这个我一点都不懂。

听天书。

天呐。这代码写这么详细的，我以为顶多就是个片段

绝对运行不起来。

哎，看不懂。

为什么第一个导入的前面没有这个？

require

Import

你们可以试一下这个能不能用。

Require

import

import android.app.AlarmManager;

import android.app.PendingIntent;

import android.content.Context;

import android.content.Intent;

import android.media.Ringtone;

import android.media.RingtoneManager;

import android.net.Uri;

import android.os.Build;

import android.os.Bundle;

import android.os.Vibrator;

import android.os.Vibrator;

import android.speech.tts.TextToSpeech;

import android.support.v7.app.AppCompatActivity;

import android.view.View;

import android.widget.Button;

import android.widget.TimePicker;

import java.util.Calendar;

public class MainActivity extends AppCompatActivity {

private TimePicker timePicker;

private Button setAlarmButton;

private TextToSpeech textToSpeech;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

timePicker = findViewById(R.id.timePicker);

setAlarmButton = findViewById(R.id.setAlarmButton);

textToSpeech = new TextToSpeech(this, new TextToSpeech.OnInitListener() {

@Override

public void onInit(int status) {

if (status != TextToSpeech.ERROR) {

textToSpeech.setLanguage(Locale.CHINESE);

}

}

});

setAlarmButton.setOnClickListener(new View.OnClickListener() {

setAlarmButton.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View v) {

setAlarm();

}

});

}

private void setAlarm() {

int hour = timePicker.getCurrentHour();

int minute = timePicker.getCurrentMinute();

Calendar calendar = Calendar.getInstance();

calendar.set(Calendar.HOUR_OF_DAY, hour);

calendar.set(Calendar.MINUTE, minute);

calendar.set(Calendar.SECOND, 0);

calendar.set(Calendar.SECOND, 0);

AlarmManager alarmManager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);

Intent intent = new Intent(this, AlarmReceiver.class);

PendingIntent pendingIntent = PendingIntent.getBroadcast(this, 0, intent, 0);

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {

alarmManager.setExactAndAllowWhileIdle(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(), pendingIntent);

} else if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {

alarmManager.setExact(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(), pendingIntent);

} else {

alarmManager.set(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(), pendingIntent);

}

}

}

public class AlarmReceiver extends BroadcastReceiver {

@Override

public void onReceive(Context context, Intent intent) {

String message = "时间到了！";

textToSpeech.speak(message, TextToSpeech.QUEUE_FLUSH, null, null);

Uri notification = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_ALARM);

Ringtone r = RingtoneManager.getRingtone(context, notification);

r.play();

Vibrator vibrator = (Vibrator) context.getSystemService(Context.VIBRATOR_SERVICE);

vibrator.vibrate(2000)

记住这里面双引号下的我没有加，你们得自己去看在后面的。需要导入的名字那里填双引号，还有点号，还有星。