android - 获取堆栈 Android 中最上面运行的 Activity 的标签名称

Question

我正在使用下面的代码行来获取 Android 中运行最好的应用程序的包名

ActivityManager am = (ActivityManager) context.getSystemService(Activity.ACTIVITY_SERVICE);
String packageName = am.getRunningTasks(1).get(0).topActivity.getPackageName();

我想要的是堆栈中顶部运行的 Activity 的标签名称，比如如果 facebook 在顶部运行，我应该将 “facebook” 作为应用程序的标签名称

Answer 1

public String getTopActivityStackName()
    {
        ActivityManager mActivityManager = (ActivityManager)
                getSystemService(Activity.ACTIVITY_SERVICE);
        PackageManager mPackageManager = getPackageManager();
        String packageName = mActivityManager.getRunningTasks(1).get(0).topActivity.getPackageName();
        ApplicationInfo mApplicationInfo;
        try 
        {
            mApplicationInfo = mPackageManager.getApplicationInfo( packageName, 0);
        } catch (NameNotFoundException e) {
            mApplicationInfo = null;
        }
       String appName = (String) (mApplicationInfo != null ? 
               mPackageManager.getApplicationLabel(mApplicationInfo) : "(unknown)");

        return appName;
    }