Android反射获取进程名或用安卓新系统Application.getProcessName()

/**
 * 主进程名和同包进程名均能获取 等同API Level 28的Application.getProcessName()
 * Android通过反射获取进程名
 */
public static String getProcessName() {
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.P) {
        return Application.getProcessName();
    }

    //  低于API Level 28则用反射方式获取当前进程名：
    String processName = null;
    try {
        @SuppressLint("PrivateApi") final Method declaredMethod =
                Class.forName("android.app.ActivityThread", false, Application.class.getClassLoader())
                        .getDeclaredMethod("currentProcessName", (Class<?>[]) new Class[0]);
        declaredMethod.setAccessible(true);
        final Object invoke = declaredMethod.invoke(null, new Object[0]);
        if (invoke instanceof String) {
            processName = (String) invoke;
        }
    } catch (Throwable e) {
        System.err.println(e);
    }
    return processName;
}