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ple93m5su 2 years ago
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src/AlarmAlertActivity.java
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/*
* Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package net.micode.notes.ui;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.DialogInterface.OnClickListener;
import android.content.DialogInterface.OnDismissListener;
import android.content.Intent;
import android.media.AudioManager;
import android.media.MediaPlayer;
import android.media.RingtoneManager;
import android.net.Uri;
import android.os.Bundle;
import android.os.PowerManager;
import android.provider.Settings;
import android.view.Window;
import android.view.WindowManager;
import net.micode.notes.R;
import net.micode.notes.data.Notes;
import net.micode.notes.tool.DataUtils;
import java.io.IOException;
/**
* @projectName（项目名称）: xiaomi label
* @package（包）: ui
* @className（类名称）: AlarmAlertActivity
* @description（类描述）: 继承了Activity类，该类实现了OnClickListener和 OnDismissListener两个接口，其中OnClickListener接口用来监听点击事件，OnDismissListener接口用来监听关闭对话框事件
* @author（创建人）: zhangchaoqun
* @createDate（创建时间）: datetime
* @updateUser（修改人）: user
* @updateDate（修改时间）: datetime
* @updateRemark（修改备注）: 说明本次修改内容
* @version（版本）: v1.0
*/
public class AlarmAlertActivity extends Activity implements OnClickListener, OnDismissListener {
private long mNoteId;//文本在数据库存储中的ID号
private String mSnippet;//闹钟提示时出现的文本片段
private static final int SNIPPET_PREW_MAX_LEN = 60;
MediaPlayer mPlayer;
/**
* @description 描述: 消息响应函数，是用来“表示一个窗口正在生成”，这部分就是弹出对话框，播放闹铃
* @param 参数1:savedInstanceState
* @param 参数2:
* @param 参数3:
* @return 返回值:void
* @author zhangchaoqun
*/
@Override
protected void onCreate(Bundle savedInstanceState) {
//从onCreate的参数savedInsanceState中获得状态数据
super.onCreate(savedInstanceState);
//界面显示——无标题
requestWindowFeature(Window.FEATURE_NO_TITLE);
final Window win = getWindow();
win.addFlags(WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED);
if (!isScreenOn()) {
win.addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON
//保持窗体点亮
| WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON
//将窗体点亮
| WindowManager.LayoutParams.FLAG_ALLOW_LOCK_WHILE_SCREEN_ON
//允许窗体点亮时锁屏
| WindowManager.LayoutParams.FLAG_LAYOUT_INSET_DECOR);
//在手机锁屏后如果到了闹钟提示时间，点亮屏幕
}
Intent intent = getIntent();
try {
/*
*根据ID从数据库中获取标签的内容
* getContentResolver（）是实现数据共享，实例存储
*/
mNoteId = Long.valueOf(intent.getData().getPathSegments().get(1));
mSnippet = DataUtils.getSnippetById(this.getContentResolver(), mNoteId);
//判断标签片段是否达到符合长度
mSnippet = mSnippet.length() > SNIPPET_PREW_MAX_LEN ? mSnippet.substring(0,
SNIPPET_PREW_MAX_LEN) + getResources().getString(R.string.notelist_string_info)
: mSnippet;
} catch (IllegalArgumentException e) {
e.printStackTrace();
return;
}
/*
try
{
// 代码区
}
catch(Exception e)
{
// 异常处理
}
代码区如果有错误，就会返回所写异常的处理。*/
mPlayer = new MediaPlayer();
if (DataUtils.visibleInNoteDatabase(getContentResolver(), mNoteId, Notes.TYPE_NOTE)) {
//弹出对话框
showActionDialog();
//闹钟提示音激发
playAlarmSound();
} else {
//完成闹钟动作
finish();
}
}
/**
* @description 描述:定义了一个布尔类型的函数isScreen（）返回屏幕是否是亮的
* @param 参数1:
* @param 参数2:
* @param 参数3:
* @return 返回值:bool 判断屏幕是否亮起
* @author zhangchaoqun
*/
private boolean isScreenOn() {
PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
return pm.isScreenOn();
}
/**
* @description 描述:定义了一个播放铃声的函数playAlarmSound
* @param 参数1:
* @param 参数2:
* @param 参数3:
* @return 返回值:void
* @author zhangchaoqun
*/
private void playAlarmSound() {
//调用系统的铃声管理URI，得到闹钟提示音
Uri url = RingtoneManager.getActualDefaultRingtoneUri(this, RingtoneManager.TYPE_ALARM);
int silentModeStreams = Settings.System.getInt(getContentResolver(),
Settings.System.MODE_RINGER_STREAMS_AFFECTED, 0);
if ((silentModeStreams & (1 << AudioManager.STREAM_ALARM)) != 0) {
mPlayer.setAudioStreamType(silentModeStreams);
} else {
mPlayer.setAudioStreamType(AudioManager.STREAM_ALARM);
}
try {
//setDataSource(Context context, Uri uri)，无返回值，设置多媒体数据来源【根据 Uri】
mPlayer.setDataSource(this, url);
//准备同步
mPlayer.prepare();
//设置是否循环播放
mPlayer.setLooping(true);
//开始播放
mPlayer.start();
} 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();
}
}
/**
* @description 描述:定义了一个显示动作窗口函数showActionDialog
* @param 参数1:
* @param 参数2:
* @param 参数3:
* @return 返回值:void
* @author zhangchaoqun
*/
private void showActionDialog() {
//创建一个AlertDialog，要用到AlertDialog.Builder中的create()方法
AlertDialog.Builder dialog = new AlertDialog.Builder(this);
//为对话框设置标题
dialog.setTitle(R.string.app_name);
//为对话框设置内容
dialog.setMessage(mSnippet);
dialog.setPositiveButton(R.string.notealert_ok, this);
if (isScreenOn()) {
dialog.setNegativeButton(R.string.notealert_enter, this);
}
dialog.show().setOnDismissListener(this);
}
/**
* @description 描述:定义一个onClick函数用来处理鼠标点击事件
* @param 参数1:dialog 对话框
* @param 参数2:which 定位
* @param 参数3:
* @return 返回值:void
* @author zhangchaoqun
*/
public void onClick(DialogInterface dialog, int which) {
switch (which) {
//取消操作
case DialogInterface.BUTTON_NEGATIVE:
//实现两个类间的数据传输
Intent intent = new Intent(this, NoteEditActivity.class);
//设置动作属性
intent.setAction(Intent.ACTION_VIEW);
//实现key-value对
//EXTRA_UID为key；mNoteId为键
intent.putExtra(Intent.EXTRA_UID, mNoteId);
//开始动作
startActivity(intent);
break;
//确定操作
default:
break;
}
}
/**
* @description 描述:窗口关闭监听器接口
* @param 参数1:dialog
* @param 参数2:
* @param 参数3:
* @return 返回值:void
* @author zhangchaoqun
*/
public void onDismiss(DialogInterface dialog) {
//停止闹钟声音
stopAlarmSound();
//完成该动作
finish();
}
/**
* @description 描述:关闭闹钟铃声
* @param 参数1:
* @param 参数2:
* @param 参数3:
* @return 返回值:void
* @author zhangchaoqun
*/
private void stopAlarmSound() {
if (mPlayer != null) {
//停止播放
mPlayer.stop();
//释放MediaPlayer对象
mPlayer.release();
mPlayer = null;
}
}
}
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