我有一个Timepicker控件和一个imagebutton,实现功能选择好时间,点击imagebutton开启闹钟,到选定的时间播放MP3音乐,再次点击imagebutton停止音乐,请帮我写完整的可以运行的代码。
时间: 2023-03-25 16:03:56 浏览: 67
好的,以下是可以实现你所需功能的代码:
```
import android.app.AlarmManager;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.media.MediaPlayer;
import android.os.Bundle;
import android.view.View;
import android.widget.ImageButton;
import android.widget.TimePicker;
import android.widget.Toast;
import androidx.appcompat.app.AppCompatActivity;
import java.util.Calendar;
public class MainActivity extends AppCompatActivity {
private TimePicker timePicker;
private ImageButton imageButton;
private MediaPlayer mediaPlayer;
private PendingIntent pendingIntent;
private AlarmManager alarmManager;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
timePicker = findViewById(R.id.timePicker);
imageButton = findViewById(R.id.imageButton);
// 初始化MediaPlayer
mediaPlayer = MediaPlayer.create(this, R.raw.music);
// 设置闹钟
alarmManager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
Intent intent = new Intent(this, AlarmReceiver.class);
pendingIntent = PendingIntent.getBroadcast(this, , intent, );
// 点击imageButton开启/关闭闹钟
imageButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (alarmManager != null) {
if (alarmManager.getNextAlarmClock() != null) {
// 关闭闹钟
alarmManager.cancel(pendingIntent);
mediaPlayer.stop();
Toast.makeText(MainActivity.this, "闹钟已关闭", Toast.LENGTH_SHORT).show();
} else {
// 开启闹钟
int hour = timePicker.getHour();
int minute = timePicker.getMinute();
Calendar calendar = Calendar.getInstance();
calendar.set(Calendar.HOUR_OF_DAY, hour);
calendar.set(Calendar.MINUTE, minute);
calendar.set(Calendar.SECOND, );
long timeInMillis = calendar.getTimeInMillis();
if (timeInMillis < System.currentTimeMillis()) {
timeInMillis += 24 * 60 * 60 * 100;
}
alarmManager.setExact(AlarmManager.RTC_WAKEUP, timeInMillis, pendingIntent);
mediaPlayer.start();
Toast.makeText(MainActivity.this, "闹钟已开启", Toast.LENGTH_SHORT).show();
}
}
}
});
}
}
```
需要注意的是,上述代码中的 `AlarmReceiver` 是一个广播接收器,用于接收闹钟触发时的广播并执行相应操作。你需要在你的项目中创建一个 `AlarmReceiver` 类,并在 `AndroidManifest.xml` 文件中注册该广播接收器。以下是 `AlarmReceiver` 类的代码:
```
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.media.MediaPlayer;
public class AlarmReceiver extends BroadcastReceiver {
private MediaPlayer mediaPlayer;
@Override
public void onReceive(Context context, Intent intent) {
// 播放音乐
mediaPlayer = MediaPlayer.create(context, R.raw.music);
mediaPlayer.start();
}
}
```
希望这份代码能够帮助到你,如果你有任何问题或疑问,欢迎随时向我提问。