Update AlarmAlertActivity.java

main
pf45q8f3g 7 months ago
parent fa7ac6013a
commit 7db4521cd4

@ -1,17 +1,15 @@
/* /*
* Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net) * (c) 2010-2011, MiCode (www.micode.net)
* *
* Licensed under the Apache License, Version 2.0 (the "License"); * 使 Apache License, Version 2.0
* you may not use this file except in compliance with the License. * 使
* You may obtain a copy of the License at *
* *
* http://www.apache.org/licenses/LICENSE-2.0 * 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.
*/ */
// 导入必要的类和接口 // 导入必要的类和接口
@ -21,8 +19,6 @@ import android.app.Activity;
import android.app.AlertDialog; import android.app.AlertDialog;
import android.content.Context; import android.content.Context;
import android.content.DialogInterface; import android.content.DialogInterface;
import android.content.DialogInterface.OnClickListener;
import android.content.DialogInterface.OnDismissListener;
import android.content.Intent; import android.content.Intent;
import android.media.AudioManager; import android.media.AudioManager;
import android.media.MediaPlayer; import android.media.MediaPlayer;
@ -40,171 +36,138 @@ import net.micode.notes.tool.DataUtils;
import java.io.IOException; import java.io.IOException;
// AlarmAlertActivity类继承自Activity实现OnClickListener和OnDismissListener接口 /**
public class AlarmAlertActivity extends Activity implements OnClickListener, OnDismissListener { * AlarmAlertActivity
private long mNoteId; //文本在数据库存储中的ID号 * Activity
private String mSnippet; //闹钟提示时出现的文本片段 */
private static final int SNIPPET_PREW_MAX_LEN = 60; public class AlarmAlertActivity extends Activity implements DialogInterface.OnClickListener, DialogInterface.OnDismissListener {
MediaPlayer mPlayer; private long mNoteId; // 便签在数据库中的 ID
private String mSnippet; // 闹钟提示时显示的文本片段
private static final int SNIPPET_PREVIEW_MAX_LEN = 60; // 文本片段的最大长度
private MediaPlayer mPlayer; // 用于播放闹钟声音的 MediaPlayer
@Override @Override
protected void onCreate(Bundle savedInstanceState) { protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState); super.onCreate(savedInstanceState);
//Bundle类型的数据与Map类型的数据相似都是以key-value的形式存储数据的 requestWindowFeature(Window.FEATURE_NO_TITLE); // 去掉标题栏
//onsaveInstanceState方法是用来保存Activity的状态的
//能从onCreate的参数savedInsanceState中获得状态数据
requestWindowFeature(Window.FEATURE_NO_TITLE);
//界面显示——无标题
final Window win = getWindow(); final Window win = getWindow();
win.addFlags(WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED); win.addFlags(WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED); // 在锁屏状态下显示
if (!isScreenOn()) { if (!isScreenOn()) {
// 如果屏幕是关闭的,点亮屏幕并允许锁屏
win.addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON win.addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON
//保持窗体点亮
| WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON | WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON
//将窗体点亮
| WindowManager.LayoutParams.FLAG_ALLOW_LOCK_WHILE_SCREEN_ON | WindowManager.LayoutParams.FLAG_ALLOW_LOCK_WHILE_SCREEN_ON
//允许窗体点亮时锁屏
| WindowManager.LayoutParams.FLAG_LAYOUT_INSET_DECOR); | 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(); Intent intent = getIntent();
try { try {
mNoteId = Long.valueOf(intent.getData().getPathSegments().get(1)); mNoteId = Long.valueOf(intent.getData().getPathSegments().get(1));
mSnippet = DataUtils.getSnippetById(this.getContentResolver(), mNoteId); mSnippet = DataUtils.getSnippetById(this.getContentResolver(), mNoteId);
//根据ID从数据库中获取标签的内容 if (mSnippet.length() > SNIPPET_PREVIEW_MAX_LEN) {
//getContentResolver是实现数据共享实例存储。 mSnippet = mSnippet.substring(0, SNIPPET_PREVIEW_MAX_LEN) + getResources().getString(R.string.notelist_string_info);
mSnippet = mSnippet.length() > SNIPPET_PREW_MAX_LEN ? mSnippet.substring(0, }
SNIPPET_PREW_MAX_LEN) + getResources().getString(R.string.notelist_string_info)
: mSnippet;
//判断标签片段是否达到符合长度
} catch (IllegalArgumentException e) { } catch (IllegalArgumentException e) {
e.printStackTrace(); e.printStackTrace();
return; return;
} }
/*
try
{
// 代码区
}
catch(Exception e)
{
// 异常处理
}
*/
mPlayer = new MediaPlayer(); mPlayer = new MediaPlayer();
if (DataUtils.visibleInNoteDatabase(getContentResolver(), mNoteId, Notes.TYPE_NOTE)) { if (DataUtils.visibleInNoteDatabase(getContentResolver(), mNoteId, Notes.TYPE_NOTE)) {
