android实现桌面icon未读信息图标（类似与iPhone的badge）

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_DEFAULT        if (info == null) {            info = packageManager.resolveActivity(intent, 0);        }        return info.activityInfo.name;    }}

下面是截图

原网址：https://github.com/ekinlyw/android-badge

希望大家学习的时候也能感谢原作者的辛苦劳动

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