通知Notification

状态栏通知的简单创建

注：如果下面的发送通知和发送导航通知是跳转到同一个界面，那么可能会发生覆盖问题。

notification跳转的Activity分为常规的和特定的，常规的就是在其他页面也可以跳转进去的；特定的是只用来显示通知的其他内容的Activity

可以创建一个Activity，写上几个Button来手动发送通知

以下方法里一样的类，如（NotificationCompat.Builder、NotificationManager等，可以提出来设为全局的）
（一）发送通知（封装在一个方法里）

public void sendNotification(){        /**构造通知notification的界面*/        NotificationCompat.Builder builder = new NotificationCompat.Builder(this);        builder.setSmallIcon(R.drawable.ic_launcher); //小图标        builder.setContentTitle(getString(R.string.notification_title)); //标题，一般定义在String文件里        builder.setContentText(getString(R.string.notification_content)); //内容        builder.setTicker(getString(R.string.notification_content)); //滚动的内容        builder.setAutoCancel(true); //点击后自动消失        /**通知行为*/        Intent intents = new Intent(this,MediaPlayerScanOneActivity.class);//点击通知时要跳转的Activity//启动的特定Activity在一个新的任务栈中intents.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK|Intent.FLAG_ACTIVITY_CLEAR_TASK);        PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, intents, PendingIntent.FLAG_UPDATE_CURRENT);        builder.setContentIntent(pendingIntent);        /**发送通知notification*/        NotificationManager manager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);        int notificationId = 1;        Notification notification = builder.build();        manager.notify(notificationId, notification);    }

（二）更新通知

public void updateNotification(){        //更新哪个通知，就用哪个通知的notificationId        /**构造通知notification的界面*/        NotificationCompat.Builder builder = new NotificationCompat.Builder(this);        builder.setSmallIcon(R.drawable.kg_ic_navigation_game); //小图标        builder.setContentTitle("双十一"); //标题        builder.setContentText("抢购"); //内容        builder.setTicker("抢购"); //滚动的内容        builder.setAutoCancel(true); //点击后自动消失        /**通知行为*/        Intent intents = new Intent(this,MusicPlayerMainActivity.class);//点击通知时要跳转的Activity        PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, intents, PendingIntent.FLAG_UPDATE_CURRENT);        builder.setContentIntent(pendingIntent);        /**发送通知notification*/        NotificationManager manager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);        int notificationId = 1;        Notification notification = builder.build();        manager.notify(notificationId, notification);    }

（三）清除通知

public void clearNotification(){        NotificationManager manager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);        manager.cancel(1);//消除某个ID的通知//      manager.cancelAll();//消除所有通知    }

（四）发送导航通知（返回时，返回到通知Activity的父类Activity）

public void sendNavigationNotification(){        /**发送导航通知*/        NotificationCompat.Builder builder = new NotificationCompat.Builder(this);        builder.setSmallIcon(R.drawable.kg_ic_navigation_more_ringtone);        builder.setContentTitle("降价通知");        builder.setContentText("全场不要钱，快来抢!!");        builder.setTicker("降价通知");        builder.setAutoCancel(true);        /**通知行为*/        Intent intents = new Intent(this,MediaPlayerScanOneActivity.class);//点击通知时要跳转的Activity        //构造一个返回栈        TaskStackBuilder stackBuilder = TaskStackBuilder.create(this);        stackBuilder.addParentStack(MediaPlayerScanOneActivity.class);//同上        stackBuilder.addNextIntent(intents);        PendingIntent pendingIntent = stackBuilder.getPendingIntent(0, PendingIntent.FLAG_UPDATE_CURRENT);        builder.setContentIntent(pendingIntent);        /**发送通知*/        NotificationManager manager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);         int notificationId = 2;        Notification notification = builder.build();        manager.notify(notificationId,notification);    }

并且在AndroidManifest里写上要跳转的Activity的父类Activity

<activity android:name=".MediaPlayerScanOneActivity"            android:parentActivityName=".MusicPlayerMainActivity"></activity>

