给大家分享一个实现android系统上实现桌面icon未读信息气泡效果。类似于iPhone的badge。是从github上找到的源代码。从原文上来看目前只支持samsung和LG，三星亲测有效。
import android.content.Context;import android.content.Intent;import android.content.pm.PackageManager;import android.content.pm.ResolveInfo;//BadgeUtil provides static utility methods to set "badge count" on Launcher (by Samsung, LG). //Currently, it's working from Android 4.0. //But some devices, which are released from the manufacturers, are not working.public class BadgeUtil {private static final String TAG = "BadgeUtil";private static final String ACTION_BADGE_COUNT_UPDATE = "android.intent.action.BADGE_COUNT_UPDATE";private static final String EXTRA_BADGE_COUNT = "badge_count";private static final String EXTRA_BADGE_COUNT_PACKAGE_NAME = "badge_count_package_name";private static final String EXTRA_BADGE_COUNT_CLASS_NAME = "badge_count_class_name";public static int badgeCount = 0;/*** Set badge count* * @param context The context of the application package.* @param count Badge count to be set*/public static void setBadgeCount(Context context, int count) {Intent badgeIntent = new Intent(ACTION_BADGE_COUNT_UPDATE);badgeIntent.putExtra(EXTRA_BADGE_COUNT, badgeCount);badgeIntent.putExtra(EXTRA_BADGE_COUNT_PACKAGE_NAME, context.getPackageName());badgeIntent.putExtra(EXTRA_BADGE_COUNT_CLASS_NAME, getLauncherClassName(context));context.sendBroadcast(badgeIntent);}/*** Reset badge count. The badge count is set to "0"* * @param context The context of the application package.*/public static void resetBadgeCount(Context context) {badgeCount = 0;setBadgeCount(context, 0);}/*** Retrieve launcher activity name of the application from the context** @param context The context of the application package.* @return launcher activity name of this application. From the* "android:name" attribute.*/private static String getLauncherClassName(Context context) {PackageManager packageManager = context.getPackageManager();Intent intent = new Intent(Intent.ACTION_MAIN);// To limit the components this Intent will resolve to, by setting an// explicit package name.intent.setPackage(context.getPackageName());intent.addCategory(Intent.CATEGORY_LAUNCHER);// All Application must have 1 Activity at least.// Launcher activity must be found!ResolveInfo info = packageManager.resolveActivity(intent, PackageManager.MATCH_DEFAULT_ONLY);// get a ResolveInfo containing ACTION_MAIN, CATEGORY_LAUNCHER// if there is no Activity which has filtered by CATEGORY_DEFAULTif (info == null) {info = packageManager.resolveActivity(intent, 0);}return info.activityInfo.name;}}
下面是截图
原网址：/ekinlyw/android-badge
希望大家学习的时候也能感谢原作者的辛苦劳动
