pull/2/head
admin 2 years ago
parent 3195e60625
commit 7b40a97401

@ -64,45 +64,53 @@ public class AlarmAlertActivity extends Activity implements OnClickListener, OnD
Intent intent = getIntent();
try {
// 获取传递过来的NoteId和Snippet
mNoteId = Long.valueOf(intent.getData().getPathSegments().get(1));
mSnippet = DataUtils.getSnippetById(this.getContentResolver(), mNoteId);
// 处理提醒信息的文本长度和显示方式
mSnippet = mSnippet.length() > SNIPPET_PREW_MAX_LEN ? mSnippet.substring(0,
SNIPPET_PREW_MAX_LEN) + getResources().getString(R.string.notelist_string_info)
: mSnippet;
: mSnippet;// 如果文本过长则截取前60个字符加上一个显示“…”的标识
} catch (IllegalArgumentException e) {
e.printStackTrace();
return;
}
mPlayer = new MediaPlayer();
// 从数据源中查询记录是否存在如果存在则显示提醒菜单和播放提醒声音否则结束Activity
if (DataUtils.visibleInNoteDatabase(getContentResolver(), mNoteId, Notes.TYPE_NOTE)) {
showActionDialog();
playAlarmSound();
showActionDialog();// 显示提醒菜单
playAlarmSound();// 播放提醒声音
} else {
finish();
finish();// Note不存在结束Activity
}
}
private boolean isScreenOn() {
private boolean isScreenOn() {// 检测屏幕是否点亮
PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
return pm.isScreenOn();
return pm.isScreenOn();// 返回屏幕是否点亮的状态
}
private void playAlarmSound() {
// 获取系统设置中的闹钟铃声
Uri url = RingtoneManager.getActualDefaultRingtoneUri(this, RingtoneManager.TYPE_ALARM);
// 获取当前系统模式下是否与闹钟声音相应
int silentModeStreams = Settings.System.getInt(getContentResolver(),
Settings.System.MODE_RINGER_STREAMS_AFFECTED, 0);
// 设置播放器的音频串流类型
if ((silentModeStreams & (1 << AudioManager.STREAM_ALARM)) != 0) {
mPlayer.setAudioStreamType(silentModeStreams);
} else {
mPlayer.setAudioStreamType(AudioManager.STREAM_ALARM);
}
try {
// 设置播放器的数据源
mPlayer.setDataSource(this, url);
// 缓冲播放器的媒体源数据
mPlayer.prepare();
// 设置播放器循环播放
mPlayer.setLooping(true);
// 播放闹钟声音
mPlayer.start();
} catch (IllegalArgumentException e) {
// TODO Auto-generated catch block
@ -118,25 +126,25 @@ public class AlarmAlertActivity extends Activity implements OnClickListener, OnD
e.printStackTrace();
}
}
// 显示提醒菜单Dialog包括Note的文本信息、确认键和选择键(如果屏幕是点亮的)
private void showActionDialog() {
AlertDialog.Builder dialog = new AlertDialog.Builder(this);
dialog.setTitle(R.string.app_name);
AlertDialog.Builder dialog = new AlertDialog.Builder(this);// 设置Dialog的标题为应用名称
dialog.setTitle(R.string.app_name);// 设置Dialog的信息为Note的文本信息
dialog.setMessage(mSnippet);
dialog.setPositiveButton(R.string.notealert_ok, this);
if (isScreenOn()) {
dialog.setPositiveButton(R.string.notealert_ok, this);// 设置确认键点击后执行onClick()方法
if (isScreenOn()) {// 如果屏幕是点亮的,设置选择键 “进入笔记”, 点击后执行onClick()方法
dialog.setNegativeButton(R.string.notealert_enter, this);
}
dialog.show().setOnDismissListener(this);
dialog.show().setOnDismissListener(this);// 显示Dialog并设置当Dialog消失时的监听器
}
// Dialog按键点击响应函数, which为点击的按键的序号
public void onClick(DialogInterface dialog, int which) {
