我正在开发一个在指定时间发送 SMS 的 Android 应用程序。但是，当我检查是否在日期上进行验证以检查其是否为未来日期时，应用程序会停止。当我在评论中激活代码时会弹出错误。
package com.example.sked;
import java.util.Calendar;
import java.util.concurrent.TimeUnit;
import android.app.Activity;
import android.app.AlarmManager;
import android.app.AlertDialog;
import android.app.PendingIntent;
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.TimePicker;
import android.widget.Toast;
public class ScheduleActivity extends Activity
{
private PendingIntent pendingIntent;
@Override
protected void onCreate(Bundle savedInstanceState)
{
setContentView(R.layout.activity_schedule);
super.onCreate(savedInstanceState);
Calendar cal=Calendar.getInstance();
final int year_set=cal.get(Calendar.YEAR);
final int month_set=cal.get(Calendar.MONTH);
final int day_set=cal.get(Calendar.DAY_OF_MONTH);
final int hr_set=cal.get(Calendar.HOUR);
final int min_set=cal.get(Calendar.MINUTE);
final DatePicker dp_c = (DatePicker) findViewById(R.id.datePicker1);
final TimePicker tp_c = (TimePicker) findViewById(R.id.timePicker1);
dp_c.updateDate(year_set, month_set, day_set); //Setting current date in date picker //
tp_c.setCurrentHour(hr_set); //Setting current time in time picker //
tp_c.setCurrentMinute(min_set);
//For Scheduling a message//
final Button view = (Button) findViewById(R.id.set_message);
{
view.setOnClickListener(new View.OnClickListener()
{
@Override
public void onClick(View v)
{
// Processing the input values from the user//
EditText text = (EditText)findViewById(R.id.reci_number);
final String phno= text .getText().toString();
EditText text1 = (EditText)findViewById(R.id.message);
final String msg= text1.getText().toString();
if(phno.length()==10)//Checking length of the mobile number//
{
if(msg.length()<=160 && msg.length()>0) //Checking length of the message//
{
DatePicker dp = (DatePicker) findViewById(R.id.datePicker1);//Getting selected date values//
int day = dp.getDayOfMonth();
int month = dp.getMonth() + 1;
int year = dp.getYear();
TimePicker tp=(TimePicker) findViewById(R.id.timePicker1);//Getting selected time values//
int hours= tp.getCurrentHour();
int minutes= tp.getCurrentMinute();
Calendar cal=Calendar.getInstance();//Getting Current date values//
final int year_curr=cal.get(Calendar.YEAR);
final int month_curr=cal.get(Calendar.MONTH);
int day_curr=cal.get(Calendar.DAY_OF_MONTH);
final int hr_curr=cal.get(Calendar.HOUR);//Getting Current time values//
final int min_curr=cal.get(Calendar.MINUTE);
//String curr_values = year_curr + "-" + month_curr + "-" +day_curr+ "-"+ hr_curr + "-" +min_curr;
//String sel_values = year + "-" + month + "-" +day+ "-"+ hours + "-" +minutes;
//DateFormat df = new SimpleDateFormat("YY-MM-HH-mm-ss", Locale.ENGLISH);
//try {
//if (df.parse(sel_values).after(df.parse(curr_values)))//Checking if its the future date//
//{
Intent myIntent = new Intent(ScheduleActivity.this, MyAlarmService.class);
Bundle bundle = new Bundle();
bundle.putCharSequence("extraSmsNumber", phno);
bundle.putCharSequence("extraSmsText", msg);
myIntent.putExtras(bundle);
pendingIntent = PendingIntent.getService(ScheduleActivity.this, 0, myIntent, 0);
int year_act=year-year_curr;
int year_act_indays=year_act*365;
long year_act_mil=TimeUnit.MILLISECONDS.convert(year_act_indays, TimeUnit.DAYS);
int mon_act=month-month_curr;
int mon_act_indays=mon_act*30;
long mon_act_mil=TimeUnit.MILLISECONDS.convert(mon_act_indays, TimeUnit.DAYS);
int day_act=day-day_curr;
long day_act_mil=TimeUnit.MILLISECONDS.convert(day_act, TimeUnit.DAYS);
int hr_act=hours-hr_curr;
long hr_act_mil=TimeUnit.MILLISECONDS.convert(hr_act, TimeUnit.HOURS);
int min_act=minutes-min_curr;
long min_act_mil=TimeUnit.MILLISECONDS.convert(min_act, TimeUnit.MINUTES);
long elapsedtimer_act= year_act_mil+mon_act_mil+day_act_mil+hr_act_mil+min_act_mil;
AlarmManager alarmManager = (AlarmManager)getSystemService(ALARM_SERVICE);
alarmManager.set(AlarmManager.RTC_WAKEUP,elapsedtimer_act, pendingIntent);
final AlertDialog.Builder dlgAlert = new AlertDialog.Builder(ScheduleActivity.this, 0);
//set the dialog
dlgAlert.setMessage("Message successfully scheduled at the specified time & date");
dlgAlert.setTitle("Success");
dlgAlert.setPositiveButton("OK", null);
dlgAlert.setCancelable(true);
dlgAlert.create().show();
//}
//else
//{}
//} catch (ParseException e) {
// TODO Auto-generated catch block
//Toast.makeText(getBaseContext(),
//"Please check the entered date...And enter future time. ",Toast.LENGTH_SHORT).show();
// e.printStackTrace();
//}
}
else
{
Toast.makeText(getBaseContext(),
"Message too long or too short .... cannot send ... :( ",Toast.LENGTH_SHORT).show();
}
}
else
{
Toast.makeText(getBaseContext(),
"Check the number Entered",Toast.LENGTH_SHORT).show();
}
}
}
);
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu)
{
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.schedule, menu);
return true;
}
}
日志输出：
09-12 11:53:11.259: D/InputEventConsistencyVerifier(779): KeyEvent: ACTION_UP but key was not down.
