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利用Android应用框架提供的DatePicker（日期选择器）和TimePicker（时间选择器），实现日期时间选择器。

Dialog的Content布局文件（date_time_dialog.xml）：

package com.easipass.test;    import java.util.Calendar;    import android.app.Activity; import android.app.AlertDialog; import android.app.Dialog; import android.content.DialogInterface; import android.os.Bundle; import android.text.InputType; import android.view.MotionEvent; import android.view.View; import android.widget.DatePicker; import android.widget.EditText; import android.widget.TimePicker;    /** * 功能描述：实现日期时间选择器 *  * @author android_ls */ public class DateTimeActivity extends Activity implements View.OnTouchListener {           private EditText etStartTime;        private EditText etEndTime;            @Override     public void onCreate(Bundle savedInstanceState) {         super.onCreate(savedInstanceState);         setContentView(R.layout.main);                    etStartTime = (EditText) this.findViewById(R.id.et_start_time);         etEndTime = (EditText) this.findViewById(R.id.et_end_time);                    etStartTime.setOnTouchListener(this);         etEndTime.setOnTouchListener(this);                }        @Override     public boolean onTouch(View v, MotionEvent event) {         if (event.getAction() == MotionEvent.ACTION_DOWN) {                AlertDialog.Builder builder = new AlertDialog.Builder(this);             View view = View.inflate(this, R.layout.date_time_dialog, null);             final DatePicker datePicker = (DatePicker) view.findViewById(R.id.date_picker);             final TimePicker timePicker = (android.widget.TimePicker) view.findViewById(R.id.time_picker);             builder.setView(view);                Calendar cal = Calendar.getInstance();             cal.setTimeInMillis(System.currentTimeMillis());             datePicker.init(cal.get(Calendar.YEAR), cal.get(Calendar.MONTH), cal.get(Calendar.DAY_OF_MONTH), null);                timePicker.setIs24HourView(true);             timePicker.setCurrentHour(cal.get(Calendar.HOUR_OF_DAY));             timePicker.setCurrentMinute(Calendar.MINUTE);                if (v.getId() == R.id.et_start_time) {                 final int inType = etStartTime.getInputType();                 etStartTime.setInputType(InputType.TYPE_NULL);                 etStartTime.onTouchEvent(event);                 etStartTime.setInputType(inType);                 etStartTime.setSelection(etStartTime.getText().length());                                    builder.setTitle("选取起始时间");                 builder.setPositiveButton("确  定", new DialogInterface.OnClickListener() {                        @Override                     public void onClick(DialogInterface dialog, int which) {                            StringBuffer sb = new StringBuffer();                         sb.append(String.format("%d-%02d-%02d",                                  datePicker.getYear(),                                  datePicker.getMonth() + 1,                                 datePicker.getDayOfMonth()));                         sb.append("  ");                         sb.append(timePicker.getCurrentHour())                         .append(":").append(timePicker.getCurrentMinute());                            etStartTime.setText(sb);                         etEndTime.requestFocus();                                                    dialog.cancel();                     }                 });                                } else if (v.getId() == R.id.et_end_time) {                 int inType = etEndTime.getInputType();                 etEndTime.setInputType(InputType.TYPE_NULL);                     etEndTime.onTouchEvent(event);                 etEndTime.setInputType(inType);                 etEndTime.setSelection(etEndTime.getText().length());                    builder.setTitle("选取结束时间");                 builder.setPositiveButton("确  定", new DialogInterface.OnClickListener() {                        @Override                     public void onClick(DialogInterface dialog, int which) {                            StringBuffer sb = new StringBuffer();                         sb.append(String.format("%d-%02d-%02d",                                  datePicker.getYear(),                                  datePicker.getMonth() + 1,                                  datePicker.getDayOfMonth()));                         sb.append("  ");                         sb.append(timePicker.getCurrentHour())                         .append(":").append(timePicker.getCurrentMinute());                         etEndTime.setText(sb);                                                    dialog.cancel();                     }                 });             }                            Dialog dialog = builder.create();             dialog.show();         }            return true;     }        }

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