Android中Notification的使用（一）

本篇博客只是对Android通知进行了比较浅显的研究，适合通知栏初学者借鉴。废话不多说开始撸代码。

Android开发环境

（1）AndroidStudio 3.1.2
（2）Android设备Honor 8 Lite

一、撸代码和效果图

1.1 Demo功能展示

关于Android8.0以上系统通知栏的使用介绍，详细使用可以查看 Android通知栏微技巧，8.0系统中通知栏的适配

@Overrideprotected void onCreate(Bundle savedInstanceState) {....if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {String channelId = "chat";String channelName = "聊天消息";int importance = NotificationManager.IMPORTANCE_HIGH;createNotificationChannel(channelId, channelName, importance);channelId = "subscribe";channelName = "订阅消息";importance = NotificationManager.IMPORTANCE_DEFAULT;createNotificationChannel(channelId, channelName, importance);channelId = "music";channelName = "酷狗音乐";importance = NotificationManager.IMPORTANCE_DEFAULT;createNotificationChannel(channelId, channelName, importance);channelId = "progress";channelName = "notify自带进度条";importance = NotificationManager.IMPORTANCE_DEFAULT;createNotificationChannel(channelId, channelName, importance);channelId = "uc_progress";channelName = "UC下载进度条";importance = NotificationManager.IMPORTANCE_DEFAULT;createNotificationChannel(channelId, channelName, importance);}.....}@TargetApi(Build.VERSION_CODES.O)private void createNotificationChannel(String channelId, String channelName, int importance) {NotificationChannel channel = new NotificationChannel(channelId, channelName, importance);/*** Android8.0启动震动，记得添加震动权限*/channel.enableVibration(true);/*** 先等2秒，再震动2秒，然后就不震动了，所以这个long数组的元素要是偶数个因为奇数个最后一个没用*/channel.setVibrationPattern(new long[]{2000, 2000, 2000});/*** 设置通知到来时手机关屏时指示灯的提示颜色*/channel.enableLights(true);channel.setLightColor(Color.YELLOW);NotificationManager notificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);notificationManager.createNotificationChannel(channel);}

1.2 通知栏API的使用

代码分析

/*** 第一个样式通知栏：*/private void firstNotification() {//创建Builder的时候传入“chat”NotificationCompat.Builder builder = new NotificationCompat.Builder(this, "chat");Intent intent = new Intent(this, AActivity.class);PendingIntent pendingIntent = PendingIntent.getActivity(this, 100, intent, PendingIntent.FLAG_CANCEL_CURRENT);Notification notify = builder.//Android8.0上面LargeIcon没有效果setLargeIcon(BitmapFactory.decodeResource(getResources(), R.drawable.ic_directions_railway)).setSmallIcon(R.drawable.ic_local_car).setTicker("通知来了Ticker").  //话说这个有上升动画setContentInfo("ContentInfo--通知文本").//这个在通知中显示不出来setContentText("ContentText--通知文本").setContentTitle("ContentTitle--通知文本").setContentIntent(pendingIntent).setColor(Color.YELLOW).//setVibrate(new long[]{2000, 2000, 2000, 2000}).//Android8.0不起作用//setLights(Color.parseColor("#0000FF"), 5, 5).//Android8.0不起作用build();notify.flags = Notification.FLAG_NO_CLEAR;//此标记为该同志将不会清楚notificationManager.notify(1, notify);}

