/* * 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; } } }