switch (which) {
case DialogInterface.BUTTON_NEGATIVE:
case DialogInterface.BUTTON_NEGATIVE:// 如果按下了选择键”进入笔记“
Intent intent = new Intent(this, NoteEditActivity.class);
intent.setAction(Intent.ACTION_VIEW);
intent.putExtra(Intent.EXTRA_UID, mNoteId);
startActivity(intent);
startActivity(intent);// 打开Note编辑界面
break;
default:
break;
@ -144,15 +152,15 @@ public class AlarmAlertActivity extends Activity implements OnClickListener, OnD
}
public void onDismiss(DialogInterface dialog) {
stopAlarmSound();
finish();
stopAlarmSound();// 停止播放闹钟声音
finish();// 结束Activity
}
private void stopAlarmSound() {
if (mPlayer != null) {
mPlayer.stop();
mPlayer.release();
mPlayer = null;
if (mPlayer != null) {// 如果播放器存在
mPlayer.stop();// 停止播放
mPlayer.release();// 释放播放器占用的资源
mPlayer = null;// 将播放器设为空
}
}
}

@ -27,9 +27,8 @@ import android.database.Cursor;
import net.micode.notes.data.Notes;
import net.micode.notes.data.Notes.NoteColumns;
// 定义接收闹钟初始化的广播接收器
public class AlarmInitReceiver extends BroadcastReceiver {
private static final String [] PROJECTION = new String [] {
NoteColumns.ID,
NoteColumns.ALERTED_DATE
@ -37,29 +36,32 @@ public class AlarmInitReceiver extends BroadcastReceiver {
private static final int COLUMN_ID = 0;
private static final int COLUMN_ALERTED_DATE = 1;
// 查询提醒时间比当前时间更晚的Note记录并将它们转为闹钟事件
@Override
public void onReceive(Context context, Intent intent) {
// 获取当前时间
long currentDate = System.currentTimeMillis();
Cursor c = context.getContentResolver().query(Notes.CONTENT_NOTE_URI,
PROJECTION,
NoteColumns.ALERTED_DATE + ">? AND " + NoteColumns.TYPE + "=" + Notes.TYPE_NOTE,
new String[] { String.valueOf(currentDate) },
NoteColumns.ALERTED_DATE + ">? AND " + NoteColumns.TYPE + "=" + Notes.TYPE_NOTE,// 查询条件提醒时间比当前时间更晚且类型为Note
new String[] { String.valueOf(currentDate) }, // 查询参数,当前时间
null);
// 查询所有提醒时间晚于当前时间的Note记录
if (c != null) {
if (c.moveToFirst()) {
do {
// 获取提醒时间和Note的ID以创建相应的PendingInten
long alertDate = c.getLong(COLUMN_ALERTED_DATE);
Intent sender = new Intent(context, AlarmReceiver.class);
sender.setData(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, c.getLong(COLUMN_ID)));
PendingIntent pendingIntent = PendingIntent.getBroadcast(context, 0, sender, 0);
// 将提醒时间设置为对应的闹钟时间,并创建相应的闹钟事件
AlarmManager alermManager = (AlarmManager) context
.getSystemService(Context.ALARM_SERVICE);
alermManager.set(AlarmManager.RTC_WAKEUP, alertDate, pendingIntent);
} while (c.moveToNext());
}
c.close();
c.close();// 关闭游标
}
}
}

@ -21,10 +21,13 @@ import android.content.Context;
import android.content.Intent;
public class AlarmReceiver extends BroadcastReceiver {
// 监听AlarmManager的闹钟事件接收到事件后启动提醒界面
@Override
public void onReceive(Context context, Intent intent) {
// 指定启动的Activity为AlarmAlertActivity并添加NEW_TASK标志使其在新的任务栈上启动
intent.setClass(context, AlarmAlertActivity.class);
