创建计时器，以秒、分、小时、天为单位显示事件的剩余时间

Question

Hello I am trying to create a timer wherein it will take the date and time of the event that will happen and convert it into milliseconds and also it will take current time and then subtract the current time from the event time and will calculate the hour minutes seconds and days from it. What I want to do is display those values in a textview but as and when I try and set it in textview it stops working and gives error : - 
    03-25 17:06:03.166: E/AndroidRuntime(993): FATAL EXCEPTION: main
    03-25 17:06:03.166: E/AndroidRuntime(993): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.indianic.planivore/com.indianic.planivore.view.OnSelectingAnEventFromList}: android.content.res.Resources$NotFoundException: String resource ID #0x38
    03-25 17:06:03.166: E/AndroidRuntime(993):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2059)
    03-25 17:06:03.166: E/AndroidRuntime(993):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2084)
    03-25 17:06:03.166: E/AndroidRuntime(993):  at android.app.ActivityThread.access$600(ActivityThread.java:130)
    03-25 17:06:03.166: E/AndroidRuntime(993):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1195)
    03-25 17:06:03.166: E/AndroidRuntime(993):  at android.os.Handler.dispatchMessage(Handler.java:99)
    03-25 17:06:03.166: E/AndroidRuntime(993):  at android.os.Looper.loop(Looper.java:137)
    03-25 17:06:03.166: E/AndroidRuntime(993):  at android.app.ActivityThread.main(ActivityThread.java:4745)
    03-25 17:06:03.166: E/AndroidRuntime(993):  at java.lang.reflect.Method.invokeNative(Native Method)
    03-25 17:06:03.166: E/AndroidRuntime(993):  at java.lang.reflect.Method.invoke(Method.java:511)
    03-25 17:06:03.166: E/AndroidRuntime(993):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
    03-25 17:06:03.166: E/AndroidRuntime(993):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
    03-25 17:06:03.166: E/AndroidRuntime(993):  at dalvik.system.NativeStart.main(Native Method)
    03-25 17:06:03.166: E/AndroidRuntime(993): Caused by: android.content.res.Resources$NotFoundException: String resource ID #0x38
    03-25 17:06:03.166: E/AndroidRuntime(993):  at android.content.res.Resources.getText(Resources.java:229)
    03-25 17:06:03.166: E/AndroidRuntime(993):  at android.widget.TextView.setText(TextView.java:3620)
    03-25 17:06:03.166: E/AndroidRuntime(993):  at com.indianic.planivore.view.OnSelectingAnEventFromList.onCreate(OnSelectingAnEventFromList.java:97)
    03-25 17:06:03.166: E/AndroidRuntime(993):  at android.app.Activity.performCreate(Activity.java:5008)
    03-25 17:06:03.166: E/AndroidRuntime(993):  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1079)
    03-25 17:06:03.166: E/AndroidRuntime(993):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2023)
    03-25 17:06:03.166: E/AndroidRuntime(993):  ... 11 more

