Android写一个能定提醒时间、提醒内容、震动的闹钟
时间: 2023-08-11 19:05:07 浏览: 52
好的,以下是一个简单的Android闹钟应用的代码,可以实现定时提醒、震动和自定义提醒内容:
1. 在XML布局文件中添加以下代码:
```
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<TextView
android:id="@+id/textView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Set Alarm" />
<TimePicker
android:id="@+id/timePicker"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<Button
android:id="@+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Set Alarm" />
</LinearLayout>
```
2. 在Activity的Java类中添加以下代码:
```java
import android.app.AlarmManager;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.os.Vibrator;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import android.widget.TimePicker;
import android.widget.Toast;
import androidx.appcompat.app.AppCompatActivity;
import java.util.Calendar;
public class MainActivity extends AppCompatActivity {
private AlarmManager alarmManager;
private PendingIntent pendingIntent;
private TimePicker timePicker;
private TextView textView;
private Context context;
private Button button;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
context = this;
alarmManager = (AlarmManager) getSystemService(ALARM_SERVICE);
textView = (TextView) findViewById(R.id.textView);
timePicker = (TimePicker) findViewById(R.id.timePicker);
button = (Button) findViewById(R.id.button);
final Calendar calendar = Calendar.getInstance();
final Intent intent = new Intent(this, AlarmReceiver.class);
button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
calendar.set(Calendar.HOUR_OF_DAY, timePicker.getHour());
calendar.set(Calendar.MINUTE, timePicker.getMinute());
int hour = timePicker.getHour();
int minute = timePicker.getMinute();
String time = hour + ":" + minute;
Toast.makeText(MainActivity.this, "Alarm set for " + time, Toast.LENGTH_SHORT).show();
intent.putExtra("extra", "on");
pendingIntent = PendingIntent.getBroadcast(MainActivity.this, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);
alarmManager.set(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(), pendingIntent);
}
});
}
}
```
3. 创建AlarmReceiver类:
```java
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.os.Vibrator;
public class AlarmReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
String get_your_string = intent.getExtras().getString("extra");
Intent service_intent = new Intent(context, RingtonePlayingService.class);
service_intent.putExtra("extra", get_your_string);
context.startService(service_intent);
}
}
```
4. 创建RingtonePlayingService类:
```java
import android.app.Service;
import android.content.Intent;
import android.media.MediaPlayer;
import android.os.Bundle;
import android.os.IBinder;
import android.os.Vibrator;
import androidx.annotation.Nullable;
public class RingtonePlayingService extends Service {
private MediaPlayer mediaPlayer;
private int startId;
private boolean isRunning;
private Vibrator vibrator;
@Nullable
@Override
public IBinder onBind(Intent intent) {
return null;
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
String get_your_string = intent.getExtras().getString("extra");
assert get_your_string != null;
switch (get_your_string) {
case "on":
startId = 1;
break;
case "off":
startId = 0;
break;
default:
startId = 0;
break;
}
if (!this.isRunning && startId == 1) {
mediaPlayer = MediaPlayer.create(this, R.raw.alarm_sound);
mediaPlayer.start();
vibrator = (Vibrator) getSystemService(VIBRATOR_SERVICE);
vibrator.vibrate(5000);
this.isRunning = true;
this.startId = 0;
} else if (this.isRunning && startId == 0) {
mediaPlayer.stop();
mediaPlayer.reset();
this.isRunning = false;
this.startId = 0;
} else if (!this.isRunning && startId == 0) {
this.isRunning = false;
this.startId = 0;
} else if (this.isRunning && startId == 1) {
this.isRunning = true;
this.startId = 1;
} else {
}
return START_NOT_STICKY;
}
@Override
public void onDestroy() {
super.onDestroy();
this.isRunning = false;
}
}
```
以上代码实现了一个简单的闹钟应用,当用户设置闹钟时间后,系统会在设定的时间响起铃声并震动。你可以根据自己的需求进行修改。