Question

我正在使用Pomodoro Technique创建计时器。第一个计时器将是20分钟，在这段时间我希望屏幕关闭。我希望屏幕在计时器结束时重新打开。

在我的清单中，我要求以下权限：

import React, {Component} from 'react'

export default class Expenses extends Component {
  constructor(props) {
    super(props)
    this.state = {
      expenseItems: []
    }
  }

  showItemDetails(idx) {
    const {expenseItems} = this.props.expenses.expenseList[idx]
    this.setState({expenseItems})
  }

  render() {
    const createdDates = this.props.expenses.expenseList.map(({createdAt}) => {
      return createdAt
    })
    const expenseListProps = {
      showItemDetails: (idx) => this.showItemDetails(idx),
      createdDates
    }
    const itemDetailsProps = {expenseItems: this.state.expenseItems}
    return (
      <div>
        <ExpenseList {...expenseListProps}/>
        <ItemDetails {...itemDetailsProps}/>
      </div>
    )
  }
}

class ExpenseList extends Component{
  render() {
    const expenseList = this.props.createdDates.map((date, idx) => (
      <div key={idx}>
        <button onClick={() => this.props.showItemDetails(idx)}>
          {date}
        </button>
      </div>
    ))
    return (
      <div>
        {expenseList}
      </div>
    )
  }
}

class ItemDetails extends Component {
  render() {
    debugger;
    const items = this.props.expenseItems.map(({uid, date, desc, amount}) => (
      <div>
        {uid}
        {date}
        {desc}
        {amount}
      </div>
    ))
    return (
      <div>
        {items}
      </div>
    )
  }
}

在我的计时器类中，我在onCreat（）中获取窗口：

<uses-permission android:name="android.permission.WAKE_LOCK"/>
<uses-permission android:name="android.permission.DISABLE_KEYGUARD" />

在我的计时器的onFinish（）中，我调用了wakeUp（）：

Window win;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_timer);
    createTimer(time_work);
    win = this.getWindow();
}

在wakeUp（）中，我尝试了以下各种组合：

public void onFinish() {
    text_time.setText(R.string.done);
    if (isWork) {
       pomodoro_count++;
       text_pomodoro_count.setText(String.valueOf(pomodoro_count));
       }
    isWork = !isWork;
    onResume();
    //I have more here but removed for brevity
    wakeUp();
    }

Every回答that我have发现is已弃用。

Answer 1

这需要以与我的想法不同的方式完成。

需要做的是需要通过警报创建新活动。

您仍需要manifest中的相同权限：

<uses-permission android:name="android.permission.WAKE_LOCK"/>
<uses-permission android:name="android.permission.DISABLE_KEYGUARD" />

您需要receiver：

public class ReceiverAlarm extends BroadcastReceiver {
private AlarmManager alarmMgr;
private PendingIntent alarmIntent;

//This is what will be called when your alarm goes off
@Override
public void onReceive(Context context, Intent intent) {
    Log.d("Logged", "ReceiverAlarm");
    Intent i = new Intent(context, ScreenWake.class);
    context.startActivity(i);
}

//This is a method I made that will set an alarm
public void setAlarm(Context context, int timeToPop) {
    alarmMgr = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
    Intent intent = new Intent(context, ReceiverAlarm.class);
    alarmIntent = PendingIntent.getBroadcast(context, 0, intent, 0);
    long currentTime = SystemClock.elapsedRealtime();
    long timeToAdd = (long) timeToPop;
    alarmMgr.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
            currentTime + timeToAdd, alarmIntent);
}

public void cancelAlarm(Context context) {
    Intent intent = new Intent(context, ReceiverAlarm.class);
    PendingIntent sender = PendingIntent.getBroadcast(context, 0, intent, 0);
    AlarmManager alarmManager = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
    alarmManager.cancel(sender);
}

然后，当通过警报调用警报时，您将需要一个完全不同的活动：

ScreenWake.java：

protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    setContentView(R.layout.activity_alarm_wakes_screen);

    getWindow().addFlags(WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED |
            WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD |
            WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON |
            WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON |
            WindowManager.LayoutParams.FLAG_ALLOW_LOCK_WHILE_SCREEN_ON);

    ms = new ManagerSound(getApplicationContext());
    ms.playAlarm();
}

定时器调用onFinish（）时打开屏幕

1 个答案: