[Android] : Print Activity Flags, it will be useful for the debug.

printActivityFlags.java

  public static void printActivityFlags(String activityName, Intent intent) {
    Field[] declaredFields = Intent.class.getDeclaredFields();
    StringBuilder stringBuilder = new StringBuilder(activityName + " => ");
    for (Field field : declaredFields) {
      if (field.getName().startsWith("FLAG_")) { // Fetch all the flag names which start from "FLAG_"
        try {
          int flag = field.getInt(null);
          if ((intent.getFlags() | flag) == intent.getFlags()) { // checking that flag is present or not.
            stringBuilder.append(field.getName());
            stringBuilder.append("|");
          }
        } catch (Exception e) {
          e.printStackTrace();
        }
      }
    }
    Log.d("Flags are  : " + stringBuilder.toString());
  }

Thanks, here is my suggestion on converting the code to kotlin:

fun Intent.flags(): String =
    Intent::class.java.declaredFields.filter { it.name.startsWith("FLAG_") }.mapNotNull {
        try {
            if (hasFlag(it)) {
                it.name
            } else {
                null
            }
        } catch (e: Exception) {
            null
        }
    }.joinToString()

private fun Intent.hasFlag(field: Field) =
    field.getInt(null).let { flag -> flag or flags == flags }

@Eightyplus

flag -> flag or flags == flag is wrong, it should be flag -> flag or flags == flags

@cdongieux Thanks 👍