showActionDialog(); showActionDialog();
//弹出对话框
playAlarmSound(); playAlarmSound();
//闹钟提示音激发
} else { } else {
finish(); finish();
//完成闹钟动作
} }
} }
/**
*
* @return true false
*/
private boolean isScreenOn() { private boolean isScreenOn() {
//判断屏幕是否锁屏,调用系统函数判断,最后返回值是布尔类型
PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE); PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
return pm.isScreenOn(); return pm.isScreenOn();
} }
/**
*
*/
private void playAlarmSound() { private void playAlarmSound() {
//闹钟提示音激发
Uri url = RingtoneManager.getActualDefaultRingtoneUri(this, RingtoneManager.TYPE_ALARM); Uri url = RingtoneManager.getActualDefaultRingtoneUri(this, RingtoneManager.TYPE_ALARM);
//调用系统的铃声管理URI得到闹钟提示音 int silentModeStreams = Settings.System.getInt(getContentResolver(), Settings.System.MODE_RINGER_STREAMS_AFFECTED, 0);
int silentModeStreams = Settings.System.getInt(getContentResolver(),
Settings.System.MODE_RINGER_STREAMS_AFFECTED, 0);
if ((silentModeStreams & (1 << AudioManager.STREAM_ALARM)) != 0) { if ((silentModeStreams & (1 << AudioManager.STREAM_ALARM)) != 0) {
mPlayer.setAudioStreamType(silentModeStreams); mPlayer.setAudioStreamType(silentModeStreams);
} else { } else {
mPlayer.setAudioStreamType(AudioManager.STREAM_ALARM); mPlayer.setAudioStreamType(AudioManager.STREAM_ALARM);
} }
try { try {
mPlayer.setDataSource(this, url); mPlayer.setDataSource(this, url);
//方法setDataSource(Context context, Uri uri)
//解释:无返回值,设置多媒体数据来源【根据 Uri】
mPlayer.prepare(); mPlayer.prepare();
//准备同步
mPlayer.setLooping(true); mPlayer.setLooping(true);
//设置是否循环播放
mPlayer.start(); mPlayer.start();
//开始播放 } catch (IllegalArgumentException | SecurityException | IllegalStateException | IOException e) {
} catch (IllegalArgumentException e) {
// TODO Auto-generated catch block
e.printStackTrace();
//e.printStackTrace()函数功能是抛出异常, 还将显示出更深的调用信息
//System.out.println(e),这个方法打印出异常,并且输出在哪里出现的异常
} 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(); e.printStackTrace();
} }
} }
/**
*
*/
private void showActionDialog() { private void showActionDialog() {
AlertDialog.Builder dialog = new AlertDialog.Builder(this); AlertDialog.Builder dialog = new AlertDialog.Builder(this);
//AlertDialog的构造方法全部是Protected的
//所以不能直接通过new一个AlertDialog来创建出一个AlertDialog。
//要创建一个AlertDialog就要用到AlertDialog.Builder中的create()方法
//如这里的dialog就是新建了一个AlertDialog
dialog.setTitle(R.string.app_name); dialog.setTitle(R.string.app_name);
//为对话框设置标题
dialog.setMessage(mSnippet); dialog.setMessage(mSnippet);
//为对话框设置内容
dialog.setPositiveButton(R.string.notealert_ok, this); dialog.setPositiveButton(R.string.notealert_ok, this);
//给对话框添加"Yes"按钮
if (isScreenOn()) { if (isScreenOn()) {
dialog.setNegativeButton(R.string.notealert_enter, this); dialog.setNegativeButton(R.string.notealert_enter, this);
}//对话框添加"No"按钮 }
dialog.show().setOnDismissListener(this); dialog.show().setOnDismissListener(this);
} }
/**
*
* @param dialog
* @param which
*/
@Override
public void onClick(DialogInterface dialog, int which) { public void onClick(DialogInterface dialog, int which) {
switch (which) { switch (which) {
//用which来选择click后下一步的操作
case DialogInterface.BUTTON_NEGATIVE: case DialogInterface.BUTTON_NEGATIVE:
//这是取消操作 // 取消操作,跳转到便签编辑页面
Intent intent = new Intent(this, NoteEditActivity.class); Intent intent = new Intent(this, NoteEditActivity.class);
//实现两个类间的数据传输
intent.setAction(Intent.ACTION_VIEW); intent.setAction(Intent.ACTION_VIEW);
//设置动作属性
intent.putExtra(Intent.EXTRA_UID, mNoteId); intent.putExtra(Intent.EXTRA_UID, mNoteId);
//实现key-value对
//EXTRA_UID为keymNoteId为键
startActivity(intent); startActivity(intent);
//开始动作
break; break;
default: default:
//这是确定操作 // 确定操作,不做任何处理
break; break;
} }
} }
/**
*
* @param dialog
*/
@Override
public void onDismiss(DialogInterface dialog) { public void onDismiss(DialogInterface dialog) {
//忽略
stopAlarmSound(); stopAlarmSound();
//停止闹钟声音
finish(); finish();
//完成该动作
} }
/**
*
*/
private void stopAlarmSound() { private void stopAlarmSound() {
if (mPlayer != null) { if (mPlayer != null) {
mPlayer.stop(); mPlayer.stop();
//停止播放
mPlayer.release(); mPlayer.release();
//释放MediaPlayer对象
mPlayer = null; mPlayer = null;
} }
} }
} }

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