我正在尝试构建一个应用程序，询问用户两个必须设置警报的特定时间！该应用程序还会向用户询问一个间隔[例如，如果用户将时间间隔设置为10分钟，并且时间是9:00和10:00，则该应用程序将每10分钟发出一次警报，黑白9和10。
该应用的问题是，时间到9:10时该应用就会崩溃.. 我的MainActivity.java文件是
package com.example.android.alarmfun;
import android.app.AlarmManager;
import android.app.PendingIntent;
import android.content.Intent;
import android.os.Bundle;
import android.os.SystemClock;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.View;
import android.widget.EditText;
import android.widget.Toast;
import java.sql.Time;
import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
public class MainActivity extends AppCompatActivity {
EditText initTimeEditText, finalTimeEditText, intervalTimeEditText;
AlarmManager alarmManager;
int requestCode = 0;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
initTimeEditText = findViewById(R.id.initTimeEditText);
finalTimeEditText = findViewById(R.id.finalTimeEditText);
intervalTimeEditText = findViewById(R.id.intervalTimeEditText);
alarmManager = (AlarmManager) getSystemService(ALARM_SERVICE);
}
public void setAlarm(View view) throws ParseException {
Toast.makeText(MainActivity.this, "Alarm is On ", Toast.LENGTH_SHORT).show();
DateFormat formatter = new SimpleDateFormat("HH:mm");
String init_timeStamp = initTimeEditText.getText().toString();
Time init_time = new Time(formatter.parse(init_timeStamp).getTime());
String init_time_format = init_time.getHours() + ":" + init_time.getMinutes();
String final_timeStamp = finalTimeEditText.getText().toString();
Time final_time = new Time(formatter.parse(final_timeStamp).getTime());
String final_time_format = final_time.getHours() + ":" + final_time.getMinutes();
Log.i("Init Time", init_time_format);
Log.i("Final Time", final_time_format);
String intervals = intervalTimeEditText.getText().toString();
int alarm_init_time = toMins(init_time_format);
int alarm_final_time = toMins(final_time_format);
int alarm_interval = toMins(intervals);
Log.i("Alarm Init Time ", String.valueOf(alarm_init_time));
Log.i("Alarm final time ", String.valueOf(alarm_final_time));
Log.i("Alarm Interval ", String.valueOf(alarm_interval));
ArrayList<PendingIntent> intentArray = new ArrayList<PendingIntent>();
for (int i = alarm_init_time; i < alarm_final_time; ++i) {
Intent intent = new Intent(MainActivity.this, AlarmReciever.class);
PendingIntent pendingIntent = PendingIntent.getBroadcast(MainActivity.this, requestCode, intent, 0);
alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
SystemClock.elapsedRealtime() + alarm_interval,
pendingIntent);
intentArray.add(pendingIntent);
requestCode = requestCode + 1;
alarm_init_time += alarm_interval;
}
}
private static int toMins(String s) {
String[] hourMin = s.split(":");
int hour = Integer.parseInt(hourMin[0]);
int mins = Integer.parseInt(hourMin[1]);
int hoursInMins = hour * 60;
return (hoursInMins + mins) * 60000;
}
}
我的AlarmReciever.java文件是
package com.example.android.alarmfun;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.widget.Toast;
public class AlarmReciever extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
Toast.makeText(context, "Yay ! An alarm !", Toast.LENGTH_SHORT).show();
}
}
我的activity_main.xml文件是
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<EditText
android:id="@+id/initTimeEditText"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginEnd="8dp"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:ems="10"
android:hint="Enter the Initial time in HH:MM format"
android:inputType="textPersonName"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.502"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.034" />
<EditText
android:id="@+id/finalTimeEditText"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginEnd="8dp"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:ems="10"
android:hint="Enter the final time In HH:MM format"
android:inputType="textPersonName"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/initTimeEditText" />
<EditText
android:id="@+id/intervalTimeEditText"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginEnd="8dp"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:ems="10"
android:hint="Enter the interval b/w alarm"
android:inputType="textPersonName"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/finalTimeEditText" />
<Button
android:id="@+id/setAlarmButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginEnd="8dp"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:onClick="setAlarm"
android:text="SET ALARM"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/intervalTimeEditText" />
</android.support.constraint.ConstraintLayout>
我的AndroidManifest.xml文件
?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.android.alarmfun">
<uses-permission android:name="android.permission.SET_ALARM">
</uses-permission>
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<receiver android:name=".AlarmReciever">
</receiver>
</application>
</manifest>
我的logcat文件是
07-06 21:36:31.176 25764-25764/com.example.android.alarmfun I/Init Time: 9:37
07-06 21：36：31.176 25764-25764 / com.example.android.alarmfun I / Final时间：9:40 07-06 21：36：31.176 25764-25764 / com.example.android.alarmfun I / Alarm Init时间：34620000 07-06 21：36：31.176 25764-25764 / com.example.android.alarmfun I / Alarm最终时间：34800000 07-06 21：36：31.176 25764-25764 / com.example.android.alarmfun I / Alarm时间间隔：60000 07-06 21：37：30.077 25764-25775 / com.example.android.alarmfun I / zygote：后台并发复制GC已释放822（85KB）AllocSpace对象，0（0B）LOS对象，49％可用空间，4MB / 8MB，暂停563us共134.561ms 07-06 21：37：31.174 25764-25770 / com.example.android.alarmfun I / zygote：Thread [3，tid = 25770，WaitingInMainSignalCatcherLoop，Thread * = 0xa335ac00，peer = 0x13140bc0，“ Signal Catcher”]：信号3 07-06 21：37：31.210 25764-25770 / com.example.android.alarmfun I / zygote：将堆栈跟踪写入'/data/anr/traces.txt' 07-06 21：38：12.117 25764-25775 / com.example.android.alarmfun I / zygote：后台并发复制GC已释放830（53KB）AllocSpace对象，0（0B）LOS对象，49％可用空间，5MB / 11MB，暂停543us共171.169ms 07-06-21：38：26.130 25764-25775 / com.example.android.alarmfun I / zygote：后台并发复制GC释放了825（54KB）AllocSpace对象，0（0B）个LOS对象，49％的可用空间，5MB / 11MB，暂停560us总174.438ms 07-06 21：38：54.203 25764-25775 / com.example.android.alarmfun I / zygote：后台并发复制GC已释放847（53KB）AllocSpace对象，0（0B）LOS对象，46％可用空间，6MB / 12MB，暂停719us共130.046ms 07-06 21：39：11.342 25764-25764 / com.example.android.alarmfun E / AndroidRuntime：FATAL EXCEPTION：main 流程：com.example.android.alarmfun，PID：25764 DeadSystemException：系统死亡；较早的日志将指向根本原因
请帮帮忙！