Android久坐提醒功能实现：完整代码及详细教程

如今，人们长时间使用手机或电脑办公学习，久坐不动已成为普遍现象，这对健康造成了一定的危害。为了提醒用户注意起身活动，很多应用都加入了久坐提醒功能。

本文将介绍如何使用Android实现一个简单的久坐提醒功能，并提供完整可运行的代码示例。

功能介绍

本示例程序的功能如下：

点击'Start Sit Reminder'按钮，启动久坐提醒功能。2. 程序会在后台计时，例如设定为60秒。3. 计时结束后，会在屏幕上弹出一个通知，提醒用户休息。4. 点击'Stop Sit Reminder'按钮，可以停止提醒功能。

实现步骤

1. 创建Android项目

首先，在Android Studio中创建一个新的Android项目。

2. 添加权限

在AndroidManifest.xml文件中添加震动权限：xml

3. 设计布局文件

创建布局文件activity_main.xml，添加两个按钮，分别用于启动和停止久坐提醒：xml

<Button        android:id='@+id/start_button'        android:layout_width='wrap_content'        android:layout_height='wrap_content'        android:text='Start Sit Reminder' />

<Button        android:id='@+id/stop_button'        android:layout_width='wrap_content'        android:layout_height='wrap_content'        android:text='Stop Sit Reminder' />

4. 创建通知图标

在res/drawable目录下创建一个名为ic_notification.xml的矢量图文件，用于通知栏图标：xml

5. 编写Java代码

最后，编写MainActivity.java文件，实现久坐提醒的逻辑：javaimport android.app.NotificationChannel;import android.app.NotificationManager;import android.app.PendingIntent;import android.content.Context;import android.content.Intent;import android.os.Build;import android.os.Bundle;import android.os.CountDownTimer;import android.view.View;import android.widget.Button;import android.widget.Toast;

import androidx.appcompat.app.AppCompatActivity;import androidx.core.app.NotificationCompat;import androidx.core.app.NotificationManagerCompat;

public class MainActivity extends AppCompatActivity {

private static final String CHANNEL_ID = 'sit_reminder_channel';    private static final int NOTIFICATION_ID = 1;

private Button startButton;    private Button stopButton;    private CountDownTimer countDownTimer;

@Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);

    createNotificationChannel();

    startButton = findViewById(R.id.start_button);        stopButton = findViewById(R.id.stop_button);

    startButton.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                startSitReminder();            }        });

    stopButton.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                stopSitReminder();            }        });    }

private void createNotificationChannel() {        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {            CharSequence name = getString(R.string.channel_name);            String description = getString(R.string.channel_description);            int importance = NotificationManager.IMPORTANCE_DEFAULT;            NotificationChannel channel = new NotificationChannel(CHANNEL_ID, name, importance);            channel.setDescription(description);            NotificationManager notificationManager = getSystemService(NotificationManager.class);            notificationManager.createNotificationChannel(channel);        }    }

private void startSitReminder() {        countDownTimer = new CountDownTimer(60000, 1000) {            @Override            public void onTick(long millisUntilFinished) {                // Nothing to do on tick            }

        @Override            public void onFinish() {                showNotification();            }        }.start();

    Toast.makeText(this, 'Sit reminder started', Toast.LENGTH_SHORT).show();    }

private void stopSitReminder() {        if (countDownTimer != null) {            countDownTimer.cancel();        }

    cancelNotification();

    Toast.makeText(this, 'Sit reminder stopped', Toast.LENGTH_SHORT).show();    }

private void showNotification() {        Intent intent = new Intent(this, MainActivity.class);        PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, intent, 0);

    NotificationCompat.Builder builder = new NotificationCompat.Builder(this, CHANNEL_ID)                .setSmallIcon(R.drawable.ic_notification)                .setContentTitle('Sit Reminder')                .setContentText('You have been sitting for a long time. Take a break and stretch!')                .setPriority(NotificationCompat.PRIORITY_DEFAULT)                .setContentIntent(pendingIntent)                .setAutoCancel(true);

    NotificationManagerCompat notificationManager = NotificationManagerCompat.from(this);        notificationManager.notify(NOTIFICATION_ID, builder.build());    }

private void cancelNotification() {        NotificationManagerCompat notificationManager = NotificationManagerCompat.from(this);        notificationManager.cancel(NOTIFICATION_ID);