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
// 启动指定Activity
context.startActivity(intent);
}
}

@ -29,7 +29,7 @@ import android.widget.FrameLayout;
import android.widget.NumberPicker;
public class DateTimePicker extends FrameLayout {
// 定义一些常量,包括默认开启状态、半天和一天的小时数、一周的天数、各个数字选择器的取值范围等
private static final boolean DEFAULT_ENABLE_STATE = true;
private static final int HOURS_IN_HALF_DAY = 12;
@ -46,29 +46,33 @@ public class DateTimePicker extends FrameLayout {
private static final int AMPM_SPINNER_MIN_VAL = 0;
private static final int AMPM_SPINNER_MAX_VAL = 1;
private final NumberPicker mDateSpinner;
private final NumberPicker mHourSpinner;
private final NumberPicker mMinuteSpinner;
private final NumberPicker mAmPmSpinner;
private Calendar mDate;
private final NumberPicker mDateSpinner;// 日期选择器
private final NumberPicker mHourSpinner;// 小时选择器
private final NumberPicker mMinuteSpinner;// 分钟选择器
private final NumberPicker mAmPmSpinner;// 上午/下午选择器
private Calendar mDate;// 日期对象
private String[] mDateDisplayValues = new String[DAYS_IN_ALL_WEEK];
private boolean mIsAm;
private boolean mIs24HourView;
private boolean mIsAm;// 当前是上午还是下午
private boolean mIsEnabled = DEFAULT_ENABLE_STATE;
private boolean mIs24HourView;// 是否以24小时制显示时间
private boolean mInitialising;
private boolean mIsEnabled = DEFAULT_ENABLE_STATE;// 当前是否处于开启状态
private OnDateTimeChangedListener mOnDateTimeChangedListener;
private boolean mInitialising;// 是否正在初始化
private OnDateTimeChangedListener mOnDateTimeChangedListener; // 日期时间变化监听器
// 定义一个日期选择监听器,用于在用户调整日期选择器后更新日期值,并回调日期时间变化监听器
private NumberPicker.OnValueChangeListener mOnDateChangedListener = new NumberPicker.OnValueChangeListener() {
// 当日期选择器的值改变时,更新日历的日期,更新日期显示,触发日期时间变化监听器
@Override
public void onValueChange(NumberPicker picker, int oldVal, int newVal) {
// 计算日期变化的天数,并更新日历对象
mDate.add(Calendar.DAY_OF_YEAR, newVal - oldVal);
// 更新日期选择器显示的日期
updateDateControl();
// 通知监听器选择的日期时间发生变化
onDateTimeChanged();
}
};
@ -76,37 +80,49 @@ public class DateTimePicker extends FrameLayout {
private NumberPicker.OnValueChangeListener mOnHourChangedListener = new NumberPicker.OnValueChangeListener() {
@Override
public void onValueChange(NumberPicker picker, int oldVal, int newVal) {
// 默认日期没有变化
boolean isDateChanged = false;
Calendar cal = Calendar.getInstance();
Calendar cal = Calendar.getInstance();// 新建一个Calendar对象
// 如果不是24小时制
if (!mIs24HourView) {
// 如果之前是PM并且从“下午12点”切换到“上午1点”则日期加一
if (!mIsAm && oldVal == HOURS_IN_HALF_DAY - 1 && newVal == HOURS_IN_HALF_DAY) {
cal.setTimeInMillis(mDate.getTimeInMillis());
cal.add(Calendar.DAY_OF_YEAR, 1);
isDateChanged = true;
} else if (mIsAm && oldVal == HOURS_IN_HALF_DAY && newVal == HOURS_IN_HALF_DAY - 1) {
}
// 如果之前是AM并且从“上午12点”切换到“下午11点”则日期减一
else if (mIsAm && oldVal == HOURS_IN_HALF_DAY && newVal == HOURS_IN_HALF_DAY - 1) {
