Question

我看了一个如何使用Alarm Manager进行调度任务的示例; source 1，source 2。但是我有点混淆了如何在特定的时间设置闹钟，因为根据我的理解，它只有15分钟或一天的间隔。我正在寻找的是我希望它在特定的时间重复并重复。

我找到了this，但是从我指定的时间开始，它已经复发了2分钟。以下是我的代码所看到的内容。

活动

AlarmManager alarmManager = (AlarmManager)c.getSystemService(Context.ALARM_SERVICE);
Intent intent = new Intent(c, AlarmReceiver.class);
PendingIntent alarmIntent = PendingIntent.getBroadcast(c, 0, intent, 0);

// Set the alarm to start at 3.46 PM
Calendar calendar = Calendar.getInstance();
calendar.setTimeInMillis(System.currentTimeMillis());
calendar.set(Calendar.HOUR_OF_DAY, 15);
calendar.set(Calendar.MINUTE, 46);

// setRepeating() lets you specify a precise custom interval--in this case,
// 1 day
alarmManager.setRepeating(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(),AlarmManager.INTERVAL_FIFTEEN_MINUTES, alarmIntent);

广播接收器

@Override
public void onReceive(Context context, Intent intent)
{
   // TODO Auto-generated method stub
   Toast.makeText(context, "triggered", Toast.LENGTH_LONG).show();
}

已在AndroidManifest中设置<uses-permission android:name="com.android.alarm.permission.SET_ALARM"/>和<receiver android:name=".BroadCastRecevier"/>。

Answer 1

您可以设置确切的时间：

manager.setExact(AlarmManager.RTC, startTime.getTimeInMillis(), operation);

如果那个时间已经过去了，明天就定了

if (Calendar.getInstance().after(startTime)) {
     startTime.add(Calendar.DATE, 1);
}

Answer 2

必须先添加以下权限：

getStickerPoints(handlingSticker, bitmapPoints);
            float x1 = bitmapPoints[0];
            float y1 = bitmapPoints[1];
            float x2 = bitmapPoints[2];
            float y2 = bitmapPoints[3];
            float x3 = bitmapPoints[4];
            float y3 = bitmapPoints[5];
            float x4 = bitmapPoints[6];
            float y4 = bitmapPoints[7];

            if (showBorder) {
                canvas.drawLine(x1, y1, x2, y2, borderPaint);
                canvas.drawLine(x1, y1, x3, y3, borderPaint);
                canvas.drawLine(x2, y2, x4, y4, borderPaint);
                canvas.drawLine(x4, y4, x3, y3, borderPaint);
            }

            if (showIcons) {
                float rotation = calculateRotation(x4, y4, x3, y3);
                if (handlingSticker.isDrawableSticker()) {
                    for (int i = 0; i < drawable_sticker_icons.size(); i++) {
                        BitmapStickerIcon icon = drawable_sticker_icons.get(i);
                        switch (icon.getPosition()) {
                            case BitmapStickerIcon.LEFT_TOP:
                            configIconMatrix(icon, x1, y1, rotation);
                            break;
                        case BitmapStickerIcon.RIGHT_TOP:
                            configIconMatrix(icon, x2, y2, rotation);
                            break;
                        case BitmapStickerIcon.LEFT_BOTTOM:
                            configIconMatrix(icon, x3, y3, rotation);
                            break;
                        case BitmapStickerIcon.RIGHT_BOTOM:
                            configIconMatrix(icon, x4, y4, rotation);
                            break;
                        case BitmapStickerIcon.TOP_CENTER:
                            configIconMatrix(icon, (x1 + x2) / 2, y2, rotation);
                            break;
                        case BitmapStickerIcon.BOTTOM_CENTER:
                            configIconMatrix(icon, (x3 + x4) / 2, y4, rotation);
                            break;
                        case BitmapStickerIcon.LEFT_CENTER:
                            configIconMatrix(icon, x3, (y1 + y3) / 2, rotation);
                            break;
                        case BitmapStickerIcon.RIGHT_CENTER:
                            configIconMatrix(icon, x4, (y2 + y4) / 2, rotation);
                            break;
                    }
                    icon.draw(canvas, borderPaint);
                }
            }

然后：

<uses-permission android:name="android.permission.WRITE_SETTINGS" ></uses-permission>
<uses-permission android:name="android.permission.CHANGE_CONFIGURATION" ></uses-permission>
<uses-permission android:name="android.permission.MODIFY_AUDIO_SETTINGS" ></uses-permission>

使用Alarm Manager在特定时间重复调度任务

2 个答案: