有這三件事？是否有可能，我對這些東西都很陌生，所以任何基本的高級建議都會很棒！

下面是三個按鈕的活動代碼，所有這些按鈕都在相應的XML文件中聲明。這是我目前擁有的代碼，這意味着只有在AlertDialog的代碼工作正常：

package com.example.test_project; 

import java.util.Calendar; 

import android.app.Activity; 
import android.app.AlertDialog; 
import android.app.DatePickerDialog; 
import android.app.Dialog; 
import android.content.DialogInterface; 
import android.content.Intent; 
import android.os.Bundle; 
import android.view.Menu; 
import android.view.View; 
import android.widget.Button; 
import android.widget.DatePicker; 
import android.widget.EditText; 
import android.widget.TextView; 


public class NewWorkout extends Activity { 

@Override 
protected void onCreate(Bundle onSaveInstanceState) { 
    super.onCreate(onSaveInstanceState); 
    setContentView(R.layout.activity_new_workout); 
} 

@Override 
public boolean onCreateOptionsMenu(Menu menu) { 
    // Inflate the menu; this adds items to the action bar if it is present. 
    getMenuInflater().inflate(R.menu.new_workout, menu); 
    return true; 
} 
public void timeOfWorkout(View view){ 
    Intent intent = new Intent(this, TimePickerFragment.class); 
    startActivity(intent); 
} 


    int mYear; 
    int mMonth; 
    int mDay; 

    TextView mDateDisplay; 


    final int DATE_DIALOG_ID = 0; 

    public void onCreate1(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_new_workout); 

     mDateDisplay = (TextView) findViewById(R.id.timeOfWorkoutTextView);   
     Button button = (Button) findViewById(R.id.dateOfWorkoutButton); 

     button.setOnClickListener(new View.OnClickListener() { 
      public void onClick(View v) { 
       // get the current date 
       final Calendar c = Calendar.getInstance(); 
       mYear = c.get(Calendar.YEAR); 
       mMonth = c.get(Calendar.MONTH); 
       mDay = c.get(Calendar.DAY_OF_MONTH); 

       // display the current date 
       updateDisplay(); 
      } 
      }); 
       DatePickerDialog.OnDateSetListener mDateSetListener = 
         new DatePickerDialog.OnDateSetListener() { 
          public void onDateSet(DatePicker view, int year, 
                int monthOfYear, int dayOfMonth) { 
           mYear = year; 
           mMonth = monthOfYear; 
           mDay = dayOfMonth; 
           updateDisplay(); 






          } 
       }; 
    } 








private void updateDisplay() { 
    this.mDateDisplay.setText(
       new StringBuilder() 
         // Month is 0 based so add 1 
         .append(mMonth + 1).append("-") 
         .append(mDay).append("-") 
         .append(mYear).append(" ")); 



} 

public void nameOfWorkout(View view){ 
    AlertDialog.Builder alert = new AlertDialog.Builder(this); 

    alert.setTitle("Enter a Name for This Workout"); 

    // Set an EditText view to get user input 
    final EditText input = new EditText(this); 
    alert.setView(input); 

    alert.setPositiveButton("Ok", new DialogInterface.OnClickListener() { 
    public void onClick(DialogInterface dialog, int whichButton) { 
     String value = input.getText().toString(); 
     TextView edit = (TextView) findViewById(R.id.nameOfWorkoutTextView); 
     edit.setText(value); 
     } 
    }); 

    alert.setNegativeButton("Cancel", new DialogInterface.OnClickListener() { 
     public void onClick(DialogInterface dialog, int whichButton) { 
     // Canceled. 
     } 
    }); 

    alert.show(); 

} 

}

Answer 1

你應該執行的DatePicker和使用對話片段TimerPicker。

下面是this documentation:

公共靜態類TimePickerFragment一些樣品延伸DialogFragment 實現TimePickerDialog.OnTimeSetListener {

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

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

public void onTimeSet(TimePicker view, int hourOfDay, int minute) { 
    // Do something with the time chosen by the user 
} 

}

你可以做一個時間選擇器像這樣離開你的按鈕：

in your xml：

<Button 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:text="@string/pick_time" 
    android:onClick="showTimePickerDialog" /> 

然後在你的活動：

public void showTimePickerDialog(View v) { 
    FragmentManager manager = getSupportFragmentManager(); 
    DialogFragment timePickerFragment = new TimePickerFragment(); 
    timePickerFragment.show(manager, "timePicker"); 
} 

Answer 2

嘗試的日期和時間選擇器對話框此代碼

@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_event_details_list); 
    calendarDataInit(); 
    initViews(); 

} 


private void calendarDataInit() { 

    mYear = c.get(Calendar.YEAR); 
    mMonth = c.get(Calendar.MONTH); 
    mDay = c.get(Calendar.DAY_OF_MONTH); 
    mHour = c.get(Calendar.HOUR_OF_DAY); 
    mMinute = c.get(Calendar.MINUTE); 

} 


private void initViews() { 

    imgViewDatePicker = (ImageView) findViewById(R.id.imgViewDatePicker); 
    imgViewTimePicker = (ImageView) findViewById(R.id.imgViewTimePicker); 
    imgViewDatePicker.setOnClickListener(this); 
    imgViewTimePicker.setOnClickListener(this);  

@Override 
public void onClick(View v) { 

    switch (v.getId()) { 
    case R.id.imgViewDatePicker: 
     showDialog(DATE_DIALOG_ID); 
     break; 

    case R.id.imgViewTimePicker: 
     showDialog(TIME_DIALOG_ID); 
     break; 




private DatePickerDialog.OnDateSetListener mDateSetListener = 
     new DatePickerDialog.OnDateSetListener() { 

    public void onDateSet(DatePicker view, int year, 
      int monthOfYear, int dayOfMonth) { 
     mYear = year; 
     mMonth = monthOfYear; 
     mDay = dayOfMonth; 
     updateDate(); 
    } 

    private void updateDate() { 
     adapter.resetData(); 
     StringBuilder dateEvent = new StringBuilder().append(mYear).append("-").append(padMonth(mMonth + 1)) 
       .append("-") 
       .append(mDay); 
     editTxtDtae.setText(dateEvent); 
     editTxtDtae.requestFocus(); 


    } 
}; 

private static String padMonth(int c) { 
    if (c >= 10) 
     return String.valueOf(c); 
    else 
     return "0" + String.valueOf(c); 
} 


// Timepicker dialog generation 
private TimePickerDialog.OnTimeSetListener mTimeSetListener = 
     new TimePickerDialog.OnTimeSetListener() { 
    public void onTimeSet(TimePicker view, int hourOfDay, int minute) { 
     mHour = hourOfDay; 
     mMinute = minute; 
     updatetime(); 
    } 

    private void updatetime() { 

     adapter.resetData(); 

     String am_pm; 

     if(mHour > 12) { 
      am_pm = "PM"; 
      mHour = mHour - 12; 
     } else { 
      am_pm = "AM"; 
     } 

     timeEvent = new StringBuilder().append(mHour) 
       .append(":").append(mMinute).append(am_pm); 
     editTxtTime.setText(timeEvent); 
    } 


}; 
private static String pad(int c) { 
    if (c >= 10) 
     return String.valueOf(c); 
    else 
     return "0" + String.valueOf(c); 
} 

@Override 
protected Dialog onCreateDialog(int id) { 
    switch (id) { 
    case DATE_DIALOG_ID: 
     return new DatePickerDialog(this, 
       mDateSetListener, 
       mYear, mMonth, mDay); 


    case TIME_DIALOG_ID: 
     return new TimePickerDialog(this, 
       mTimeSetListener, mHour, mMinute, false); 

    } 
    return null; 
} 
    }