09-12 11:53:11.259: D/InputEventConsistencyVerifier(779): in android.widget.EditText{41764990 VFED..CL .F....I. 16,89-464,289 #7f08000d app:id/message}
09-12 11:53:11.259: D/InputEventConsistencyVerifier(779): 0: sent at 148929000000, KeyEvent { action=ACTION_UP, keyCode=KEYCODE_TAB, scanCode=15, metaState=0, flags=0x8, repeatCount=0, eventTime=148929, downTime=148829, deviceId=0, source=0x101 }
09-12 11:53:12.978: D/dalvikvm(779): GC_FOR_ALLOC freed 225K, 9% free 3234K/3520K, paused 33ms, total 39ms
09-12 11:53:21.018: D/AndroidRuntime(779): Shutting down VM
09-12 11:53:21.018: W/dalvikvm(779): threadid=1: thread exiting with uncaught exception (group=0x41465700)
09-12 11:53:21.038: E/AndroidRuntime(779): FATAL EXCEPTION: main
09-12 11:53:21.038: E/AndroidRuntime(779): java.lang.IllegalArgumentException: Unknown pattern character 'Y'
09-12 11:53:21.038: E/AndroidRuntime(779): at java.text.SimpleDateFormat.validateFormat(SimpleDateFormat.java:264)
09-12 11:53:21.038: E/AndroidRuntime(779): at java.text.SimpleDateFormat.validatePattern(SimpleDateFormat.java:312)
09-12 11:53:21.038: E/AndroidRuntime(779): at java.text.SimpleDateFormat.<init>(SimpleDateFormat.java:365)
09-12 11:53:21.038: E/AndroidRuntime(779): at com.example.sked.ScheduleActivity$1.onClick(ScheduleActivity.java:102)
09-12 11:53:21.038: E/AndroidRuntime(779): at android.view.View.performClick(View.java:4240)
09-12 11:53:21.038: E/AndroidRuntime(779): at android.view.View$PerformClick.run(View.java:17721)
09-12 11:53:21.038: E/AndroidRuntime(779): at android.os.Handler.handleCallback(Handler.java:730)
09-12 11:53:21.038: E/AndroidRuntime(779): at android.os.Handler.dispatchMessage(Handler.java:92)
09-12 11:53:21.038: E/AndroidRuntime(779): at android.os.Looper.loop(Looper.java:137)
09-12 11:53:21.038: E/AndroidRuntime(779): at android.app.ActivityThread.main(ActivityThread.java:5103)
09-12 11:53:21.038: E/AndroidRuntime(779): at java.lang.reflect.Method.invokeNative(Native Method)
09-12 11:53:21.038: E/AndroidRuntime(779): at java.lang.reflect.Method.invoke(Method.java:525)
09-12 11:53:21.038: E/AndroidRuntime(779): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737)
09-12 11:53:21.038: E/AndroidRuntime(779): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
09-12 11:53:21.038: E/AndroidRuntime(779): at dalvik.system.NativeStart.main(Native Method)
09-12 11:53:24.928: W/ResourceType(827): Skipping entry 0x106000b in package table 0 because it is not complex!
09-12 11:53:25.608: D/dalvikvm(827): GC_FOR_ALLOC freed 78K, 5% free 2941K/3080K, paused 55ms, total 66ms
09-12 11:53:25.848: D/gralloc_goldfish(827): Emulator without GPU emulation detected.
09-12 11:53:26.348: I/Choreographer(827): Skipped 48 frames! The application may be doing too much work on its main thread.