我的布局代码是:-

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="#B7B1B1" >
    <ImageView
        android:id="@+id/imageOfAnEventAfterSelection"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:contentDescription="@string/imageViewOfAnEvent"
        android:src="@drawable/img_location_image" />
    <ImageView
        android:id="@+id/shareTheEvent"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignBottom="@+id/imageOfAnEventAfterSelection"
        android:layout_alignParentLeft="true"
        android:layout_marginBottom="2dp"
        android:layout_marginLeft="10dp"
        android:contentDescription="@string/shareOnSocialNetwork"
        android:src="@drawable/ic_shareicon" />
    <ImageView
        android:id="@+id/getSomeInformationOfEvent"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignBottom="@+id/imageOfAnEventAfterSelection"
        android:layout_marginBottom="2dp"
        android:layout_marginLeft="5dp"
        android:layout_toRightOf="@+id/shareTheEvent"
        android:contentDescription="@string/getSomeInformation"
        android:src="@drawable/ic_information" />
    <ImageView
        android:id="@+id/setItToTheFavouriteIcon"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignBottom="@+id/imageOfAnEventAfterSelection"
        android:layout_marginBottom="2dp"
        android:layout_marginLeft="5dp"
        android:layout_toRightOf="@+id/getSomeInformationOfEvent"
        android:contentDescription="@string/favouriteIconbactch"
        android:src="@drawable/ic_starbatchicon" />
    <LinearLayout
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_below="@+id/imageOfAnEventAfterSelection"
        android:layout_margin="5dp"
        android:background="@drawable/bg_clock"
        android:baselineAligned="false"
        android:orientation="horizontal"
        android:weightSum="4" >
        <RelativeLayout
            android:layout_width="0dp"
            android:layout_height="match_parent"
            android:layout_weight="1" >
            <ImageView
                android:id="@+id/imgCollenDays"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_alignParentRight="true"
                android:layout_marginTop="20dp"
                android:contentDescription="@string/collonSign"
                android:src="@drawable/collen" />
            <TextView
                android:id="@+id/numberOfDays"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_alignParentRight="true"
                android:layout_marginRight="20dp"
                android:layout_marginTop="10dp"
                android:text="@string/defaultNull"
                android:textColor="#E50303"
                android:textSize="30sp" />
            <TextView
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_below="@+id/imgCollenDays"
                android:layout_marginTop="10dp"
                android:gravity="center"
                android:text="@string/days"
                android:textColor="#05660F" />
        </RelativeLayout>
        <RelativeLayout
            android:layout_width="0dp"
            android:layout_height="match_parent"
            android:layout_weight="1" >
            <ImageView
                android:id="@+id/imgCollenHours"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_alignParentRight="true"
                android:layout_marginTop="20dp"
                android:contentDescription="@string/collonSign"
                android:src="@drawable/collen" />
            <TextView
                android:id="@+id/numberOfHours"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_alignParentRight="true"
                android:layout_marginRight="20dp"
                android:layout_marginTop="10dp"
                android:text="@string/defaultNull"
                android:textColor="#E50303"
                android:textSize="30sp" />
            <TextView
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_below="@+id/imgCollenHours"
                android:layout_marginTop="10dp"
                android:gravity="center"
                android:text="@string/hours"
                android:textColor="#05660F" />
        </RelativeLayout>
        <RelativeLayout
            android:layout_width="0dp"
            android:layout_height="match_parent"
            android:layout_weight="1" >
            <ImageView
                android:id="@+id/imgCollenMinutes"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_alignParentRight="true"
                android:layout_marginTop="20dp"
                android:contentDescription="@string/collonSign"
                android:src="@drawable/collen" />
            <TextView
                android:id="@+id/numberOfMinutes"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_alignParentRight="true"
                android:layout_marginRight="20dp"
                android:layout_marginTop="10dp"
                android:text="@string/defaultNull"
                android:textColor="#E50303"
                android:textSize="30sp" />
            <TextView
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_below="@+id/imgCollenMinutes"
                android:layout_marginTop="10dp"
                android:gravity="center"
                android:text="@string/minutes"
                android:textColor="#05660F" />
        </RelativeLayout>
        <RelativeLayout
            android:layout_width="0dp"
            android:layout_height="match_parent"
            android:layout_weight="1" >
            <TextView
                android:id="@+id/numberOfSeconds"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_alignParentRight="true"
                android:layout_marginRight="20dp"
                android:layout_marginTop="10dp"
                android:text="@string/defaultNull"
                android:textColor="#E50303"
                android:textSize="30sp" />
            <TextView
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_below="@+id/numberOfSeconds"
                android:layout_marginTop="2dp"
                android:gravity="center"
                android:text="@string/seconds"
                android:textColor="#05660F" />
        </RelativeLayout>
    </LinearLayout>
    <EditText 
        android:id="@+id/chatEditText"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:inputType="text"
        android:layout_alignParentBottom="true"
        android:hint="@string/EventTextView"/>
</RelativeLayout>