cal.setTimeInMillis(mDate.getTimeInMillis());
cal.add(Calendar.DAY_OF_YEAR, -1);
isDateChanged = true;
}
// 如果从上午和下午之间切换则更新AM/PM控件
if (oldVal == HOURS_IN_HALF_DAY - 1 && newVal == HOURS_IN_HALF_DAY ||
oldVal == HOURS_IN_HALF_DAY && newVal == HOURS_IN_HALF_DAY - 1) {
mIsAm = !mIsAm;
updateAmPmControl();
}
} else {
} else {// 如果是24小时制
// 如果从“23点”切换到“0点”则日期加一
if (oldVal == HOURS_IN_ALL_DAY - 1 && newVal == 0) {
cal.setTimeInMillis(mDate.getTimeInMillis());
cal.add(Calendar.DAY_OF_YEAR, 1);
isDateChanged = true;
} else if (oldVal == 0 && newVal == HOURS_IN_ALL_DAY - 1) {
}
// 如果从“0点”切换到“23点”则日期减一
else if (oldVal == 0 && newVal == HOURS_IN_ALL_DAY - 1) {
cal.setTimeInMillis(mDate.getTimeInMillis());
cal.add(Calendar.DAY_OF_YEAR, -1);
isDateChanged = true;
}
}
// 根据新选择的时间更新日期时间对象
int newHour = mHourSpinner.getValue() % HOURS_IN_HALF_DAY + (mIsAm ? 0 : HOURS_IN_HALF_DAY);
mDate.set(Calendar.HOUR_OF_DAY, newHour);
// 回调onDateTimeChanged方法通知监听器时间发生了变化
onDateTimeChanged();
// 如果日期发生了变化,则更新日期控件
if (isDateChanged) {
setCurrentYear(cal.get(Calendar.YEAR));
setCurrentMonth(cal.get(Calendar.MONTH));
@ -118,14 +134,18 @@ public class DateTimePicker extends FrameLayout {
private NumberPicker.OnValueChangeListener mOnMinuteChangedListener = new NumberPicker.OnValueChangeListener() {
@Override
public void onValueChange(NumberPicker picker, int oldVal, int newVal) {
// 获取当前分钟数值选择范围
int minValue = mMinuteSpinner.getMinValue();
int maxValue = mMinuteSpinner.getMaxValue();
int offset = 0;
// 如果从59切换到00则小时数加一
if (oldVal == maxValue && newVal == minValue) {
offset += 1;
// 如果从00切换到59则小时数减一
} else if (oldVal == minValue && newVal == maxValue) {
offset -= 1;
}
// 如果小时数发生变化,则更新日期时间对象
if (offset != 0) {
mDate.add(Calendar.HOUR_OF_DAY, offset);
mHourSpinner.setValue(getCurrentHour());
@ -139,7 +159,9 @@ public class DateTimePicker extends FrameLayout {
updateAmPmControl();
}
}
// 根据新选择的分钟数值更新日期时间对象
mDate.set(Calendar.MINUTE, newVal);
// 回调onDateTimeChanged方法通知监听器时间发生了变化
onDateTimeChanged();
}
};
@ -147,18 +169,23 @@ public class DateTimePicker extends FrameLayout {
private NumberPicker.OnValueChangeListener mOnAmPmChangedListener = new NumberPicker.OnValueChangeListener() {
@Override
public void onValueChange(NumberPicker picker, int oldVal, int newVal) {
// 切换am/pm标志位
mIsAm = !mIsAm;
// 根据选择的am/pm更新日期时间对象
if (mIsAm) {
mDate.add(Calendar.HOUR_OF_DAY, -HOURS_IN_HALF_DAY);
} else {
mDate.add(Calendar.HOUR_OF_DAY, HOURS_IN_HALF_DAY);
}
// 更新am/pm控件的状态
updateAmPmControl();
// 回调onDateTimeChanged方法通知监听器时间发生了变化
onDateTimeChanged();
}
};
public interface OnDateTimeChangedListener {
// 定义onDateTimeChanged方法用于监听日期和时间的变化
void onDateTimeChanged(DateTimePicker view, int year, int month,
int dayOfMonth, int hourOfDay, int minute);
}

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