1.3 模仿酷狗通知

代码分析

  /*** 酷狗通知栏---自定义通知栏*/private void kuGouNotification() {if (kuGouNotify == null) {NotificationCompat.Builder builder = new NotificationCompat.Builder(this, "music");kuGouContentView = new RemoteViews(getPackageName(), R.layout.notify_kugou_layout);Intent preIntent = new Intent();preIntent.setAction("com.kugou.action.pre");PendingIntent prePendingIntent = PendingIntent.getBroadcast(this, 100, preIntent, PendingIntent.FLAG_UPDATE_CURRENT);kuGouContentView.setOnClickPendingIntent(R.id.iv_previous, prePendingIntent);Intent nextIntent = new Intent();nextIntent.setAction("com.kugou.action.next");PendingIntent nextPendingIntent = PendingIntent.getBroadcast(this, 200, nextIntent, PendingIntent.FLAG_UPDATE_CURRENT);kuGouContentView.setOnClickPendingIntent(R.id.iv_next, nextPendingIntent);Intent closeIntent = new Intent();closeIntent.setAction("com.kugou.action.close");PendingIntent closePendingIntent = PendingIntent.getBroadcast(this, 300, closeIntent, PendingIntent.FLAG_UPDATE_CURRENT);kuGouContentView.setOnClickPendingIntent(R.id.iv_close, closePendingIntent);Intent intent = new Intent(this, BActivity.class);PendingIntent pendingIntent = PendingIntent.getActivity(this, 100, intent, PendingIntent.FLAG_CANCEL_CURRENT);kuGouNotify = builder.setLargeIcon(BitmapFactory.decodeResource(getResources(), R.drawable.ic_music)).setSmallIcon(R.drawable.ic_music).setOngoing(true).//设置当前通知栏是否不间断的运行,添加这个之后生成的自定义布局的通知才生效setOnlyAlertOnce(true).setCustomContentView(kuGouContentView).setCustomBigContentView(kuGouContentView). //设置折叠的通知栏setContentIntent(pendingIntent).//悬挂式通知栏，适配乐视上面的折叠通知栏显示不出来setFullScreenIntent(null, true).build();}if (simpleTarget == null) {simpleTarget = new SimpleTarget<Bitmap>() {@Overridepublic void onResourceReady(@NonNull Bitmap resource, @Nullable Transition<? super Bitmap> transition) {kuGouContentView.setImageViewBitmap(R.id.iv_music, resource);notificationManager.notify(2, kuGouNotify);  //放到此处进行发出通知，使得图片加载成功之后弹出通知}};}Glide.with(this).asBitmap().load(Uri.parse(musicPictures[currentIndex])).into(simpleTarget);
//        notify.bigContentView = contentView;   //该方法在API28已经过时}private class KuGouBroadCastReceiver extends BroadcastReceiver {@Overridepublic void onReceive(Context context, Intent intent) {String intentAction = intent.getAction();Log.e("intentAction", intentAction);if ("com.kugou.action.pre".equals(intentAction)) {currentIndex = currentIndex == 0 ? 4 : currentIndex - 1;} else if ("com.kugou.action.next".equals(intentAction)) {currentIndex = currentIndex == 4 ? 0 : currentIndex + 1;} else if ("com.kugou.action.close".equals(intentAction)) {notificationManager.cancel(2);return;}kuGouNotification();}}

1.4 通知栏自定义进度条

代码分析

    private int currentProgress = 1;private NotificationCompat.Builder notifyBuilder = null;  //Builderprivate Notification notifyDefine = null;/*** 通知栏自带进度条*/private void notifyDefineProgress() {if (notifyBuilder == null) {notifyBuilder = new NotificationCompat.Builder(this, "progress");Intent intent = new Intent(this, CActivity.class);PendingIntent pendingIntent = PendingIntent.getActivity(this, 100, intent, PendingIntent.FLAG_CANCEL_CURRENT);notifyDefine = notifyBuilder.setSmallIcon(R.drawable.ic_file_download).setTicker("通知来了Ticker").  //话说这个有上升动画setContentText("ContentText--通知文本").setContentTitle("ContentTitle--通知文本").setContentIntent(pendingIntent).//第三个参数为true时代表是间断的进度条，为false的时候就是正常进度条setProgress(100, currentProgress, false).build();notifyDefine.flags = Notification.FLAG_NO_CLEAR;}notifyDefine = notifyBuilder.setProgress(100, currentProgress, false).build();notificationManager.notify(3, notifyDefine);handler.sendEmptyMessageDelayed(1, 1000);}

