Android(安卓)Notification通知栏的必备姿势
16lz
2021-12-04
android开发,可能经常使用到通知管理者,在手机顶部显示通知。封装一些常用的方法,可以减少代码冗余。通常情况下,显示下载进度,播放器通知栏操作,显示APP状态信息,发送友情提示等,都需要用到Notification。
一,直接贴代码,直观了解通知栏。
/** * Created by duqian on 16/01/23. * Android通知栏封装 */public class NotificationUtils { private static final int SmallIcon = R.drawable.ic_launcher; public static final int NotificationNumber = 1; private static NotificationManager mManager; private static NotificationCompat.Builder mBuilder; private static final Random RANDOM = new Random(); /** * 获取Builder */ public static NotificationCompat.Builder getBuilder(Context context) { mBuilder = new NotificationCompat.Builder(context); mBuilder.setNumber(NotificationNumber) .setWhen(System.currentTimeMillis()) .setPriority(Notification.PRIORITY_DEFAULT) .setAutoCancel(true); //.setDefaults(Notification.DEFAULT_VIBRATE); return mBuilder; } /** * 获取NotificationManager */ public static NotificationManager getManager(Context context) { if (mManager == null) { synchronized (NotificationUtils.class) { if (mManager == null) { mManager = (NotificationManager) context.getSystemService(context.NOTIFICATION_SERVICE); } } } return mManager; } /** * 显示普通的通知 */ public static void showOrdinaryNotification(Context context, String title, String text, String ticker, int icon, int channel) { mBuilder = getBuilder(context); mManager = getManager(context); mBuilder.setContentTitle(title) .setContentText(text) .setContentIntent(getDefalutIntent(context, Notification.FLAG_AUTO_CANCEL)) .setNumber(NotificationNumber)//显示数量 .setTicker(ticker)//通知首次出现在通知栏,带上升动画效果的,可设置文字,图标 .setWhen(System.currentTimeMillis())//通知产生的时间 .setPriority(Notification.PRIORITY_DEFAULT)//设置该通知优先级 .setAutoCancel(true)//设置让通知将自动取消 .setOngoing(false)//ture,设置他为一个正在进行的通知。如一个文件下载,网络连接。 .setDefaults(Notification.DEFAULT_SOUND)//向通知添加声音、闪灯和振动效果。最简单、最一致的方式是使用当前的用户默认设置,使用defaults属性,可以组合: //Notification.DEFAULT_ALL Notification.DEFAULT_SOUND 添加声音 //DEFAULT_VIBRATE requires VIBRATE permission .setSmallIcon(SmallIcon) ; Notification mNotification = mBuilder.build(); mNotification.icon = icon; mManager.notify(dealWithId(channel), mNotification); } //获取默认的延期意图 public static PendingIntent getDefalutIntent(Context context, int flags) { PendingIntent pendingIntent = PendingIntent.getActivity(context, 1, new Intent(), flags); return pendingIntent; } //通知channel ID,唯一标示一个通知 public static int dealWithId(int channel) { return channel >= 1 && channel <= 100 ? channel : RANDOM.nextInt(Integer.MAX_VALUE - 100) + 101; } //获取系统SDK版本 public static int getSystemVersion() { int version = android.os.Build.VERSION.SDK_INT; return version; } /** * 清除所有的通知 * @param context */ public static void clearAllNotifification(Context context) { mManager = getManager(context); mManager.cancelAll(); } /** * 清除通知 */ public static void clearNotifificationById(Context context, int channel){ mManager = getManager(context); mManager.cancel(dealWithId(channel)); } private static int iconId = 0; public void setIconId(int iconId){ this.iconId=iconId; } /** * 默认图标 */ private static int getPushIconId(Context context) { if(iconId==0) { iconId = context.getApplicationInfo().icon; } if (iconId < 0) { iconId = android.R.drawable.sym_def_app_icon; } return iconId; } //去通知文本的前15位字符 private static String getSubStringTitle(String desc) { if (desc != null && !"".equals(desc) && desc.length() > 15) { return desc.substring(0, 15); } else { return desc; } } }/** * 显示进度的通知栏 */ public static void showProgressNotification(Context context, String title, String text, String ticker, Intent resultIntent, boolean indeterminate, int progress, int icon, int