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注释java/net/micode/notes/ui/AlarmAlertActivity.java下的代码，该部分实现了闹钟提醒活动，负责处理便签提醒触发时的界面和声音播放，实现对话框按钮点击监听器和对话框关闭监听器

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duan
dxj 3 months ago
parent f4f28055df
commit 32cb7de08c
1 changed files with 53 additions and 45 deletions
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98
java/net/micode/notes/ui/AlarmAlertActivity.java
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@ -14,8 +14,12 @@
* limitations under the License.
*/
/*
* 版权声明和许可证信息（略）
*/
package net.micode.notes.ui;
// 导入Android基础组件
import android.app.Activity;
import android.app.AlertDialog;
import android.content.Context;
@ -23,9 +27,13 @@ import android.content.DialogInterface;
import android.content.DialogInterface.OnClickListener;
import android.content.DialogInterface.OnDismissListener;
import android.content.Intent;
// 导入音频相关组件
import android.media.AudioManager;
import android.media.MediaPlayer;
import android.media.RingtoneManager;
// 导入Android系统服务相关
import android.net.Uri;
import android.os.Bundle;
import android.os.PowerManager;
@ -33,104 +41,104 @@ import android.provider.Settings;
import android.view.Window;
import android.view.WindowManager;
// 导入项目资源
import net.micode.notes.R;
import net.micode.notes.data.Notes;
import net.micode.notes.tool.DataUtils;
import java.io.IOException;
/**
* 闹钟提醒活动 - 负责处理便签提醒触发时的界面和声音播放
* 实现对话框按钮点击监听器和对话框关闭监听器
*/
public class AlarmAlertActivity extends Activity implements OnClickListener, OnDismissListener {
private long mNoteId;
private String mSnippet;
private static final int SNIPPET_PREW_MAX_LEN = 60;
MediaPlayer mPlayer;
private long mNoteId; // 用于存储便签ID
private String mSnippet; // 用于存储便签摘要
private static final int SNIPPET_PREW_MAX_LEN = 60; // 便签摘要的最大长度
MediaPlayer mPlayer; // 用于播放闹钟声音的MediaPlayer对象
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
requestWindowFeature(Window.FEATURE_NO_TITLE); // 隐藏标题栏
final Window win = getWindow();
win.addFlags(WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED);
win.addFlags(WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED); // 设置窗口在锁屏状态下显示
if (!isScreenOn()) {
if (!isScreenOn()) { // 如果屏幕未点亮，则设置相关标志以点亮屏幕
win.addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON
| WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON
| WindowManager.LayoutParams.FLAG_ALLOW_LOCK_WHILE_SCREEN_ON
| WindowManager.LayoutParams.FLAG_LAYOUT_INSET_DECOR);
}
Intent intent = getIntent();
Intent intent = getIntent(); // 获取启动此活动的Intent
try {
mNoteId = Long.valueOf(intent.getData().getPathSegments().get(1));
mSnippet = DataUtils.getSnippetById(this.getContentResolver(), mNoteId);
mNoteId = Long.valueOf(intent.getData().getPathSegments().get(1)); // 从Intent中获取便签ID
mSnippet = DataUtils.getSnippetById(this.getContentResolver(), mNoteId); // 根据ID获取便签摘要
mSnippet = mSnippet.length() > SNIPPET_PREW_MAX_LEN ? mSnippet.substring(0,
SNIPPET_PREW_MAX_LEN) + getResources().getString(R.string.notelist_string_info)
: mSnippet;
: mSnippet; // 截取摘要并添加额外信息
} catch (IllegalArgumentException e) {
e.printStackTrace();
return;
}
mPlayer = new MediaPlayer();
if (DataUtils.visibleInNoteDatabase(getContentResolver(), mNoteId, Notes.TYPE_NOTE)) {
showActionDialog();
playAlarmSound();
mPlayer = new MediaPlayer(); // 创建MediaPlayer对象
if (DataUtils.visibleInNoteDatabase(getContentResolver(), mNoteId, Notes.TYPE_NOTE)) { // 检查便签是否可见
showActionDialog(); // 显示操作对话框
playAlarmSound(); // 播放闹钟声音
} else {
finish();
finish(); // 如果便签不可见，则结束活动
}
}
private boolean isScreenOn() {
private boolean isScreenOn() { // 检查屏幕是否点亮
PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
return pm.isScreenOn();
}
private void playAlarmSound() {
Uri url = RingtoneManager.getActualDefaultRingtoneUri(this, RingtoneManager.TYPE_ALARM);
private void playAlarmSound() { // 播放闹钟声音
Uri url = RingtoneManager.getActualDefaultRingtoneUri(this, RingtoneManager.TYPE_ALARM); // 获取默认闹钟铃声URI
int silentModeStreams = Settings.System.getInt(getContentResolver(),
Settings.System.MODE_RINGER_STREAMS_AFFECTED, 0);
Settings.System.MODE_RINGER_STREAMS_AFFECTED, 0); // 获取静音模式下受影响的音频流类型
if ((silentModeStreams & (1 << AudioManager.STREAM_ALARM)) != 0) {
if ((silentModeStreams & (1 << AudioManager.STREAM_ALARM)) != 0) { // 如果闹钟声音被静音，则设置MediaPlayer的音频流类型
mPlayer.setAudioStreamType(silentModeStreams);
} else {
mPlayer.setAudioStreamType(AudioManager.STREAM_ALARM);
}
try {
mPlayer.setDataSource(this, url);
mPlayer.prepare();
mPlayer.setLooping(true);
mPlayer.start();
mPlayer.setDataSource(this, url); // 设置MediaPlayer的数据源
mPlayer.prepare(); // 准备播放
mPlayer.setLooping(true); // 设置循环播放
mPlayer.start(); // 开始播放
} catch (IllegalArgumentException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (SecurityException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IllegalStateException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
private void showActionDialog() {
private void showActionDialog() { // 显示操作对话框
AlertDialog.Builder dialog = new AlertDialog.Builder(this);
dialog.setTitle(R.string.app_name);
dialog.setMessage(mSnippet);
dialog.setPositiveButton(R.string.notealert_ok, this);
dialog.setTitle(R.string.app_name); // 设置对话框标题
dialog.setMessage(mSnippet); // 设置对话框消息
dialog.setPositiveButton(R.string.notealert_ok, this); // 设置确定按钮及其监听器
if (isScreenOn()) {
dialog.setNegativeButton(R.string.notealert_enter, this);
dialog.setNegativeButton(R.string.notealert_enter, this); // 如果屏幕已点亮，则设置取消按钮及其监听器
}
dialog.show().setOnDismissListener(this);
dialog.show().setOnDismissListener(this); // 显示对话框并设置关闭监听器
}
public void onClick(DialogInterface dialog, int which) {
public void onClick(DialogInterface dialog, int which) { // 对话框按钮点击事件处理
switch (which) {
case DialogInterface.BUTTON_NEGATIVE:
Intent intent = new Intent(this, NoteEditActivity.class);
@ -143,16 +151,16 @@ public class AlarmAlertActivity extends Activity implements OnClickListener, OnD
}
}
public void onDismiss(DialogInterface dialog) {
stopAlarmSound();
finish();
public void onDismiss(DialogInterface dialog) { // 对话框关闭事件处理
stopAlarmSound(); // 停止闹钟声音
finish(); // 结束活动
}
private void stopAlarmSound() {
private void stopAlarmSound() { // 停止闹钟声音
if (mPlayer != null) {
mPlayer.stop();
mPlayer.release();
mPlayer = null;
mPlayer.stop(); // 停止播放
mPlayer.release(); // 释放资源
mPlayer = null; // 置空引用
}
}
}
}
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