Badge概述
所谓Badge,原本是IOS上的一个效果,指的是当手机接收到推送消息后,会在手机桌⾯面对应的App图标的右上角显示一个未读消息数的提⽰。
而在Android系统中,手机桌面的管理是在系统应用Launcher上实现的,然而在原生的Android系统中,Launcher是不提供改功能效果的。但是,由于Android的AOSP(Android开放源码项目)代码能够被各大ROM厂商修改,所以很多被修改的ROM都可以支持这种Badge效果。
基本原理
都是监听App发出的广播,然后根据广播内容进行Launcher层面的快捷方式的修改。
难点
由于没有Android原生系统的支持,所以ROM厂商的实现方式很不统一,基本都是自己做自己的。因此,关键是要找到这些Launcher修改的广播(厂家提供的私有API)。
不同厂商API
三星
String launcherClassName = getLauncherClassName(context); if (launcherClassName == null) { return; } Intent intent = new Intent("android.intent.action.BADGE_COUNT_UPDATE"); intent.putExtra("badge_count", count); intent.putExtra("badge_count_package_name", context.getPackageName()); intent.putExtra("badge_count_class_name", launcherClassName); context.sendBroadcast(intent);
华为
String launcherClassName = getLauncherClassName(context); if (launcherClassName != null) { Bundle extra = new Bundle(); extra.putString("package", ct.getPackageName()); extra.putString("class", launcherClassName); extra.putInt("badgenumber", count); context.getContentResolver().call(Uri.parse("content://com.huawei.android.launcher.settings/badge/"), "change_badge", null, extra); }
MIUI
- MIUI6以下
Intent intent = new Intent("android.intent.action.APPLICATION_MESSAGE_UPDATE"); intent.putExtra("android.intent.action.APPLICATION_MESSAGE_UPDATE","your app packageName/.LAUNCHER ActivityName"); intent.putExtra(EXTRA_UPDATE_APPLICATION_MESSAGE_TEXT, unreadCount); context.sendBroadcast(intent);
- MIUI6以上
NotificationCompat.Builder builder = new NotificationCompat.Builder(context) .setSmallIcon(R.mipmap.ic_launcher) .setContentTitle("小米角标") .setContentText("miui桌面角标消息"); NotificationManagerCompat managerCompat = NotificationManagerCompat.from(context); Notification notification = builder.build(); try { Object miuiNotification = Class.forName("android.app.MiuiNotification").newInstance(); Field field = miuiNotification.getClass().getDeclaredField("messageCount"); field.setAccessible(true); field.set(miuiNotification, Integer.valueOf(count)); notification.getClass().getField("extraNotification").set(notification, miuiNotification); managerCompat.notify(0, notification); } catch (Exception e) { e.printStackTrace(); }
Sony
Intent intent = new Intent(); String launcherclassname = getLauncherClassName(context); if (launcherclassname != null) { intent.putExtra("com.sonyericsson.home.intent.extra.badge.SHOW_MESSAGE", unReadCount > 0); intent.setAction("com.sonyericsson.home.action.UPDATE_BADGE"); intent.putExtra("com.sonyericsson.home.intent.extra.badge.ACTIVITY_NAME", launcherclassname); intent.putExtra("com.sonyericsson.home.intent.extra.badge.MESSAGE", unReadCount < 1 ? "" : unReadCount); intent.putExtra("com.sonyericsson.home.intent.extra.badge.PACKAGE_NAME", context.getPackageName()); context.sendBroadcast(intent); }
VIVO
String launcherclassname = getLauncherClassName(context); if (launcherclassname != null) { Intent intent = new Intent("launcher.action.CHANGE_APPLICATION_NOTIFICATION_NUM"); //Constants.KEY_PKG_NAME = "packageName" //Constants.KEY_CLASS_NAME = "className" intent.putExtra(Constants.KEY_PKG_NAME, context.getPackageName()); intent.putExtra(Constants.KEY_CLASS_NAME, launcherclassname); intent.putExtra("notificationNum", unReadCount); context.sendBroadcast(intent); }
OPPO
try { Bundle extras = new Bundle(); extras.putInt("app_badge_count", count); context.getContentResolver().call(Uri.parse("content://com.android.badge/badge"), "setAppBadgeCount", String.valueOf(count), extras); } catch (Throwable th) {}
Method: getLauncherClassName
public static String getLauncherClassName(Context context) {
if(context == null){
return null;
}
PackageManager pm = context.getPackageManager();
Intent intent = new Intent("android.intent.action.MAIN");
intent.addCategory("android.intent.category.LAUNCHER");
try {
for (ResolveInfo resolveInfo : pm.queryIntentActivities(intent, 0)) {
if (resolveInfo.activityInfo.applicationInfo.packageName.equalsIgnoreCase(context.getPackageName())) {
return resolveInfo.activityInfo.name;
}
}
return null;
} catch (Exception e) {
return null;
}
}
除了上述的代码,还需要在清单文件声明对应的权限
<uses-permission android:name="com.sonyericsson.home.permission.BROADCAST_BADGE"/>
<uses-permission android:name="com.sec.android.provider.badge.permission.READ"/>
<uses-permission android:name="com.sec.android.provider.badge.permission.WRITE"/>
<uses-permission android:name="com.huawei.android.launcher.permission.CHANGE_BADGE"/>
Good Luck !