下载进度的通知

public void download(){        /**构造通知notification的界面*/        final NotificationCompat.Builder builder = new NotificationCompat.Builder(this);        builder.setSmallIcon(R.drawable.kg_scanning_view_scan); //小图标        builder.setContentTitle("下载文件"); //标题，一般定义在String文件里        builder.setContentText("开始下载文件"); //内容        builder.setTicker("开始下载文件"); //滚动的内容        builder.setAutoCancel(true); //点击后自动消失        /**发送通知notification*/        final NotificationManager manager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);        final int notificationId = 3;        Notification notification = builder.build();        manager.notify(notificationId, notification);        //为了不让主线程停顿，在子线程里刷新        new Thread(new Runnable() {            @Override            public void run() {                for (int i = 1; i <= 100; i++) {//                  builder.setProgress(max, progress, indeterminate); //                  max:最大进度    progress:当前进度   indeterminate:false为确定的,true为不确定的(就是不知道什么时候完)                    builder.setProgress(100, i, false);//                  builder.setProgress(0, 0, true);//设置进度为不确定模式                    builder.setContentText("下载文件中...");                    manager.notify(notificationId, builder.build());//刷新通知界面                    try {                        Thread.sleep(100); //间隔100毫秒                    } catch (InterruptedException e) {                        e.printStackTrace();                    }                }                builder.setProgress(0, 0, false);                builder.setContentText("下载完成");                manager.notify(notificationId, builder.build());//刷新通知界面            }        }).start();    }

BigView的Notification（下面多加了按钮），当上面还有其他通知时，下面的按钮会收起隐藏

public void bigViewNotification(){        /**构造通知notification的界面*/        NotificationCompat.Builder builder = new NotificationCompat.Builder(this);        builder.setSmallIcon(R.drawable.kg_scanning_view_scan); //小图标        builder.setContentTitle("音乐播放器"); //标题，一般定义在String文件里        builder.setContentText("无聊听听歌"); //内容        builder.setTicker("音乐播放器"); //滚动的内容        builder.setAutoCancel(true); //点击后自动消失        builder.setStyle(new NotificationCompat.BigTextStyle().bigText("无聊听听歌"));        /**播放动作*/        Intent playIntent = new Intent(this,MediaPlayerMusicService.class);        playIntent.putExtra("MUSIC_PATH", "file://"+Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_MUSIC)+"/xxx.mp3");        PendingIntent playPendingIntent = PendingIntent.getService(this, 0, playIntent, PendingIntent.FLAG_UPDATE_CURRENT);//      playIntent.setAction(action); //如果两个动作想要启动的是同一个Service或其他东西，要传参就必须要设置Action来区分Intent        builder.addAction(R.drawable.widget_play_button_default, "播放", playPendingIntent);        /**暂停动作*/        Intent pauseIntent = new Intent(this,MediaPlayerMusicService.class);        playIntent.putExtra("MUSIC_PATH", "file://"+Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_MUSIC)+"/xxx.mp3");        PendingIntent pausePendingIntent = PendingIntent.getService(this, 0, pauseIntent, PendingIntent.FLAG_UPDATE_CURRENT);//      playIntent.setAction(action);        builder.addAction(R.drawable.widget_pause_button_default, "暂停", pausePendingIntent);        /**发送通知notification*/        NotificationManager manager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);        manager.notify(4, builder.build());    }

自定义通知

public void MyNotification(){        NotificationCompat.Builder builder = new NotificationCompat.Builder(this);        //自定义View        RemoteViews views = new RemoteViews(getPackageName(), R.layout.myself_notification_layout);        //自定义通知必须要设置icon，其他不设置不影响        builder.setSmallIcon(R.drawable.ic_launcher);        builder.setTicker("启动酷狗音乐");        Intent preIntent = new Intent(this,MediaPlayerMusicService.class);        PendingIntent prePendingIntent = PendingIntent.getService(this, 0, preIntent, PendingIntent.FLAG_UPDATE_CURRENT);        //通知里的自定义按键的监听        views.setOnClickPendingIntent(R.id.notification_music_pre, prePendingIntent);//      views.setOnClickPendingIntent(R.id.notification_music_play, pendingIntent);//      views.setOnClickPendingIntent(R.id.notification_music_next, pendingIntent);        builder.setContent(views);        NotificationManager manager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);        manager.notify(5,builder.build());    }