与相同的Java文件如下所示。我也曾尝试过片段，但它不工作，我在哪里出错了，任何帮助，任何尝试都是欢迎的，无论是对还是错，但我会尝试任何想法:-

package com.indianic.planivore.view;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;
import android.widget.Toast;
import com.indianic.planivore.R;
@SuppressLint("SimpleDateFormat")
public class OnSelectingAnEventFromList extends Activity {
    String date;
    SimpleDateFormat dateFormat = new SimpleDateFormat("dd-MM-yyyy");
    SimpleDateFormat time = new SimpleDateFormat("hh:mm");
    Date eventDate = null;
    Date eventAdditionalTime = null;
    String getEventTime, getEventDate;
    long milliSecondFromDate, milliSecondFromTime, totalmillisecond,
            currentmilliseconds;
    long timeleftinmilliseconds;
    int seconds, minutes, hours, days, weeks;
    TextView tv_days, tv_hour, tv_minutes, tv_seconds;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);
        setContentView(R.layout.event_postselection_layout);
//  @Override
//  public View onCreateView(LayoutInflater inflater, ViewGroup container,
    //      Bundle savedInstanceState) {
        // TODO Auto-generated method stub
//      View v = inflater.inflate(R.layout.event_postselection_layout,
//              container, false);
        // Here getting findVievbyID of all the text view to set the time left.
        tv_days = (TextView) findViewById(R.id.numberOfDays);
        tv_hour = (TextView) findViewById(R.id.numberOfHours);
        tv_minutes = (TextView) findViewById(R.id.numberOfMinutes);
        tv_seconds = (TextView) findViewById(R.id.numberOfSeconds);
        Log.d("PRINTING THE DAYS", tv_days.getText().toString());
        Bundle getdata = getIntent().getExtras();
        getEventTime = getdata.getString("timeleftkey");
        getEventDate = getdata.getString("datekey");
        Log.d("kjgkjnbjnknlj", getEventDate + "   " + getEventTime);
        //tv_days.setText("YO");
        // Here I am doing is that the time that I am getting I am converting it
        // to milliseconds so I will add it to the millisecond of the date and
        // will display it in the time left.
        try {
            eventAdditionalTime = time.parse(getEventTime);
            milliSecondFromTime = eventAdditionalTime.getTime();
        } catch (Exception e1) {
            // TODO Auto-generated catch block
            e1.printStackTrace();
        }
        try {
            eventDate = dateFormat.parse(getEventDate);
            milliSecondFromDate = eventDate.getTime();
        } catch (Exception e) {
            // TODO: handle exception
        }
        totalmillisecond = milliSecondFromDate + milliSecondFromTime;
        Log.d("milliSecondFromDate", "" + milliSecondFromDate);
        Log.d("milliSecondFromTime", "" + milliSecondFromTime);
        Calendar cal = Calendar.getInstance();
        currentmilliseconds = cal.getTime().getTime();
        if (currentmilliseconds <= totalmillisecond) {
            while(currentmilliseconds <= totalmillisecond){
                timeleftinmilliseconds = totalmillisecond - currentmilliseconds;
                seconds = (int) (timeleftinmilliseconds / 1000);
                // This below will give me seconds left.
                minutes = seconds / 60;
                seconds = seconds - minutes * 60;
                tv_seconds.setText(seconds);
                // This below will give me minutes left.
                hours = minutes / 60;
                minutes = minutes - hours * 60;
                tv_minutes.setText(minutes);
                // This below will give me hours left.
                days = hours / 24;
                hours = hours - days * 24;
                tv_hour.setText(hours);
                // This below will give me days left.
                weeks = days / 7;
                days = days - weeks * 7;
                tv_days.setText(days);

            }
        } else {
            Toast.makeText(OnSelectingAnEventFromList.this, "LOL YOU MISSED IT", 5000).show();
        }
//      return v;
    }
}

Answer 1

你的整数秒、分、小时等被视为资源。settext()有两个签名，一个接受String，一个接受int来查找资源。这就是为什么你会得到错误:

Caused by: android.content.res.Resources$NotFoundException: String resource ID #0x38
03-25 17:06:03.166: E/AndroidRuntime(993):  at android.content.res.Resources.getText(Resources.java:229)

你必须将它们转换成像这样的字符串

String.valueOf(days);

更新

public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    final TextView tv = new TextView(this);
    setContentView(tv);
    int hoursToGo = 0;
    int minutesToGo = 0;
    int secondsToGo = 30;
    int millisToGo = secondsToGo*1000+minutesToGo*1000*60+hoursToGo*1000*60*60;
    new CountDownTimer(millisToGo,1000) {
        @Override
        public void onTick(long millis) {
            int seconds = (int) (millis / 1000) % 60 ;
            int minutes = (int) ((millis / (1000*60)) % 60);
            int hours   = (int) ((millis / (1000*60*60)) % 24);
            String text = String.format("%02d hours, %02d minutes, %02d seconds",hours,minutes,seconds);
            tv.setText(text);
        }
        @Override
        public void onFinish() {
            tv.setText("Kabooom");              
        }
    }.start();
}
}