1.5 模仿UC通知栏下载进度条

代码分析

private boolean isDownload = true;private Notification ucNotification = null;private RemoteViews ucContentView = null;private int ucCurrentProgress = 1;private int ucCurrentSecondProgress = 5;private void ucDownloadProgress() {if (ucNotification == null) {NotificationCompat.Builder builder = new NotificationCompat.Builder(this, "music");ucContentView = new RemoteViews(getPackageName(), R.layout.notify_uc_layout);ucContentView.setImageViewResource(R.id.iv_pause_play, isDownload ? R.drawable.ic_pause_circle : R.drawable.ic_play_circle);//给ProgressBar设置进度ucContentView.setProgressBar(R.id.pb, 100, ucCurrentProgress, false);//更新ProgressBar第二层进度条ucContentView.setInt(R.id.pb, "setSecondaryProgress", ucCurrentSecondProgress);Intent preIntent = new Intent();preIntent.setAction("com.uc.action.pause.play");PendingIntent prePendingIntent = PendingIntent.getBroadcast(this, 100, preIntent, PendingIntent.FLAG_UPDATE_CURRENT);ucContentView.setOnClickPendingIntent(R.id.iv_pause_play, prePendingIntent);Intent intent = new Intent(this, BActivity.class);PendingIntent pendingIntent = PendingIntent.getActivity(this, 100, intent, PendingIntent.FLAG_CANCEL_CURRENT);ucNotification = builder.setSmallIcon(R.drawable.ic_toys_black).setOngoing(true).//设置当前通知栏是否不间断的运行,添加这个之后生成的自定义布局的通知才生效setCustomBigContentView(ucContentView). //设置折叠的通知栏setContentIntent(pendingIntent).build();}ucContentView.setImageViewResource(R.id.iv_pause_play, isDownload ? R.drawable.ic_pause_circle : R.drawable.ic_play_circle);ucContentView.setProgressBar(R.id.pb, 100, ucCurrentProgress, false);ucContentView.setInt(R.id.pb, "setSecondaryProgress", ucCurrentSecondProgress);if (isDownload) {ucContentView.setImageViewResource(R.id.iv_icon, R.drawable.uc_rotate);handler.sendEmptyMessageDelayed(2, 1000);} else { //false时给iv_icon设置不旋转，必须放在notify方法之前否则该图片设置将会不生效ucContentView.setImageViewResource(R.id.iv_icon, R.drawable.ic_toys_black);}notificationManager.notify(4, ucNotification);  //放到此处进行发出通知，使得图片加载成功之后弹出通知}private class UCBroadCastReceiver extends BroadcastReceiver {@Overridepublic void onReceive(Context context, Intent intent) {String intentAction = intent.getAction();if ("com.uc.action.pause.play".equals(intentAction)) {isDownload = !isDownload;}if (ucCurrentProgress > 100) {ucCurrentProgress = 1;ucCurrentSecondProgress = 5;}if (!isDownload) {//false时给iv_icon设置不旋转ucContentView.setImageViewResource(R.id.iv_icon, R.drawable.ic_toys_black);handler.removeMessages(2);}ucDownloadProgress();}}

三、开发遇到的错误

3.1 Binary XML file line #54: Class not allowed to be inflated android.view.View

解决办法：
Remove the 'View' you are using as a shadow in your layout(or Replace View with TextView) and it works fine. XML used for Remoteview should make use of Views which has @android.widget.RemoteViews.RemoteView annotation. Since a plain View does not has this annotation, you cannot use that in your xml.
意思就是在自定义通知栏时，通知栏的自定义布局中不能使用控件TextView

四、推荐文章

设置Android通知栏Notification的字体/图标颜色随背景色变化而变化

源码地址