channel) { mBuilder = getBuilder(context); mManager = getManager(context); PendingIntent pendingIntent = PendingIntent.getActivity(context, RequestCode, resultIntent, PendingIntent.FLAG_UPDATE_CURRENT); mBuilder.setContentTitle(ticker)//ticker,title .setContentText(text) .setTicker(ticker) .setSmallIcon(SmallIcon) .setContentIntent(pendingIntent); if (indeterminate) { //不确定进度的 设置为true就是不确定的那种进度条效果 mBuilder.setProgress(0, 0, true).setOngoing(false).setAutoCancel(true); } else { //确定进度的 mBuilder.setProgress(100, progress, false).setOngoing(true); } Notification progressNotification = mBuilder.build(); progressNotification.icon = icon; mManager.notify(dealWithId(channel), progressNotification); } /** * 带意图的通知栏:Intent 中可以包含很多参数、功能 * 应用场景:页面启动、跳转、安装apk */ public static void showIntentNotification(Context context, String title, String text, String ticker, Intent resultIntent, int icon, int channel,int defaults) { mBuilder = getBuilder(context); mManager = getManager(context); PendingIntent pendingIntent = PendingIntent.getActivity(context, RequestCode, resultIntent, PendingIntent.FLAG_UPDATE_CURRENT); mBuilder.setContentTitle(title) .setContentText(text) .setTicker(ticker) .setSmallIcon(SmallIcon) .setContentIntent(pendingIntent); if (defaults>0){ mBuilder.setDefaults(Notification.DEFAULT_SOUND); } Notification mNotification = mBuilder.build(); mNotification.icon = icon; mManager.notify(dealWithId(channel), mNotification); }
二,如何调用呢?
//提示存储空间不足,跳转到某个页面 private void notifyNotEnoughSpace(Context context) { String title = context.getString(R.string.error_sdcard_storage_full); String text = context.getString(R.string.buy_oair_device); String ticker = title; Intent resultIntent = new Intent(context,SimpleWebActivity.class); resultIntent.putExtra(MyConstant.intent_plugin_url,OairApi.oair_buy_product); resultIntent.putExtra(MyConstant.intent_plugin_name, context.getString(R.string.webview_oair_title)); resultIntent.setFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP); NotificationUtils.showIntentNotification(context, title,text, ticker, resultIntent, R.drawable.ic_launcher, channel_download_ocloud,Notification.DEFAULT_ALL);//Notification.DEFAULT_SOUND //NotificationUtils.showOrdinaryNotification(context, title,text, ticker,R.drawable.logo_statusbar,channel_download_ocloud); //ToastUtils.showCenterToast(context,title+","+text); }
三,自定义通知View
以上通知栏,图标,位置随手机系统规格来。我们也可以自定义通知栏的布局。通过引入xml中定义好的布局,然后更新通知栏的UI。
//显示应用有更新的通知,显示下载进度,下载完成点击后可以安装或其他操作 private void showNotifycation(Context context) { String title = context.getString(R.string.notify_download_apk); String text = context.getString(R.string.notify_click_apk_download); String ticker = title; Notification n = new Notification(R.drawable.ic_launcher,ticker, System.currentTimeMillis()); Intent clickIntent = new Intent(); clickIntent.setAction(BroadcastUtils.ACTION_NOTIFICATION); clickIntent.putExtra(BroadcastUtils.CATEGORY,BroadcastUtils.category_apk_download_install); PendingIntent pendingIntent = PendingIntent.getBroadcast(context, 0, clickIntent, PendingIntent.FLAG_UPDATE_CURRENT); n.setLatestEventInfo(context, title, text, pendingIntent); n.flags |= Notification.FLAG_AUTO_CANCEL; //点击一次后自动消除 final int hours = new Date().getHours(); LogUtils.debug(TAG,"hours="+hours); if (hours>=8&&hours<=24) { n.defaults = Notification.DEFAULT_ALL; } NotificationManager nm = (NotificationManager)context.getSystemService(Context.NOTIFICATION_SERVICE); nm.notify(channel_download_apk, n); }
通过代码可以看出,Notification的使用姿势还是比较简单的,而且通用,暂时没有兼容性问题。我自己用的挺好,是否优雅,自己验证哈。
未完待续,Dusan,Q291902259,欢迎交流。
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