gitProject/src/app/src/main/java/com/example/myapplication/CourseReminderActivity.java

package com.example.myapplication;

import android.app.Activity;
import android.content.Context;
import android.media.AudioAttributes;
import android.media.MediaPlayer;
import android.media.RingtoneManager;
import android.net.Uri;
import android.os.Bundle;
import android.os.VibrationEffect;
import android.os.Vibrator;
import android.view.View;
import android.view.Window;
import android.view.WindowManager;
import android.widget.TextView;

public class CourseReminderActivity extends Activity {
    
    private MediaPlayer mediaPlayer;
    private Vibrator vibrator;
    
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        
        // 设置为对话框样式
        requestWindowFeature(Window.FEATURE_NO_TITLE);
        setContentView(R.layout.activity_course_reminder);
        
        // 设置窗口属性
        Window window = getWindow();
        
        // 允许在锁屏上显示
        if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.O_MR1) {
            setShowWhenLocked(true);
            setTurnScreenOn(true);
            android.app.KeyguardManager keyguardManager = (android.app.KeyguardManager) getSystemService(Context.KEYGUARD_SERVICE);
            if (keyguardManager != null) {
                keyguardManager.requestDismissKeyguard(this, null);
            }
        } else {
            window.addFlags(
                WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED |
                WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD |
                WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON |
                WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON
            );
        }
        
        // 设置窗口在最顶层
        window.addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
        
        // 设置窗口类型（Android 8.0+）
        if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.O) {
            window.setType(WindowManager.LayoutParams.TYPE_APPLICATION_OVERLAY);
        } else {
            window.setType(WindowManager.LayoutParams.TYPE_SYSTEM_ALERT);
        }
        
        // 获取课程信息
        String courseName = getIntent().getStringExtra("course_name");
        String courseLocation = getIntent().getStringExtra("course_location");
        String courseTime = getIntent().getStringExtra("course_time");
        int reminderMinutes = getIntent().getIntExtra("reminder_minutes", 10);
        
        // 显示信息
        TextView tvCourseName = findViewById(R.id.tv_course_name);
        TextView tvCourseInfo = findViewById(R.id.tv_course_info);
        TextView tvReminderTime = findViewById(R.id.tv_reminder_time);
        
        tvCourseName.setText(courseName);
        tvCourseInfo.setText("地点：" + courseLocation + "\n时间：" + courseTime);
        tvReminderTime.setText(reminderMinutes + "分钟后上课");
        
        // 设置按钮点击事件
        findViewById(R.id.btn_confirm).setOnClickListener(v -> {
            stopSoundAndVibration();
            finish();
        });
        
        findViewById(R.id.btn_close).setOnClickListener(v -> {
            stopSoundAndVibration();
            finish();
        });
        
        // 播放提示音和震动
        playNotificationSound();
        vibrate();
    }
    
    /**
     * 播放提示音
     */
    private void playNotificationSound() {
        try {
            // 使用系统默认通知音
            Uri notificationUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
            
            mediaPlayer = new MediaPlayer();
            mediaPlayer.setDataSource(this, notificationUri);
            
            AudioAttributes audioAttributes = new AudioAttributes.Builder()
                    .setUsage(AudioAttributes.USAGE_NOTIFICATION)
                    .setContentType(AudioAttributes.CONTENT_TYPE_SONIFICATION)
                    .build();
            mediaPlayer.setAudioAttributes(audioAttributes);
            
            mediaPlayer.setLooping(false);
            mediaPlayer.prepare();
            mediaPlayer.start();
            
            // 播放完成后释放资源
            mediaPlayer.setOnCompletionListener(mp -> {
                if (mediaPlayer != null) {
                    mediaPlayer.release();
                    mediaPlayer = null;
                }
            });
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
    
    /**
     * 震动
     */
    private void vibrate() {
        try {
            vibrator = (Vibrator) getSystemService(Context.VIBRATOR_SERVICE);
            if (vibrator != null && vibrator.hasVibrator()) {
                if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.O) {
                    // 震动模式：等待-震动-等待-震动
                    long[] pattern = {0, 300, 200, 300};
                    VibrationEffect effect = VibrationEffect.createWaveform(pattern, -1);
                    vibrator.vibrate(effect);
                } else {
                    // 旧版本API
                    long[] pattern = {0, 300, 200, 300};
                    vibrator.vibrate(pattern, -1);
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
    
    /**
     * 停止声音和震动
     */
    private void stopSoundAndVibration() {
        if (mediaPlayer != null) {
            if (mediaPlayer.isPlaying()) {
                mediaPlayer.stop();
            }
            mediaPlayer.release();
            mediaPlayer = null;
        }
        
        if (vibrator != null) {
            vibrator.cancel();
            vibrator = null;
        }
    }
    
    @Override
    protected void onDestroy() {
        super.onDestroy();
        stopSoundAndVibration();
    }
    
    @Override
    public void onBackPressed() {
        stopSoundAndVibration();
        super.onBackPressed();
    }
}